Top 12 Best Coolant For Chrysler 300 You Can’t Miss!
Choosing the right coolant can be challenging, especially when you want to keep your Chrysler 300 running smoothly and prevent overheating or corrosion. The best coolant for Chrysler 300 is designed to maintain the engine’s temperature, protect vital components, and extend your vehicle’s lifespan.
It offers improved protection against rust and scale buildup while helping your engine operate efficiently under various conditions. In this review, we will explore some of the leading coolants available for the Chrysler
You will learn about their key features, compatibility, and benefits to help you make an informed choice for your vehicle’s maintenance needs.
Top Picks to Keep Your Chrysler 300 Running Smoothly
| Image | Product | Price |
|---|---|---|
Our Top Picks 1 ![]() | 603-380 Engine Coolant Reservoir Tank with Cap Compatible with Chrysler | Check Price |
Our Top Picks 2 ![]() | 603-380 Coolant Reservoir Tank for 2011-2023 Chrysler 300, for Dodge | Check Price |
Our Top Picks 3 ![]() | 603-380 Coolant Reservoir w/Cap for 11-21 Chrysler 300/ Challenger Charger | Check Price |
1. 603-380 Engine Coolant Reservoir Tank with Cap Compatible with Chrysler

Keep your Chrysler running cool and efficiently with the 603-380 Engine Coolant Reservoir Tank. Designed to fit a variety of Chrysler and Dodge models, this replacement tank offers durability and precise fitment.
Compatible with many Chrysler 300 and Dodge vehicles from 2011 to 2021, including V6 and V8 engines, this coolant reservoir tank ensures versatility across your fleet. Its construction from heat-resistant polypropylene material withstands high pressure, making it sturdy under demanding conditions.
Installation is straightforward, with exact OEM fitment for multiple part numbers, allowing a hassle-free replacement without modifications. Whether you drive a Dodge Charger RT, Scat Pack, or a Chrysler 300, this tank delivers reliable performance and helps prevent overheating.
The design caters to those seeking an effective, long-lasting coolant reservoir tank without frequent replacements. Its compatibility excludes certain newer Dodge Charger and Challenger models, so checking your vehicle’s fitment before ordering is advised.
Pros
- Universal fit for multiple Chrysler and Dodge models from 2011-2021
- Constructed from durable, heat-resistant polypropylene for long life
- Includes pressure cap and clear coolant level indicators for easy monitoring
Cons
- Not compatible with Dodge Challenger and Charger models from 2015 onwards with specific V8 engines
The 603-380 Engine Coolant Reservoir Tank combines durability and precise compatibility tailored to Chrysler and Dodge vehicles. It supports system reliability while making replacement straightforward for owners maintaining their car’s cooling efficiency. Below is a detailed specification overview for quick reference.
Below is a detailed specification overview for quick reference. The tank fits well within its intended model range and stands out by balancing quality with functional design.
| Specification | Details |
|---|---|
| Brand | LSHDLAM |
| Part Number | 23386455 |
| Compatible Models | Chrysler 300 (2011-2021), Dodge Challenger (2011-2021), Dodge Charger (2012-2021) |
| Material | Heat-resistant polypropylene (PP) |
| Pressure Resistance | Withstands 200,000 pressure cycles at 35 PSI, 100 PSI burst pressure |
| Includes | Coolant reservoir tank with pressure cap |
| Installation | Direct OEM replacement, no modifications required |
Personally, this reservoir tank strikes a fine balance between robustness and ease of installation. It’s particularly suitable for owners wanting a reliable part without unnecessary complications or upgrades.
Its compatibility and sturdy design make it a thoughtful investment to sustain your vehicle’s cooling system for years.
2. 603-380 Coolant Reservoir Tank for 2011-2023 Chrysler 300, for Dodge

Maintain your vehicle’s cooling system with confidence using the 603-380 Coolant Reservoir Tank. Designed specifically for Chrysler 300 models from 2011 to 2023, this reservoir tank delivers reliable performance that supports engine longevity. Its compatibility extends to select Dodge Challengers and Chargers, ensuring versatile application.
Constructed with durability in mind, the coolant reservoir tank effectively manages engine temperature to prevent overheating. It’s engineered to withstand pressure variations and extreme temperature changes, providing steady operation in varying conditions. An ideal replacement part, it ensures smooth vehicle performance and reduces the risk of engine stall caused by coolant issues.
The 603-380 Coolant Reservoir Tank replaces multiple OEM part numbers, guaranteeing a precise fit for your vehicle’s cooling system. Installation is straightforward, allowing quick maintenance without needing extensive mechanical experience. Made from premium materials, it withstands wear and tear, contributing to the system’s durability and reliability.
Made from premium materials, it withstands wear and tear, contributing to the system’s durability and reliability. This reservoir tank balances functionality with robust design, making it an excellent choice for those prioritizing dependable cooling system parts.
It suits drivers seeking a long-lasting replacement that maintains the engine’s temperature across varied driving conditions. The inclusion of a dependable cap seals in coolant efficiently, minimizing fluid loss. Its resistance to heat and pressure variations helps prevent premature damage, offering peace of mind during daily commutes or longer trips.
Its resistance to heat and pressure variations helps prevent premature damage, offering peace of mind during daily commutes or longer trips. Maintenance becomes easier with this ready-to-install component, enhancing overall vehicle care.
Pros
- Fits multiple Chrysler 300, Dodge Challenger, and Charger models accurately
- Durable build resists heat and pressure changes effectively
- Simple installation designed for hassle-free replacement
Cons
- Limited to specific engine sizes: 3.6L, 5.7L, and 6.4L only
The 603-380 Coolant Reservoir Tank stands out by offering a sturdy, compatible, and efficient cooling system component. Its durability and precise fit make it a smart choice for improving vehicle reliability. Below is a specification overview for quick reference.
| Feature | Details |
|---|---|
| Brand Name | APIKOZI |
| Manufacturer Part Number | 603-380 |
| OEM Part Numbers Replaced | 603-380, 4596198, 5086226AA, 55111260AB, 55111260AC, 55111260AD, 55111260AE, 55111260AF, 55116897AA |
| Compatibility | 2011-2023 Chrysler 300, Dodge Challenger, Dodge Charger 3.6L, 5.7L, 6.4L engines |
| Included Components | Coolant reservoir tank with cap |
| Unit Count | 1 |
This coolant reservoir tank is a practical upgrade that balances quality and ease of use. It helps ensure vehicle cooling systems remain functional under stress, offering protection against overheating.
3. 603-380 Coolant Reservoir w/Cap for 11-21 Chrysler 300/ Challenger Charger

Maintaining your Chrysler or Dodge’s engine cooling system is easier with the 603-380 Coolant Reservoir w/Cap. Designed specifically for 2011-2021 Chrysler 300, Dodge Challenger, and Charger models, it ensures reliable coolant storage and pressure regulation. This reservoir supports efficient heat dissipation, keeping your engine running smoothly under various conditions.
This reservoir supports efficient heat dissipation, keeping your engine running smoothly under various conditions.
Crafted with durable materials, the coolant tank resists heat, impact, and corrosion over long-term use. Its transparent design makes monitoring coolant levels quick, helping to avoid overheating issues.
An ideal replacement part, it matches original equipment dimensions for a secure fit without modifications.
The 603-380 coolant reservoir offers impressive compatibility across multiple Chrysler and Dodge models with various engine sizes. It replaces OE part numbers 55111260AB and 55111260AF, maintaining OEM performance standards. The engineering focuses on seamless installation, so vehicle owners save time and effort during replacement.
The engineering focuses on seamless installation, so vehicle owners save time and effort during replacement.
High-strength materials give the tank remarkable thermal conductivity, aiding in effective heat dissipation. It adjusts coolant capacity dynamically while maintaining system pressure balance to separate water and steam efficiently. This helps stabilize engine operation and improve cooling effectiveness for safer driving.
Thanks to its transparent construction, checking coolant levels is straightforward. Users can quickly detect leaks or shortages, reducing the risk of engine damage.
Pros
- Fits various Chrysler 300, Dodge Challenger, and Charger models with exact OEM specifications
- High-temperature, corrosion, and impact-resistant materials for lasting durability
- Transparent design enables easy coolant level monitoring for timely maintenance
Cons
- May require verification of part number compatibility before purchase
The 603-380 Coolant Reservoir provides a reliable solution to maintain your vehicle’s cooling system integrity. Its robust design and precise fit make it a practical upgrade to your Chrysler or Dodge. The product manages coolant efficiently, helping safeguard engine performance under demanding conditions.
The product manages coolant efficiently, helping safeguard engine performance under demanding conditions.
| Specification | Details |
|---|---|
| Manufacturer | X4XZ |
| Brand | X4XZ |
| Model | 603-380 Coolant Overflow Reservoir Tank |
| Item Weight | 3.29 pounds |
| Package Dimensions | 14 x 13.95 x 9.35 inches |
| Item Model Number | 55111260AB |
| Manufacturer Part Number | 603-380 |
| Exterior | Machined |
This coolant reservoir stands out for balancing quality and practicality. It is a suitable choice for vehicle owners looking for a direct OEM replacement without compromising on durability.
4. A-Premium Engine Coolant Radiator Assembly Compatible with Dodge, Chrysler |

Experience reliable engine cooling performance with the A-Premium Engine Coolant Radiator Assembly, designed to fit a variety of Dodge and Chrysler models. This assembly offers precise compatibility and robust construction to support your vehicle’s cooling system efficiently.
Engineered for durability and ease of installation, the radiator assembly ensures your Chrysler 300 operates within safe temperature limits. It’s an essential upgrade or replacement part to maintain vehicle health and prevent overheating on the road.
Crafted for compatibility with Chrysler 300 models from 2009 to 2021, as well as multiple Dodge vehicles, this radiator assembly delivers consistent cooling performance. It accepts various engine types, including V6 and V8 configurations, making it a versatile solution for several trims. The assembly features a standard duty design with a single fan, ensuring efficient airflow while maintaining a streamlined build.
The core dimensions—24-1/8 inches in height, 18-9/16 inches in width, and 1 inch in thickness—are optimized for proper fitment and heat dissipation. Both the inlet and outlet have a 1-7/16 inch diameter, compatible with factory hoses for straightforward installation. Although the transmission oil cooler is excluded, the radiator excels in restoring your vehicle’s cooling reliability.
Although the transmission oil cooler is excluded, the radiator excels in restoring your vehicle’s cooling reliability.
Manufactured under stringent testing standards, this product supports stable engine temperatures, which prolongs engine life and keeps performance steady. Its robust materials resist wear and tolerate diverse driving conditions. Perfect for owners wanting a dependable, direct-fit replacement, this radiator assembly balances quality with practical design.
Perfect for owners wanting a dependable, direct-fit replacement, this radiator assembly balances quality with practical design. Installation is user-friendly for those with experience in automotive maintenance, making it a valuable addition to keep your Chrysler 300 running smoothly.
Pros
- Wide vehicle compatibility with various Chrysler and Dodge engines
- Durable construction tested for consistent cooling efficiency
- Direct fit with standard dimensions ensuring easy installation
Cons
- Does not include a transmission oil cooler
The A-Premium Engine Coolant Radiator Assembly represents a reliable replacement component that restores proper engine cooling to your vehicle. Offering a balance of quality, compatibility, and durability, it stands as a practical choice for Chrysler 300 owners and compatible Dodge models seeking dependable cooling system parts.
| Specification | Details |
|---|---|
| Transmission Oil Cooler Included | No |
| Core Height | 24-1/8 inch |
| Core Thickness | 1 inch |
| Core Width | 18-9/16 inch |
| Inlet Diameter | 1-7/16 inch |
| Outlet Diameter | 1-7/16 inch |
| Compatible Models | Chrysler 300 (2009-2021 V6 & V8 engines), Dodge Challenger & Charger (Various years & engines) |
| Weight | 11.38 pounds |
| Manufacturer Part Numbers | 5065240AG, 68050126AA, CH3010355, CH1225198, CU13157, 13157, 13298 |
This radiator assembly is an effective replacement offering rigorous fitment and operational standards. It stands out for its straightforward installation and reliable cooling support.
5. 603-056 Coolant Reservoir w/Cap for Select 2005-10 Chrysler Dodge Models

Designed for specific Chrysler and Dodge models, the 603-056 Coolant Reservoir offers a reliable solution to maintain your engine’s cooling system. Its precise fit and durable construction make it a trustworthy replacement part for vehicles from 2005 to
The reservoir tank handles excess coolant, helping prevent overheating and supporting steady engine temperatures. With compatibility across Chrysler 300, Dodge Magnum, Charger, and Challenger models, it’s a versatile choice within these series. Installation is straightforward, requiring no additional instructions, catering to both professional mechanics and hands-on owners alike.
Installation is straightforward, requiring no additional instructions, catering to both professional mechanics and hands-on owners alike.
Performance hinges on maintaining coolant flow and managing thermal expansion effectively. This reservoir tank offers durability through high-quality materials that resist wear and environmental stress.
Compared to generic alternatives, the 603-056 matches OE specifications and replaces multiple original part numbers, providing a seamless swap. Its robustness helps avoid frequent replacements, ensuring consistent cooling system support. Suitable for drivers seeking a dependable and straightforward replacement, this coolant reservoir keeps vehicle operation smooth and protected.
Suitable for drivers seeking a dependable and straightforward replacement, this coolant reservoir keeps vehicle operation smooth and protected.
Pros
- Direct compatibility with multiple Chrysler and Dodge models.
- Durable construction resists wear and prevents leaks.
- Includes cap for complete coolant overflow management.
Cons
- Instruction manual not included, requiring prior installation experience.
The 603-056 Coolant Reservoir offers a solid balance between quality and compatibility, making it a practical replacement for the specified Chrysler and Dodge vehicles. Its build quality helps maintain the vehicle’s cooling efficiency while reducing maintenance concerns. Below is a summary of key specifications to assist in your decision-making.
Below is a summary of key specifications to assist in your decision-making.
| Manufacturer | X4XZ |
|---|---|
| Brand | X4XZ |
| Model | 603-056 Coolant Overflow Reservoir Tank |
| Item Weight | 3.74 pounds |
| Package Dimensions | 14.3 x 11.8 x 9.8 inches |
| Item Model Number | 4596466AG |
| Exterior | Machined |
| Manufacturer Part Number | 603-056 |
For those maintaining select Chrysler or Dodge vehicles from 2005 to 2010, this reservoir tank provides a dependable option that meets original equipment standards. While lacking detailed instructions, simple installation and compatibility make it a worthwhile investment for vehicle upkeep.
6. Dorman 603-380 Front Pressurized Coolant Reservoir with Cap Compatible with

Upgrade your vehicle’s cooling system with the Dorman 603-380 Front Pressurized Coolant Reservoir. Designed to match the original fit, this component offers reliable performance and durability for long-lasting use.
The reservoir features a pressurized design that helps maintain proper coolant flow while resisting underhood heat and vibrations. Manufactured from quality materials, it withstands harsh engine conditions to support optimal motor efficiency.
Replacing a worn or damaged coolant reservoir is essential to prevent overheating and maintain engine health. The Dorman 603-380 delivers consistent performance comparable to OEM parts.
This model accommodates multiple OEM part numbers, enhancing its compatibility across different Chrysler models and trims.
The durable construction withstands vibrations from road conditions while resisting heat exposure. Its direct-fit design saves time during installation, eliminating adjustments or customizations. This reservoir suits drivers wanting a trustworthy and lasting solution for cooling system maintenance, especially those seeking a reliable replacement for factory equipment.
This reservoir suits drivers wanting a trustworthy and lasting solution for cooling system maintenance, especially those seeking a reliable replacement for factory equipment.
Compared to generic reservoirs, the Dorman 603-380 benefits from over a century of experience in aftermarket automotive parts. This background translates into better material quality and build precision, ensuring dependable function under demanding conditions. Its balance of durability, fit, and ease of installation offers excellent value as a coolant reservoir upgrade.
Pros
- Perfect fit with original equipment specifications
- Manufactured from heat and vibration resistant materials
- Includes a secure cap for pressurized cooling systems
Cons
- Compatibility limited to specific vehicle makes and models
The Dorman 603-380 Pressurized Coolant Reservoir stands out with its durable design and reliable compatibility. Its direct replacement design simplifies installation while maintaining consistent coolant management. Perfect for those maintaining or restoring their vehicle’s cooling system, this reservoir balances performance and build quality effectively.
| Specification | Details |
|---|---|
| Brand Name | Dorman |
| Manufacturer Part Number | 603-380 |
| Included Components | 1 Coolant Reservoir, 1 Cap |
| Part Type | Pressurized Coolant Reservoir |
| Model Number | 603-380 |
| Compatibility | Matches OEM part numbers including 4596198, 5086226AA, 55111260AB and more |
| UPC | 037495083973 |
Investing in a coolant reservoir like this one ensures a secure seal and proper pressure management within the engine’s cooling system. Its sturdy construction lends confidence in reliability over time. For drivers aiming for a seamless and durable replacement, this reservoir presents a solid choice without complexity or compromise.
For drivers aiming for a seamless and durable replacement, this reservoir presents a solid choice without complexity or compromise.
7. STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant – 64

Maintaining a Chrysler 300’s engine temperature is vital for smooth and efficient performance. The STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant offers a reliable solution designed to protect and enhance engine operation. Its advanced formula supports steady cooling and prevents overheating under various driving conditions.
Crafted with unique POAT technology, this coolant provides exceptional corrosion protection and extends service intervals. It’s ready to use right out of the container, making engine maintenance straightforward and efficient.
The STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant stands out with its proprietary PCT additives, helping engines maintain consistent temperatures for improved power output. This coolant supports up to 2+ years of service life, minimizing the need for frequent changes.
Its biodegradable propylene glycol base is compatible with all engine types, including high-performance gasoline and diesel models. The pre-mixed formula ensures hassle-free use, delivering year-round protection against both freeze and boilover conditions. This product maintains engine temperature protection up to 265°F and freezing down to -26°F, making it highly versatile.
Compatible with all coolant types, it can be used for topping off or as part of a complete flush and refill. Additionally, it helps seal small leaks and cracks, enhancing the cooling system’s overall integrity. Star BRITE’s longstanding reputation and American-made quality add confidence to every purchase.
Star BRITE’s longstanding reputation and American-made quality add confidence to every purchase. It suits vehicle owners who demand durable and effective engine cooling solutions.
Pros
- Extended service life with superior corrosion resistance
- Compatible with all engine types and coolant varieties
- Ready-to-use, offering freeze and boilover protection year-round
Cons
- Comes in a 0.5-gallon size, which might require purchasing multiple units for larger vehicles
For Chrysler 300 owners aiming to balance performance and engine longevity, the STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant delivers reliable cooling while reducing maintenance frequency. Its advanced formula and ease of use make it a standout choice against many conventional coolants.
| Specification | Details |
|---|---|
| Brand Name | STAR BRITE |
| Manufacturer Part Number | 033264 |
| Size | 0.5 Gallon (64 oz) |
| Base | Propylene Glycol (PG) |
| Temperature Protection | Boils at 265°F / Freezes at -26°F |
| Compatibility | All engine types and coolants |
| Weight | 4.5 pounds |
| Model Number | 33264 |
The combination of long-lasting protection and broad compatibility makes this coolant a practical choice. It keeps engines running cooler while protecting critical components, ultimately supporting vehicle durability. This coolant provides peace of mind for those seeking a trustworthy option within a synthetic formula.
This coolant provides peace of mind for those seeking a trustworthy option within a synthetic formula.
8. aluminum Coolant Overflow Tank Reservoir Compatible with 2011-2023 Chrysler 300

Enhance your Chrysler 300’s cooling system with an aluminum coolant overflow tank reservoir designed for durability and precision. This premium replacement part fits models from 2011 to 2023, promising reliable performance under demanding conditions.
Engineered for compatibility with select Chrysler and Dodge vehicles, it offers superior heat management and structural strength. Easy to install, it ensures your engine maintains optimal temperatures for efficient performance.
Crafted from high-quality aluminum alloy, this reservoir resists corrosion and heat damage better than conventional plastic tanks. It endures frequent temperature fluctuations, reducing the risk of cracks or deformation over time.
The robust construction supports long-lasting service even under under-hood vibrations.
The part matches OEM specifications for a direct fit, eliminating the need for modifications during installation. Visual coolant level markers allow for quick, hassle-free monitoring to maintain proper coolant levels.
The included reservoir cap helps regulate system pressure, supporting stable engine temperatures and coolant performance.
Designed for Chrysler 300 models with V6 6L and V8
Every unit undergoes leak and pressure testing to ensure part integrity.
This reservoir is ideal for vehicle owners seeking a durable, OEM-quality coolant tank that enhances engine reliability. It offers clear advantages over plastic alternatives, particularly where longevity and heat resistance are critical.
Pros
- Premium aluminum alloy resists corrosion and heat damage effectively
- Direct OEM fit simplifies installation with no modifications required
- Clear coolant level markers aid quick and easy fluid checks
Cons
- Incompatible with some newer Dodge Challenger and Charger V8 engines
The aluminum coolant overflow tank reservoir delivers dependable cooling system support for compatible Chrysler and Dodge models. Its sturdy construction and user-friendly design make it a practical upgrade over plastic reservoirs.
Consider this option for reliable engine temperature management that preserves overall vehicle health.
| Specification | Details |
|---|---|
| Manufacturer | LSHDLAM |
| Brand | LSHDLAM |
| Model Number | 23386455 |
| Item Weight | 5.59 pounds |
| Dimensions | 11.81 x 14.17 x 9.65 inches |
| OEM Part Numbers Replaced | 603-380, 4596198, 5086226AA, 55111260AB, 55111260AC, 55111260AD, 55111260AE, 55111260AF, 55116897AA |
| Compatible Vehicles | Chrysler 300 (2011-2021 V6 3.6L, V8 5.7L; 2012-2014 V8 6.4L) Dodge Challenger (2011-2021 V6 3.6L, V8 5.7L; 2011-2014 V8 6.4L) Dodge Charger (2011-2021 V6 3.6L, V8 5.7L; 2012-2014 V8 6.4L) |
From a practical standpoint, this reservoir stands out by combining durability with precise fitment. It is an excellent choice for those maintaining Chrysler 300 or certain Dodge models, offering peace of mind through sturdy construction and thoughtful design. Compared to typical plastic tanks, it shows clear benefits in heat resistance and longevity while remaining easy to install and monitor.
Compared to typical plastic tanks, it shows clear benefits in heat resistance and longevity while remaining easy to install and monitor.
9. Peak Auto Sep003 Sierra® Antifreeze/coolant, Gallon

Maintain your vehicle’s cooling system with Peak Auto Sep003 Sierra® Antifreeze/coolant, designed to deliver reliable and safe performance. This antifreeze uses a propylene glycol formula that reduces toxicity while effectively protecting engine components.
Its plastic gallon bottle offers convenient handling and storage for easy use.
Engineered without ethylene glycol, this antifreeze stands out by minimizing harmful effects while keeping your engine’s temperature regulated. It’s compatible with a range of vehicles and provides outstanding heat transfer and corrosion protection. The product’s balanced formula helps prevent rust and scale buildup, extending the engine’s life and improving overall cooling efficiency.
Ideal for both daily drivers and long-distance travelers, it offers peace of mind through consistent performance. Its durable packaging ensures spill-free pouring and storage, while the formulation supports longer service intervals compared to some conventional coolants.
Old World Automotive’s manufacturing expertise reflects in the product’s consistent quality and dependability for demanding environments.
Pros
- Less toxic propylene glycol formula for improved safety
- Effective corrosion and rust prevention for engine longevity
- Convenient plastic gallon bottle for easy pouring and storage
Cons
- Not specified for all vehicle makes; verify compatibility before use
Peak Auto Sep003 Sierra® Antifreeze/coolant offers a balanced blend of safety and performance for maintaining your vehicle’s cooling system. Its low toxicity and effective engine protection make it a practical choice for everyday use. Below is a summary of key specifications to help you assess its suitability for your needs.
| Specification | Details |
|---|---|
| Manufacturer | Old World Automotive |
| Brand | PEAK |
| Weight | 8.97 pounds |
| Dimensions | 8 x 4 x 12 inches |
| Model Number | SEP003 |
| Part Number | SEP003 |
In my view, this antifreeze is a smart option for those seeking a safer alternative to ethylene glycol-based products. Its effective engine cooling and protection make it valuable for Chrysler 300 owners and others looking for dependable coolant solutions. Just make sure to check compatibility before application.
Just make sure to check compatibility before application.
10. TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle | For

The TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle offers a reliable and durable replacement for your fuel system. Crafted to provide a perfect fit and seamless function, it supports optimal engine cooling, preventing overheating issues. Designed with precision, it delivers consistent performance for peace of mind on the road.
Designed with precision, it delivers consistent performance for peace of mind on the road.
Made by TRQ, a brand with over 25 years of expertise in manufacturing direct-fit replacement parts, this coolant reservoir combines high-quality materials with ease of installation. It is engineered to match original equipment manufacturer specifications, making it an excellent choice for maintaining your vehicle’s cooling system performance and durability.
Carefully designed to fit Chrysler 300 models, this coolant reservoir expansion tank features robust build quality to withstand heat and pressure. Its pre-assembled design allows for quick and hassle-free replacement, eliminating the need for any modifications. The product includes reference numbers CH3014154, 4596466AF, and 4596466AG for easy compatibility verification.
The reservoir supports efficient overflow management, ensuring the coolant system remains balanced during engine temperature fluctuations. This prevents potential damage caused by coolant loss or contamination.
TRQ also provides extensive DIY video resources for installation guidance, empowering users to confidently perform the replacement themselves.
Thanks to its direct fit and durable construction, this expansion tank provides excellent value for money. It suits vehicle owners looking for reliable, OEM-quality parts without compromising on ease of use or performance.
Ideal for those who want a trustworthy solution for maintaining their Chrysler 300 cooling system.
Pros
- Direct-fit replacement ensures perfect compatibility
- Durable construction resists heat and pressure over time
- Pre-assembled for fast and straightforward installation
Cons
- Limited to specific Chrysler 300 models, so careful fitment check required
Offering a dependable and easy-to-install solution, the TRQ Radiator Coolant Reservoir Expansion Tank helps maintain your vehicle’s cooling system efficiently. Its strong build and precise compatibility make it a practical choice for Chrysler 300 owners.
Below is a specification summary for quick reference.
| Specification | Details |
|---|---|
| Manufacturer | TRQ |
| Brand | TRQ |
| Model Number | TRQ ECA62484 Coolant Reservoir |
| Item Weight | 4.25 pounds |
| Dimensions | 12 x 17 x 10 inches |
| Manufacturer Part Number | ECA62484 |
| OEM Part Numbers | 4596466AF, 4596466AG |
| Exterior Finish | Machined |
Compared to similar coolant reservoirs, this option stands out due to TRQ’s extensive support and installation videos. It balances quality and ease of assembly well, suiting owners who prefer self-service repairs. For those maintaining Chrysler 300 vehicles, this product offers reliability without unnecessary complications.
11. Zerex G05 Phosphate Free 50/50 Ready-to-Use Antifreeze/Coolant, 1 GA (Pack

Experience reliable engine protection with Zerex G05 Phosphate Free 50/50 Ready-to-Use Antifreeze/Coolant. Designed to defend your vehicle against extreme temperatures, this coolant offers excellent freeze and boil-over resistance. Its innovative formula helps maintain your engine’s health through changing seasons.
Its innovative formula helps maintain your engine’s health through changing seasons.
Boasting a pre-mixed solution, the coolant is easy to apply and safeguards all cooling system metals including aluminum. Perfect for modern engines, it ensures longevity without causing damage to gaskets, hoses, or plastics.
Zerex G05 uses hybrid organic acid technology to effectively combat rust, scale, and corrosion inside the cooling system. This prevents buildup and leads to smoother engine performance over time.
The pre-mixed 50/50 yellow formula is ready for immediate use.
Protecting against freezing down to -34°F and boiling up to 265°F, it meets and exceeds industry standards for thermal stability. The careful balance of additives ensures no harm comes to engine components, including plastics and gaskets. It also contains a bittering agent for added safety.
It also contains a bittering agent for added safety.
Suitable for a broad range of vehicles, especially those requiring phosphate-free formulations, the coolant supports extended protection up to five years or 150,000 miles. Lab-tested and proven in real-world fleets, it reassures drivers through consistent, dependable performance. Its ease of use combined with durable protection offers significant value for vehicle owners focused on engine longevity.
Its ease of use combined with durable protection offers significant value for vehicle owners focused on engine longevity.
Pros
- Pre-mixed formula ready for immediate use, saving time and effort
- Advanced technology fights rust, scale, and corrosion across cooling system metals
- Protects engines from extreme freezing and boiling temperatures effectively
Cons
- Pack size may be too large for small vehicle maintenance needs
Dependable and scientifically formulated, Zerex G05 meets modern vehicle engine demands with proven efficiency and durability. Its comprehensive protection against corrosion and extreme temperatures makes it a solid choice. For users seeking a hassle-free, long-lasting coolant, this product offers an excellent solution.
For users seeking a hassle-free, long-lasting coolant, this product offers an excellent solution.
| Specification | Details |
|---|---|
| Brand Name | Valvoline |
| Type | Engine Coolant / Antifreeze |
| Fit | Universal |
| Unit Count | 2 Count |
| Formula | Hybrid Organic Acid Technology |
| Ready-To-Use Ratio | 50/50 with Deionized Water |
| Protection Range | -34°F Freeze to 265°F Boil |
| Compatibility | All Cooling System Metals Including Aluminum |
This coolant stands out for its blend of protection and convenience. From preventing corrosion to withstanding temperature extremes, it helps maintain engine reliability. For drivers aiming for consistent cooling system care, it offers a trusted, efficient choice backed by strong formulation and testing.
For drivers aiming for consistent cooling system care, it offers a trusted, efficient choice backed by strong formulation and testing.
12. Upgraded Front Pressurized Coolant Reservoir for Dodge Challenger 3.5L 5.7L

Upgrade your vehicle’s cooling system with the Front Pressurized Coolant Reservoir designed for Dodge Challenger and Chrysler 300 models. Crafted to meet original equipment specifications, it ensures reliable performance and protects your engine from overheating.
Designed to fit various engine sizes and models from 2005 to 2010, this reservoir offers durability and efficiency in one package. Its pressurized design enhances the cooling system’s functionality, securing your vehicle’s health on the road.
The upgraded pressurized coolant reservoir is engineered from high-quality plastic that resists corrosion and extends durability. It measures 5 inches in length and
5 inches in height, suited perfectly for specific Dodge Challenger, Charger, Magnum, and Chrysler 300 engines. Installation is straightforward, allowing for direct replacement without modifications.
The reservoir’s spring-loaded twist cap operates at a maximum pressure of 15 PSI, helping maintain optimal system pressurization. This feature reduces the risk of overheating by decreasing cavitation and facilitating the removal of air from the cooling system.
Designed for those wanting to maintain or restore their vehicle’s cooling efficiency, it supports engines ranging from 7L to
1L. Its durable construction and precise fit ensure long-term reliability, making it a practical upgrade or replacement choice to help keep your car running smoothly.
Pros
- Manufactured with corrosion-resistant, high-quality plastic for longevity
- Direct fit for multiple Dodge and Chrysler models ensuring hassle-free installation
- Pressurized cap design enhances cooling system efficiency and reduces overheating risk
Cons
- Limited to specific model years and engine sizes, not universally compatible
This pressurized coolant reservoir stands out as a durable and effective solution for maintaining engine cooling. It offers convenience through direct installation and contributes to the longevity of engine components.
| Specification | Details |
|---|---|
| Brand Name | Yezoauto |
| Part Number | 4596466AF, 4596466AG |
| Dimensions | 14.5″ length x 10.5″ height |
| Cap Type | Spring-loaded twist |
| Maximum Pressure | 15 PSI |
| Compatibility | Dodge Challenger 2008-2010, Charger 2006-2010, Magnum 2005-2008, Chrysler 300 2005-2010 |
| Material | High-quality corrosion-resistant plastic |
| Pressurized | Yes |
From personal observation, this coolant reservoir provides a straightforward replacement with quality materials designed for durability. Those maintaining older Dodge or Chrysler vehicles will find its direct-fit installation and pressure management especially valuable, ensuring the cooling system operates efficiently without hassle.
Top Coolants for Chrysler 300: Buying Guide 2024
Key features to look for
Choosing the right coolant for a Chrysler 300 involves understanding how well it protects the engine from corrosion, which helps maintain the radiator and cooling system components over time. A good coolant also needs to provide effective freeze and boilover protection, preventing the engine from overheating during hot weather and freezing during cold seasons.
Considering the longevity and maintenance intervals is beneficial since some coolants require less frequent changes, saving time and money in the long run. Keep in mind that using a coolant compatible with the vehicle’s specifications supports optimal engine performance and durability while reducing the risk of costly repairs. When buying, check for coolants that mention compatibility with Chrysler models and have positive reviews about their protective properties and extended service life.
Environmental and safety factors
When choosing the best coolant for Chrysler 300, paying attention to environmental and safety factors can make a significant difference. Opting for nontoxic and environmentally friendly options helps protect both your vehicle and the planet, reducing harmful impacts if leaks or spills occur.
Some modern coolants include antifreeze sweeteners designed to discourage pets from licking or ingesting the fluid, adding an extra layer of safety around animals. Proper disposal methods are equally important to prevent contamination of soil and water sources; used coolant should be taken to designated recycling centers or hazardous waste facilities rather than being poured down drains or onto the ground. Selecting a coolant that balances performance with environmental responsibility ensures a safer driving experience for you, your loved ones, and the ecosystem surrounding you.
Understanding chrysler 300 coolant requirements
Choosing the right coolant for a Chrysler 300 involves paying close attention to the types recommended by the manufacturer to avoid any potential damage to the engine. Automakers design their coolants to meet specific chemical compositions that work harmoniously with the materials found in the engine, such as aluminum or steel components. Sticking to these OEM specifications helps maintain the cooling efficiency and extends the lifespan of the vehicle’s cooling system.
Sticking to these OEM specifications helps maintain the cooling efficiency and extends the lifespan of the vehicle’s cooling system. When selecting a coolant, compatibility with the engine materials is crucial because incompatible coolants can cause corrosion or reduce heat transfer capabilities. Typically, coolants designed for Chrysler 300 models are formulated with additives that protect sensitive components and prevent scaling or rust buildup over time.
Understanding how these factors align with the intended use of the vehicle, whether for daily commuting or longer drives, can guide buyers to a product that keeps the engine running smoothly under various conditions. Observing the maintenance schedule for coolant changes further supports optimal performance and helps avoid costly repairs linked to overheating or coolant degradation.
Compatibility and mixing considerations
Avoiding mixing different coolant types plays a significant role in maintaining the health of your Chrysler 300’s engine. Coolants often come in various chemical formulations, such as inorganic additive technology (IAT), organic acid technology (OAT), or hybrid organic acid technology (HOAT). Combining these can lead to chemical reactions that reduce their effectiveness and may cause corrosion or deposits inside the cooling system.
When choosing between premixed and concentrate coolants, premixed options provide convenience as they are ready to use without requiring dilution, which minimizes the risk of incorrect mixing ratios. Concentrate coolants, on the other hand, allow flexibility to mix with distilled water at the correct ratio, which can be beneficial for adjusting freeze protection based on climate.
Observing color coding also helps distinguish coolant types, but color alone should not be the sole factor; checking the chemical composition and manufacturer specifications ensures compatibility with your Chrysler 300’s engine requirements. Proper attention to these aspects contributes to better cooling system performance and prolongs engine life.
Types of coolants available
When selecting a coolant for a Chrysler 300, understanding the available types can help make the choice easier and more effective. Inorganic Additive Technology coolants are traditional and typically contain silicates and phosphates to protect metal parts from corrosion, making them suitable for older vehicles or those with conventional engines. Organic Acid Technology coolants are known for lasting longer without the need for frequent changes, as they use organic acids to inhibit corrosion; these are often recommended for newer engines due to their chemical composition.
Hybrid Organic Acid Technology coolants combine elements from both IAT and OAT coolants, providing balanced protection and compatibility with various metals found in modern engines. Considering the intended use and the vehicle’s age can guide the decision, as well as checking the manufacturer’s recommendations for coolant type and replacement intervals.
Paying attention to color coding and chemical compatibility avoids mixing different formulas that might reduce effectiveness or cause damage. Choosing a coolant that aligns with the engine’s requirements supports efficient temperature regulation, prevents overheating, and prolongs the life of the cooling system components.
Budget and availability
When selecting the best coolant for Chrysler 300, considering price comparison and value for money can help you find a product that offers reliable engine protection without unnecessary expense. Many brands provide a range of options suitable for this model, so comparing their cost alongside the features they offer ensures smart spending.
Checking the warranty and manufacturer support policies can also add confidence in the quality and longevity of the coolant chosen, giving added peace of mind should any issues arise after purchase. Balancing these factors will assist in making a well-informed decision that keeps your Chrysler 300 running smoothly.
People Also Asked
What Are The Signs Of Coolant Problems In A Chrysler 30
Signs of coolant problems in a Chrysler 300 include engine overheating, low coolant levels, and visible leaks under the vehicle. Additionally, you may notice a sweet smell, steam from the engine bay, or dashboard warning lights related to the cooling system.
Can I Use Universal Coolant In My Chrysler 30
Yes, you can use universal coolant in your Chrysler 30 as long as it meets the specifications required by the manufacturer. Always check your owner’s manual to ensure compatibility with your vehicle’s cooling system.
Is It Safe To Mix Different Types Of Coolant In A Chrysler 300?
It is generally not safe to mix different types of coolant in a Chrysler 300, as this can cause chemical reactions that reduce cooling efficiency and damage the engine. Always use the manufacturer-recommended coolant type to ensure proper protection and performance.
How Often Should I Change The Coolant In A Chrysler 30
For a Chrysler 300, it is generally recommended to change the coolant every 5 years or 100,000 miles, whichever comes first. However, always refer to your owner’s manual for the most accurate maintenance schedule specific to your model.
What Is The Recommended Type Of Coolant For A Chrysler 30
The recommended coolant for a Chrysler 300 is typically a HOAT (Hybrid Organic Acid Technology) coolant, often specified as Mopar Antifreeze/Coolant 10-Year/150,000-Mile Formula OAT. Always check the owner’s manual for the exact specification to ensure compatibility.
Conclusion
Choosing the best coolant for Chrysler 300 involves weighing both performance and compatibility with your vehicle’s engine materials. High-quality coolants provide effective temperature regulation, prevent corrosion, and extend engine lifespan, while some products may require specific maintenance routines or dilution ratios. The best coolant for Chrysler 300 is one that meets Chrysler’s specifications, offers long-lasting protection, and suits your driving conditions.
This type of coolant maintains engine efficiency and reduces the risk of overheating in various climates. Buyers should ensure they select a product compatible with their model year and follow recommended service intervals.
Ultimately, selecting the right coolant supports reliable performance and helps protect your investment without unnecessary complications.
