Best GM Coolant Reservoir Replacements

1. GM Genuine Parts 85604316 Coolant Recovery Reservoir

Keep your engine cool with the GM Genuine Parts 85604316 Coolant Recovery Reservoir. It stores heated coolant when pressures rise. Then, it reintroduces coolant when it cools down.

This part is designed by GM engineers for your Chevrolet, Buick, GMC, or Cadillac. It meets GM’s high standards and uses the latest materials and technology.

2. A-Premium Engine Coolant Overflow Recovery Reservoir Tank [with Cap & Tubing] Compatible with 1981-1991 Chevrolet & GMC & GM Vehicles – CK Series, RV Pickups, Blazer, Suburban, Full Size Truck

Keep your engine cool with the A-Premium Engine Coolant Overflow Recovery Reservoir Tank. It’s compatible with 1981-1991 Chevrolet, GMC, and GM vehicles, including CK Series, RV Pickups, Blazer, and Suburban. This kit includes everything you need: a tank, cap, tubing, and mounting hardware.

Built tough, this tank handles extreme heat and vibration while cutting down on oil dilution, cylinder wear, and emissions. Plus, it comes with a one-year unlimited-mileage guarantee, so you can drive with peace of mind.

3. 603102 Coolant Reservoir Tank with Sensor & Cap – Direct Fit Replacement for 1999-2007 Chevy Silverado 1500 HD, 2002-2006 Cadillac Escalade, 2000-2006 Suburban/Tahoe, 1999-2006 GMC Yukon/Sierra

Keep your GM truck or SUV running cool with this direct-fit coolant reservoir tank. It’s made to match the original part perfectly, fitting 1999-2007 Chevy Silverado, Suburban, Tahoe, GMC Yukon, Sierra, and 2002-2006 Cadillac Escalade. No modifications needed for a smooth install.

Built from durable PP plastic, this tank includes a pressure-tested cap that prevents coolant boiling. The cap is tested to handle 200,000 cycles at 35 PSI, ensuring reliable performance. It’s a complete kit with a sensor and cap, saving you time and hassle.

Installation is simple and quick, using factory mounting points. Plus, it comes with a 60-month warranty for peace of mind. Perfect for DIY repairs and long-term reliability.

4. LQI Engine Radiator Coolant Overflow Recovery Expansion Tank with Cap Fit Chevy GMC GM C/K Truck 1981-1987, RV Pickup Blazer Suburban 1988-1991 White Coolant Reservoir Bottle

Keep your classic Chevy or GMC running cool with this LQI Engine Radiator Coolant Overflow Recovery Expansion Tank. It’s designed to fit perfectly on your 1981-1987 C/K truck or 1988-1991 RV, pickup, Blazer, or Suburban.

Made from strong HDPE material, this tank is built to last. It won’t rust or break easily, even in extreme weather. Its tough internal structure ensures a long service life.

This tank protects your engine by reducing oil dilution and cylinder wear. It also helps lower fuel consumption. Easy to install, it fits your vehicle perfectly after strict quality testing.

5. GM Genuine Parts RC122 (85604317) Coolant Recovery Reservoir Cap

The GM Genuine Parts RC122 is a coolant recovery reservoir cap. It helps keep coolant in your engine. This part is designed to work with your GM vehicle.

It maintains coolant pressure at the right level. This prevents leaks and keeps your engine safe.

This GM Genuine Part is made to high standards. It is tested and approved by GM engineers. You can trust it to fit your Chevrolet, Buick, GMC, or Cadillac.

6. ZZCSZ 603-386 Front Engine Coolant Reservoir Tank Replacement Compatible with 2012 – 2020 Chevrolet Chevy Sonic Replaces 603386, 42609220, GM3014167, 13502353, 95048411

The ZZCSZ 603-386 Front Engine Coolant Reservoir Tank is a direct replacement for your Chevrolet Chevy Sonic. It fits 2012 to 2020 models perfectly. This part keeps your engine cool by storing extra coolant.

It’s made from quality materials to handle heat and vibration. Installation is straightforward, but professional help is recommended.

This product comes with a 1-year warranty for peace of mind. Save money compared to buying from a dealer. Shop confidently with ZZCSZ.

7. PRORONRA 603-054 Engine Coolant Tank Reservoir with Cap Replacement For Chevrolet Silverado 1500 2500 3500, Replace 22870828 22797286

The PRORONRA 603-054 Engine Coolant Tank Reservoir is a perfect fit for many Chevrolet and GMC models. It replaces old parts like 22870828 and 22797286. Made from premium plastic, it’s tough and weatherproof.

This reservoir improves heat transfer, keeping your engine cool and efficient. It’s easy to install and lasts a long time, saving you money and hassle.

8. Sumjig 1 PC Car Expansion Pot Cap, 15PSI Radiator Coolant Reservoir Cap, Replacement Modification OEM Part Number 15075118 Accessories, Compatible with GM Cadillac Chevrolet Buick Hummer (Black)

The Sumjig Car Expansion Pot Cap is a direct replacement for your vehicle’s coolant reservoir cap. It’s compatible with GM, Cadillac, Chevrolet, Buick, and Hummer models, replacing OEM part number 15075118.

Easy to install, this gear-shaped cap requires no tools. It’s designed to withstand high temperatures and resist aging, ensuring a long service life. The high-quality sealing materials prevent coolant leaks and maintain stable system pressure.

With its safety valve function, this cap prevents overpressure and system damage. It keeps the water tank closed, avoiding antifreeze leaks and improving radiator heat dissipation. A reliable and convenient solution for your vehicle’s cooling system.

9. GDUKOP 603-054 Engine Coolant Expansion Reservoir Tank with Cap Compatible with Chevy Silverado 1500 2500 Tahoe, GMC Sierra 1500 Yukon, Cadillac Escalade 2007-2013 Replace# 22870828 15075118

The GDUKOP 603-054 Engine Coolant Expansion Reservoir Tank fits many Chevy, GMC, and Cadillac models. It’s compatible with 2007–2014 vehicles like the Silverado, Tahoe, and Escalade. This tank replaces OE numbers like 22870828 and 15075118.

Made from durable PA plastic, it handles heat and vibrations well. It helps reduce oil dilution, wear, and emissions. Plus, it improves heating efficiency for better performance.

We offer a one-year guarantee on this tank. If you have questions, we’ll respond within 48 hours.

10. BALOCEO Coolant Reservoir Compatible with 2010-2015 Chevrolet Camaro 3.6L V6/6.2L V8 Replacement for GM3014172 22902563 Radiator Recovery Tank PP Plastic Black

The BALOCEO Coolant Reservoir is perfect for 2010-2015 Chevrolet Camaro models. It fits 3.6L V6, 6.2L V8, and 7.0L V8 engines. This part replaces GM3014172 and 22902563 easily.

Made from durable PP plastic, it handles high temperatures without leaks. Its leak-proof seal keeps your engine safe. Enjoy long-lasting performance for your cooling system.

The optimized design boosts coolant flow and prevents overheating. Installation is quick and simple, with no extra tools needed. You get one coolant reservoir in the package.