Best GM Coolant Overflow Tanks

Looking for the best GM coolant overflow tanks? We’ve reviewed the top 10 options to help you find the perfect match for your vehicle.

Keeping your GM vehicle’s engine cool is key to its performance and lifespan. A reliable coolant overflow tank plays a vital role in this. It helps prevent overheating and keeps your engine running smoothly.

Whether you drive a Chevy, GMC, or Cadillac, the right coolant tank is essential. It handles heat, pressure, and vibrations, ensuring your vehicle stays safe. Choosing the best fit for your model is easy with the right guide.

We’ve tested and reviewed the top GM coolant overflow tanks to save you time. From classic trucks to modern SUVs, we’ve got you covered. Let’s dive in and find the perfect match for your ride!

List of Top 10 GM Coolant Overflow Tanks

Title	Best For	Price
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	This product is perfect for drivers who want a strong, reliable coolant tank that keeps their engine safe. It’s great for anyone who needs a simple, solid fix for overheating issues.	View on Amazon (paid link)
603-973 Coolant Overflow Reservoir Tank with Cap For Chevy Silverado 1500,Tahoe,Suburban/GMC Sierra 1500,Yukon,Yukon XL/Cadillac Escalade Replace# 22856231, 3014134	This coolant overflow reservoir tank is perfect for drivers who need a reliable replacement for their Chevy, GMC, or Cadillac. It’s easy to install and built to last, keeping your engine cool and running smoothly.	View on Amazon (paid link)
22870828 Engine Coolant Reservoir Tank with Cap Compatible with Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007-2013 Coolant Overflow Tank Replace 603-054	This coolant reservoir tank is perfect for anyone with a 2007-2013 Silverado 1500, Sierra 1500, Suburban, Tahoe, Yukon, or Escalade. It’s a reliable, cost-effective replacement that fits perfectly and works like the original.	View on Amazon (paid link)
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	This coolant reservoir tank is perfect for owners of 1999-2007 GM trucks and SUVs who want a direct fit replacement. It’s ideal for DIYers with basic mechanical skills looking for a simple, no-modification installation.	View on Amazon (paid link)
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	This coolant reservoir tank is perfect for owners of older Chevrolet, GMC, or GM vehicles like the CK Series, RV Pickups, Blazer, or Suburban. It’s easy to install and built to last, keeping your engine cool and efficient.	View on Amazon (paid link)
Engine Coolant Reservoir Tank, Coolant Expansion Reservoir Tank with Cap Compatible with Silverado 1500 Tahoe Sierra 1500 Yukon Escalade 2014 2015 2016 2017 2018 2019 2020 Replace# 603-973, 22856231	This engine coolant reservoir tank is perfect for anyone with a 2014-2020 Silverado 1500, Tahoe, Sierra 1500, Yukon, or Escalade needing a reliable replacement part. It’s easy to install and built to last, saving you time and money.	View on Amazon (paid link)
TRQ Radiator Coolant Reservoir Overflow Bottle with Cap Compatible with 2020-2025 Chevrolet Silverado 2500HD/3500HD 2020-2025 GMC Sierra 2500HD/3500HD 6.6L V8 Gas	If you own a 2020‑2025 Silverado or Sierra 2500HD/3500HD with a 6.6L V8, this overflow bottle is a fit‑right-ahead solution. It is pre‑assembled so you can install it with no extra work.	View on Amazon (paid link)
LQI Engine Coolant Recovery Expansion Tank w/Cap & Hose Compatible with GM Chevy GMC C/K Series 1981-1987, RV Pickups 1988-1991, Full Size Blazer Suburban Truck HD81-87, White Coolant Overflow Bottle	This coolant recovery tank is perfect for owners of older GM trucks and SUVs. It’s a great fit for 1981-1987 Chevy GMC C/K Series, 1988-1991 RV Pickups, and Full Size Blazer & Suburban models.	View on Amazon (paid link)
LQI Engine Radiator Coolant Overflow Recovery Expansion Tank with Cap	This coolant overflow tank is perfect for owners of older Chevy, GMC, or GM trucks and SUVs who want to keep their vehicles running smoothly. It’s easy to install and built to last, making it ideal for anyone looking to protect their engine and save on fuel.	View on Amazon (paid link)
22870828 Engine Coolant Reservoir Tank with Cap Fit for Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007 2008 2009 2010 1011 2012 2013 Coolant Overflow Tank Replace 603-054	This coolant reservoir tank is perfect for anyone with a 2007-2014 Cadillac Escalade, Chevrolet Silverado, Suburban, Tahoe, or Avalanche. It’s easy to install and built to last, keeping your engine cool and running smoothly.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 GM Coolant Overflow Tanks in this expert-reviewed guide. Each product is chosen for durability, performance, and value, ensuring your engine stays cool and efficient. Whether you need a direct-fit replacement or a classic model upgrade, this guide has you covered. Find the perfect tank to keep your vehicle running smoothly and confidently.

1. 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

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

This coolant tank keeps your engine safe and steady. It fits many Chevy, GMC, and Cadillac trucks and SUVs from 2007 to 2014.

The tank is made from strong PA plastic that handles heat and shakes with ease. It helps cut wear, fuel use, and emissions.

It stores extra coolant. It keeps pressure in check. It sends fluid back when the engine cools.

Pros	Cons
Fits many Chevy, GMC, Cadillac models perfectly. Durable PA plastic resists heat and vibrations. Reduces wear, fuel use, and emissions. One-year guarantee with quick support.	No installation tools included, making setup harder. Limited compatibility with newer vehicle models. Plastic material may crack under extreme conditions.

Perfect For:

This product is perfect for drivers who want a strong, reliable coolant tank that keeps their engine safe. It’s great for anyone who needs a simple, solid fix for overheating issues.

Ready to Purchase?

View Price on Amazon (paid link)

603-973 Coolant Overflow Reservoir Tank with Cap For Chevy Silverado 1500,Tahoe,Suburban/GMC Sierra 1500,Yukon,Yukon XL/Cadillac Escalade Replace# 22856231, 3014134

The 603-973 Coolant Overflow Reservoir Tank is a must-have replacement for your vehicle’s cooling system. It fits Chevy, GMC, and Cadillac models from 2014 to 2018, ensuring your engine stays at the right temperature.

Made from quality materials, this tank is durable and long-lasting. It comes with a cap included and is easy to install.

Pros	Cons
Fits many Chevy, GMC, and Cadillac models perfectly. Keeps your engine cool and running smoothly. Durable materials for long-lasting performance. Easy to install, no manual needed. 1-year service guarantee for peace of mind.	No manual included, may slow first-time installs Exact fit checks needed for many vehicle models Pro install recommended, not ideal for beginners

Perfect For:

This coolant overflow reservoir tank is perfect for drivers who need a reliable replacement for their Chevy, GMC, or Cadillac. It’s easy to install and built to last, keeping your engine cool and running smoothly.

Ready to Purchase?

View Price on Amazon (paid link)

3. 22870828 Engine Coolant Reservoir Tank with Cap Compatible with Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007-2013 Coolant Overflow Tank Replace 603-054

22870828 Engine Coolant Reservoir Tank with Cap Compatible with Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007-2013 Coolant Overflow Tank Replace 603-054

Keep your engine cool with the 22870828 Engine Coolant Reservoir Tank. It’s designed to fit perfectly with popular models like Silverado 1500, Sierra 1500, and Tahoe.

OEM design saves time and money. Works just like the original. Durable materials ensure it lasts long. Easy to install.

Enjoy peace of mind with a 1-year warranty. Premium service means you can contact us anytime for help.

Pros	Cons
OEM design saves time and money, works like original. Fits multiple models, perfect for Silverado, Sierra, Tahoe, Yukon. Durable materials ensure long-lasting performance and reliability. 1-year warranty offers a truly worry-free shopping experience.	No visible fluid level indicator in the tank. Installation needs basic hand tools. Limited to certain model years only.

Perfect For:

This coolant reservoir tank is perfect for anyone with a 2007-2013 Silverado 1500, Sierra 1500, Suburban, Tahoe, Yukon, or Escalade. It’s a reliable, cost-effective replacement that fits perfectly and works like the original.

Ready to Purchase?

View Price on Amazon (paid link)

4. 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

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

The 603102 Coolant Reservoir Tank is a direct fit replacement for many GM trucks and SUVs. It works with 1999-2007 Chevy Silverado, 2000-2006 Suburban/Tahoe, 1999-2006 GMC Yukon/Sierra, and 2002-2006 Cadillac Escalade. This complete kit includes a sensor and cap, making it a practical choice for your cooling system needs.

Made from durable PP plastic, it features a pressure-tested cap to maintain optimal system pressure. Installation is simple, using factory points, and it comes with a 60-month warranty for long-term confidence.

Pros	Cons
Fits your GM truck with ease Strong PP build for long use Sensor and cap included Fast install with factory points Backed by a 60‑month warranty	No DIY tools included, so you’ll need your own. Plastic material may not match OEM durability over time. Sensor compatibility relies on correct vehicle model and year.

Perfect For:

This coolant reservoir tank is perfect for owners of 1999-2007 GM trucks and SUVs who want a direct fit replacement. It’s ideal for DIYers with basic mechanical skills looking for a simple, no-modification installation.

Ready to Purchase?

View Price on Amazon (paid link)

5. 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

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 classic Chevy or GMC running cool with the A-Premium Engine Coolant Overflow Recovery Reservoir Tank. This durable plastic tank is designed to handle extreme heat and vibration, ensuring your engine stays protected.

Compatible with 1981-1991 models, including CK Series, RV Pickups, Blazer, and Suburban, this kit comes complete with cap, tubing, and mounting hardware. It’s a perfect fit for your vehicle, saving you time and hassle.

Engineered for performance, this tank reduces oil dilution, cylinder wear, and emissions. Buy with confidence—A-Premium offers a one-year unlimited-mileage guarantee.

Pros	Cons
Fits many Chevrolet, GMC, and GM vehicles from 1981-1991. Includes cap, tubing, and mounting hardware for easy installation. Durable materials resist heat and vibration, ensuring long-lasting use. Reduces fuel consumption and exhaust emissions, saving you money. One-year guarantee for peace of mind on the road.	No universal fit, limited to specific Chevrolet, GMC, and GM models. Plastic material may not last as long as metal alternatives. Requires installation, not a plug-and-play solution.

Perfect For:

This coolant reservoir tank is perfect for owners of older Chevrolet, GMC, or GM vehicles like the CK Series, RV Pickups, Blazer, or Suburban. It’s easy to install and built to last, keeping your engine cool and efficient.

Ready to Purchase?

View Price on Amazon (paid link)

6. Engine Coolant Reservoir Tank, Coolant Expansion Reservoir Tank with Cap Compatible with Silverado 1500 Tahoe Sierra 1500 Yukon Escalade 2014 2015 2016 2017 2018 2019 2020 Replace# 603-973, 22856231

Engine Coolant Reservoir Tank, Coolant Expansion Reservoir Tank with Cap Compatible with Silverado 1500 Tahoe Sierra 1500 Yukon Escalade 2014 2015 2016 2017 2018 2019 2020 Replace# 603-973, 22856231

This coolant tank is built to match the original part, so it fits right and works well. It helps keep your engine cool and safe.

It fits the Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban, and Escalade. The build is strong and made to last.

You get a solid tank. You get a tight cap. You get easy peace of mind.

Pros	Cons
OEM Design saves time and money, works like original. Fits perfectly with Silverado, Tahoe, Yukon, and more. Durable materials ensure long-lasting and reliable performance. 1-year warranty offers a worry-free shopping experience.	Installation needs tools, may be off-putting. Fitment may vary with engine version. Cap color could differ from original.

Perfect For:

This engine coolant reservoir tank is perfect for anyone with a 2014-2020 Silverado 1500, Tahoe, Sierra 1500, Yukon, or Escalade needing a reliable replacement part. It’s easy to install and built to last, saving you time and money.

Ready to Purchase?

View Price on Amazon (paid link)

7. TRQ Radiator Coolant Reservoir Overflow Bottle with Cap Compatible with 2020-2025 Chevrolet Silverado 2500HD/3500HD 2020-2025 GMC Sierra 2500HD/3500HD 6.6L V8 Gas

TRQ Radiator Coolant Reservoir Overflow Bottle with Cap Compatible with 2020-2025 Chevrolet Silverado 2500HD/3500HD 2020-2025 GMC Sierra 2500HD/3500HD 6.6L V8 Gas

The TRQ Radiator Coolant Reservoir is a direct-fit replacement for 2020-2025 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD with a 6.6L V8 Gas engine. It comes with a cap and is pre-assembled for easy installation. This part ensures your vehicle’s cooling system works smoothly.

Save time with pre-assembled components that fit perfectly. No modifications are needed, making repairs quick and simple.

Trust TRQ with over 25 years of experience in direct-fit replacement parts. Use Amazon Garage to confirm fitment and ensure compatibility before buying.

Pros	Cons
Fits perfectly with your Chevy or GMC truck. Easy DIY install with pre-assembled parts—no mods needed. Trusted brand with 25+ years of reliable replacements. Guided videos make repairs simple and stress-free.	No warranty details provided for this product. Limited compatibility with specific truck models only. Plastic material may not withstand extreme temperatures.

Perfect For:

If you own a 2020‑2025 Silverado or Sierra 2500HD/3500HD with a 6.6L V8, this overflow bottle is a fit‑right-ahead solution. It is pre‑assembled so you can install it with no extra work.

Ready to Purchase?

View Price on Amazon (paid link)

8. LQI Engine Coolant Recovery Expansion Tank w/Cap & Hose Compatible with GM Chevy GMC C/K Series 1981-1987, RV Pickups 1988-1991, Full Size Blazer Suburban Truck HD81-87, White Coolant Overflow Bottle

LQI Engine Coolant Recovery Expansion Tank w/Cap & Hose Compatible with GM Chevy GMC C/K Series 1981-1987, RV Pickups 1988-1991, Full Size Blazer Suburban Truck HD81-87, White Coolant Overflow Bottle

Keep your engine cool and running smoothly with the LQI Coolant Recovery Tank. It’s compatible with GM trucks from 1981 to 1991, including Chevy, GMC, and RV pickups. Made from high-quality HDPE material, it’s built to last.

This tank prevents coolant overflow and protects your engine from damage. It’s easy to install and meets OE standards, ensuring a perfect fit.

Pros	Cons
Perfect fit for GM trucks, Blazer, Suburban, and RV pickups. Durable HDPE material resists vibration and engine heat. Protects engine by reducing wear and fuel consumption. Meets OE standards for reliable performance and easy install.	No universal fit, limited to specific GM models. White color may show dirt easily. Requires careful installation to avoid leaks.

Perfect For:

This coolant recovery tank is perfect for owners of older GM trucks and SUVs. It’s a great fit for 1981-1987 Chevy GMC C/K Series, 1988-1991 RV Pickups, and Full Size Blazer & Suburban models.

Ready to Purchase?

View Price on Amazon (paid link)

9. LQI Engine Radiator Coolant Overflow Recovery Expansion Tank with Cap

The LQI Engine Radiator Coolant Overflow Recovery Expansion Tank is a must-have for Chevy, GMC, and GM C/K Series Truck owners. It’s compatible with models from 1981-1987 and works with RV Pickups, Blazer, and Suburban from 1988-1991.

Made from high-quality HDPE material, it’s strong and long-lasting. It protects your engine, saves fuel, and is easy to install.

Pros	Cons
Perfect fit for Chevy, GMC, and GM trucks and SUVs. Durable HDPE material ensures long-lasting performance. Works in extreme weather, no rust or breaks. Protects your engine, reduces wear and fuel use. Easy to install, saves time and hassle.	Limited vehicle compatibility, not a universal fit for all models. No mounting hardware included, requires extra purchase. Plastic cap may wear out faster than expected.

Perfect For:

This coolant overflow tank is perfect for owners of older Chevy, GMC, or GM trucks and SUVs who want to keep their vehicles running smoothly. It’s easy to install and built to last, making it ideal for anyone looking to protect their engine and save on fuel.

Ready to Purchase?

View Price on Amazon (paid link)

10. 22870828 Engine Coolant Reservoir Tank with Cap Fit for Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007 2008 2009 2010 1011 2012 2013 Coolant Overflow Tank Replace 603-054

22870828 Engine Coolant Reservoir Tank with Cap Fit for Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007 2008 2009 2010 1011 2012 2013 Coolant Overflow Tank Replace 603-054

Keep your engine cool with this 22870828 Engine Coolant Reservoir Tank. It fits many GM vehicles from 2007 to 2014. This tank works with Silverado, Sierra, Tahoe, Yukon, and Escalade models.

The coolant tank stops overheating and engine stalling. It handles extreme temperatures and pressure changes. Made from premium materials, it’s built to last.

Enjoy a 1-year warranty for peace of mind. Contact us anytime with questions.

Pros	Cons
Fits many popular GM vehicles, 2007-2014. Replaces multiple part numbers, saving time and money. Keeps engine cool, prevents overheating and stalling. Built tough, resists extreme temps and pressure. 1-year warranty, hassle-free shopping guaranteed.	May not fit all trim levels Plastic build can wear over long use Install may need basic tools

Perfect For:

This coolant reservoir tank is perfect for anyone with a 2007-2014 Cadillac Escalade, Chevrolet Silverado, Suburban, Tahoe, or Avalanche. It’s easy to install and built to last, keeping your engine cool and running smoothly.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Keeping your GM vehicle cool is key to its health. A reliable coolant overflow tank helps prevent overheating. This guide makes choosing the best one easy.

Finding the right coolant tank is simple with this guide. We’ll walk you through top picks and key factors to consider. Let’s keep your engine running smoothly!

Factors to Consider When Buying a GM Coolant Overflow Tank:

Compatibility:
Make sure the tank fits your GM model and year. Check for specific compatibility to avoid issues.
Material Quality:
Look for tanks made from durable materials like PA plastic or HDPE. They handle heat and vibration better.
Ease of Installation:
Choose a tank that’s easy to install. Pre-assembled or direct-fit options save time and effort.
Warranty:
A good warranty gives you peace of mind. Look for 1-year or 60-month coverage.
Included Components:
Some tanks come with caps, sensors, or tubing. These extras can make installation simpler.
Price and Value:
Compare prices and features to find the best value. Don’t sacrifice quality for a lower cost.
Brand Reputation:
Trust brands with a proven track record. They often offer reliable and long-lasting products.

List of Top 10 GM Coolant Overflow Tanks

Detailed Reviews

1. 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

Perfect For:

Ready to Purchase?

2. 603-973 Coolant Overflow Reservoir Tank with Cap For Chevy Silverado 1500,Tahoe,Suburban/GMC Sierra 1500,Yukon,Yukon XL/Cadillac Escalade Replace# 22856231, 3014134

Perfect For:

Ready to Purchase?

3. 22870828 Engine Coolant Reservoir Tank with Cap Compatible with Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007-2013 Coolant Overflow Tank Replace 603-054

Perfect For:

Ready to Purchase?

4. 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

Perfect For:

Ready to Purchase?

5. 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

Perfect For:

Ready to Purchase?

6. Engine Coolant Reservoir Tank, Coolant Expansion Reservoir Tank with Cap Compatible with Silverado 1500 Tahoe Sierra 1500 Yukon Escalade 2014 2015 2016 2017 2018 2019 2020 Replace# 603-973, 22856231

Perfect For:

Ready to Purchase?

7. TRQ Radiator Coolant Reservoir Overflow Bottle with Cap Compatible with 2020-2025 Chevrolet Silverado 2500HD/3500HD 2020-2025 GMC Sierra 2500HD/3500HD 6.6L V8 Gas

Perfect For:

Ready to Purchase?

8. LQI Engine Coolant Recovery Expansion Tank w/Cap & Hose Compatible with GM Chevy GMC C/K Series 1981-1987, RV Pickups 1988-1991, Full Size Blazer Suburban Truck HD81-87, White Coolant Overflow Bottle

Perfect For:

Ready to Purchase?

9. LQI Engine Radiator Coolant Overflow Recovery Expansion Tank with Cap

Perfect For:

Ready to Purchase?

10. 22870828 Engine Coolant Reservoir Tank with Cap Fit for Silverado 1500 Sierra 1500 Suburban Tahoe Yukon Escalade 2007 2008 2009 2010 1011 2012 2013 Coolant Overflow Tank Replace 603-054

Perfect For:

Ready to Purchase?

Buying Guide