Best Coolant Expansion Tanks

1. Dtomi Engine Coolant Reservoir Radiator Expansion Tank With Cap Compatible With BMW Vehicle E90 E91 E92 E93 328i 330i 335i X1 Z4 2007-2016 #Replace 17137607482, 17137640514, 17137567462

Keep your BMW running cool with this premium coolant reservoir tank. It’s designed to perfectly fit your E90, E91, E92, E93 328i, 330i, 335i, X1, and Z4 models from 2007-2016.

This high-performance part is built tough from durable plastic. It’s a direct replacement that’s easy to install. Get back on the road with confidence!

2. EVIL ENERGY Coolant Overflow Tank, Aluminum Radiator Tank, Reservoir Expansion Tank Universal 1L Black

The EVIL ENERGY Coolant Overflow Tank is a universal 1L reservoir made from durable aluminum. It’s designed to fit most vehicles and works with a 3/8″ ID fuel hose.

It has a tight-closed cap with an O-ring gasket to prevent coolant leaks. The bottom port handles radiator overflow, while the top port manages tank overflow.

Installation is simple with barb fittings and drain plugs. Using Teflon tape ensures a tight seal and leak-free performance.

3. YEHERIT 17138621092 Engine Coolant Reservoir Tank with Sensor & Cap Compatible with BMW X5 2007-2018, X6 2008-2019 Replace# 603-361 17137552546

The YEHERIT Engine Coolant Reservoir Tank is a perfect fit for BMW X5 and X6 models. It works with specific years and engines, so check your car’s details before buying.

This tank is made from strong PA plastic to handle heat and vibrations. It cuts oil dilution, wear, and emissions while boosting heating efficiency.

It comes with a one-year guarantee and quick support. If you have questions, we’ll reply within 48 hours.

4. BLACKHORSE-RACING 2.5L Universal Aluminum Coolant Radiator Overflow Expansion Tank Reservoir Recovery Water Tank Bottle for Car Truck Boat (Silver)

The BLACKHORSE-RACING 2.5L Universal Aluminum Coolant Tank is made from durable 6061 aluminum alloy. It is designed for use in cars, trucks, and boats. The tank holds 2.5 liters of coolant or water.

This overflow tank prevents coolant from spilling out of your radiator. It works by sealing the coolant under pressure and redirecting it into the tank.

The tank comes with three adapter heads: 15mm, 11mm, and 9mm. After-sales support is available for any questions or concerns.

5. Coolant Overflow Tank, Aluminum Coolant Reservoir Tank, 1L Universal Reservoir Expansion Tank, Black

Keep your engine cool with this 1L aluminum coolant overflow tank. It’s universal, fitting most vehicles, and made from durable 6061 aluminum alloy. The matte finish adds a sleek look while ensuring long-lasting performance.

It features a barbed hose connector for a secure fit and a drain valve for easy cleaning. The side-cleaning hose lets you monitor coolant levels effortlessly.

6. X AUTOHAUX Coolant Radiator Reservoir Tank 5Q0121407A Coolant Overflow Expansion Bottle with Cap and Sensor for Audi A3 8VA, 8VF 2012-20208 1 Set

Keep your Audi or Volkswagen engine running cool and smooth with this X AUTOHAUX Coolant Radiator Reservoir Tank! It’s designed to be a perfect fit for many 2012-2020 models, ensuring your engine stays at the ideal temperature.

This high-quality replacement is built tough with durable material that resists rust, oxidation, and leaks, meaning it will last. It comes complete with a cap and sensor, ready to get your cooling system back in top shape and prevent engine stalls.

It’s a direct replacement. Installation is straightforward. Your engine will thank you!

7. 603-382 Front Engine Coolant Reservoir Radiator Expansion Tank for Ford Focus 12-18 1.0L/2.0L/BATTERY EV 丨Escape 13-16 1.6L丨C-Max 13-18 2.0L丨Transit Connect 14-16 1.6L

The 603-382 Front Engine Coolant Reservoir Radiator Expansion Tank is a direct replacement for select Ford models. It fits Ford Focus, Escape, C-Max, and Transit Connect vehicles with specific engine types and years. This part is designed to match the exact function of the original coolant reservoir.

It includes a coolant reservoir and surge cap, made from high-quality plastic that resists heat and vibration. The translucent design lets you easily check the antifreeze level without opening the radiator. While not an OEM part, it offers great value and reliable performance.

Easy to install, durable, and affordable. Perfect for keeping your engine cool and running smoothly. Contact us for 24/7 support and a 1-year warranty.

8. BDFHYK Engine Coolant Expansion Reservoir Overflow Tank Compatible with BMW 525i 525xi 528i 528xi 530i 530xi 535i 535xi xDrive 545i 550i GT 645Ci 650i 2.5L 3.0L 4.4L 4.8L V8 l6 Replace ‎603-351 Z49011

The BDFHYK Engine Coolant Expansion Reservoir fits many BMW models. It is made from high-quality materials. It helps keep your engine cool and safe.

This coolant tank is easy to install. You can see the antifreeze level without opening the radiator.

It meets OE standards for durability. BDFHYK provides clear instructions and support if needed.

9. EVIL ENERGY Radiator Coolant Overflow Tank, Coolant Recovery Tank Aluminum 2L Silver

The EVIL ENERGY Radiator Coolant Overflow Tank is a universal 2L aluminum tank built to handle engine heat. It fits most vehicles, but check space before buying.

2*12mm barb ports link to hoses fast. The bottom drain port makes cleaning simple. A visual level hose shows coolant levels at a glance.

This tank balances pressure for cooler engine performance. It also traps oil sludge to extend engine life. Includes O-rings and recommends Teflon tape for a leak-free seal.

10. YEHERIT 603-973 Coolant Expansion Reservoir Tank with Cap Compatible with Chevy Silverado 1500 2500 Tahoe, GMC Sierra 1500 Yukon, Cadillac Escalade 2014-2020 Replace# 22856231, 3014134

The YEHERIT 603-973 Coolant Expansion Reservoir Tank is designed for vehicles like the Chevy Silverado, GMC Sierra, and Cadillac Escalade. It fits several models from 2014 to 2020 with multiple engine sizes, including 5.3L and 6.2L options.

This expansion tank helps store coolant and releases excess pressure when the engine heats up. It’s made from durable PA plastic to resist heat and vibrations, ensuring long-lasting performance.

The tank improves cooling efficiency and reduces oil dilution. It also helps decrease fuel consumption and emissions. One-year guarantee included.