Engine Coolant Reservoir Cap For Most Cars Heavy Duty Radiator Overflow Bottle Cap Easy No Fuss Replacement For Water Tank High Temperature Resistant Durable And Leak Proof Pack Of 2

Heavy Duty Engine Coolant Cap Pack 2 for leak-free sealing
✔️ Includes 2 high-temp PP caps, 1.49 in OD, 0.43 in tall

These engine coolant reservoir caps provide a secure, leak-proof seal for most cars' coolant tanks. They’re commonly used during routine maintenance or as a convenient replacement to restore proper cooling system pressure and prevent evaporation.

✅ Pack of 2 coolant reservoir caps
✅ High-temperature resistant PP material supports long service life
✅ Outer diameter 1.49 inches, inner diameter 1.18 inches, height 0.43 inches
✅ Easy twist-on installation, no tools required
✅ Compatible with most standard coolant tanks; check fitment for your vehicle

💡 What is a car coolant reservoir cap used for in everyday maintenance?

In plain terms, this handy cap seals the reservoir to prevent leaks and boil-off in the hot engine bay.

• Helps keep coolant at the correct level for consistent engine cooling
• Prevents evaporation and boil-off at high temperatures
• Constructed from high-temperature resistant PP to resist wear
• Easy replacement on many vehicles without tools