EXPANSION TANK/CAP
Maintain optimal cooling system pressure and fluid levels. This category features OE-quality expansion tanks and pressure caps designed to accommodate coolant expansion, prevent leaks, and ensure safe engine operating temperatures.
Top Expansion tank/cap
Select a brand to find parts compatible with your vehicle.
OE Reference
Price incl. 20% VAT
OE Reference
Price incl. 20% VAT
OE Reference
Price incl. 20% VAT
OE Reference
Price incl. 20% VAT
OE Reference
Price incl. 20% VAT
OE Reference
Price incl. 20% VAT
OE Reference
Price incl. 20% VAT
OE Reference
Price incl. 20% VAT
Expansion tank/cap for Top Car Brands
Select a brand to find parts compatible with your vehicle.
Learn More About Expansion tank/cap
The expansion tank (or coolant reservoir) and its pressure cap are vital for managing the volume and pressure changes of engine coolant as it heats and cools. Over time, plastic tanks can crack due to thermal fatigue, and caps can lose their ability to hold the correct system pressure, leading to boiling coolant and engine overheating. This category provides exact-fit OE-specification replacement reservoirs and calibrated pressure caps built from heat-resistant polymers. Select your vehicle to find the durable components required to maintain a sealed, pressurized, and leak-free cooling system.
Frequently Asked Questions About Expansion tank/cap
Why are a genuine expansion tank and cap essential?
The cap regulates the pressure within the cooling system. A faulty cap can lead to boiling coolant or burst hoses.