Feature: The coolant reservoir is attached to the radiator and the engine with hoses and is an important component of the cooling system, which holds the excess coolant fluid used to cool the engine. When a coolant expansion tank has any issues it can lead to issues that: Constantly low on coolant, coolant leaks, engine overheating. This is a non-OEM product, accessory only! Specification: Type: Coolant Radiator Reservoir Tank Part Number: 1304233, 09128766 Material: Plastic Color: Clear Size: 18.5x12x18cm / 7.28"x4.72"x7.09"(L*W*H) Inner Diameter: 40mm / 1.57" Fitment: for Opel for Vauxhall Combo C Corsa C MK2 TigraHow to Replace: Turn off your car and allow your engine to cool down completely. Remove the bolts and the reservoir. Allow the remaining coolant to flow back into the drain pan. Replace the new reservoir tank and reinstall the coolant hose to the radiator and tighten the clamp. Refill the tank with a new coolant and run the engine to check if functions well. Package Included: 1 x Coolant Radiator Expansion Tank 1 x Cap