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 TankPart Number: MJD4400BAMaterial: Plastic Metal Color: BlackSensor Includes: YesPosition: FrontNumber of Pins: 2To Radiator Inlet Hose Outer Diameter: 40mm / 1.57 To Radiator Outlet Hose Outer Diameter: 14mm / 0.55" Size: 21.5x10.5x16.5cm / 8.46"x4.13"x6.50"(L*W*H) Fitment:for Jaguar XKR 2000-2006How to Replace:Turn off your car and allow your engine to cool down completely.Remove the bolts and the reservoir.