Fitment: 2000-2002 Jaguar S-Type Base 3.0L 2000-2002 Jaguar S-Type Sport 4.0L 2000-2002 Jaguar S-Type Base 4.0L For more details,pls check compatibility Chart. What is an expansion tank on a car? The expansion tank absorbs excess coolant and minimizes excess pressure in the engine cooling system. An expansion tank helps maintain a minimal pressure increase during heated water expansion, helps reduce coolant hammer, and helps protect the engine cooling system from stress. Features: .
