Part is the Power Brake Booster for cars NOT equipped with Dynamic Stability Control for a 1999 to 2002 Jaguar S-Type. It will NOT fit the S-Type built after 2002. Jaguar Part # is XR815109. Part carries a limited 30 day warranty - ALL SALES FINAL NO REFUNDS EXCHANGE ONLY IF DEFECTIVE.

LOOK AT YOUR BRAKE MASTER CYLINDER IF IT HAS TWO ELECTRICAL SWITCHES COMING AT AN ANGLE FROM THE BOTTOM OF THE MASTER CYLINDER IT HAS DYNAMIC STABILITY CONTROL - NO SWITCHES THEN NO DYNAMIC STABILITY CONTROL THIS PART WILL ONLY FIT CARS THAT ARE NOT EQUIPPED WITH DYNAMIC STABILITY CONTROL.