WATER HEATER VALVE Jaguar XK8 XJ8 XJ6 XJR XKR 1994-2006 (interior heating)

XJ6 XJ8 XJ12 XJR X300 X308 models 1994-2002 (VIN range 720125 through to 878717, F00001 through to F59525). XK8 XKR models 1996-2006 (VIN range 000001 through to 042775, A00001 through to A99999). If you have no cold air or find that your heater is stuck on hot this is MOST likely to be the cause.