Head Gasket Set. FITS 1961-1964 XKE 3.8 & XK150 MK10 3.8. Includes head gasket & all other necessary engine gaskets, above the head gasket. Comes with qty 6 EBC3531 valve seals. Jaguar issued a tech bulletin that says to use these on the intake and the exhaust valves even if your engine did not have them installed on the exhaust valves originally. Please order qty 6 additional EBC3531 valve seals if you would like to install on the exhaust valves. (CE542)