Cometic Pontiac 389 / 421 V8 4.3in Bore .040in MLS Head Gasket

The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.

This Part Fits:

Year	Make	Model	Submodel
1949-1954	Jaguar	XK120	Base
1952-1954	Jaguar	XK120	M
1955-1957	Jaguar	XK140	Base
1955-1957	Jaguar	XK140	M
1955-1957	Jaguar	XK140	MC
1958-1961	Jaguar	XK150	Base
1958-1961	Jaguar	XK150	S
1959-1966	Pontiac	Bonneville	Base
1959-1962	Pontiac	Bonneville	Custom
1959-1966	Pontiac	Bonneville	Safari
1964-1966	Pontiac	Catalina	2+2
1959-1966	Pontiac	Catalina	Base
1959-1966	Pontiac	Catalina	Safari
1962-1966	Pontiac	Catalina	Ventura
1962-1966	Pontiac	Grand Prix	Base
1964-1966	Pontiac	GTO	Base
1959-1966	Pontiac	Star Chief	Base
1966	Pontiac	Star Chief	Executive
1961,1963-1966	Pontiac	Tempest	Base
1964-1965	Pontiac	Tempest	Custom
1961	Pontiac	Tempest	LeMans
1961,1963-1966	Pontiac	Tempest	Safari
1960-1961	Pontiac	Ventura	Base