Cometic Pontiac 428 / 455 V8 4.380in Bore .036in MLS Headgasket

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.036". Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.
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Certificate of Origin
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
1975	Buick	LeSabre	Custom
1975	Oldsmobile	98	Luxury
1975	Oldsmobile	98	Regency
1975	Oldsmobile	Custom Cruiser	Base
1975	Oldsmobile	Custom Cruiser	Panel
1975	Oldsmobile	Delta 88	Base
1975	Oldsmobile	Delta 88	Royale
1967-1978	Pontiac	Bonneville	Base
1976-1978	Pontiac	Bonneville	Brougham
1968-1970,1978	Pontiac	Bonneville	Safari
1967	Pontiac	Catalina	2+2
1967-1978	Pontiac	Catalina	Base
1971-1972	Pontiac	Catalina	Brougham
1968-1978	Pontiac	Catalina	Safari
1967-1970	Pontiac	Catalina	Ventura
1967-1970	Pontiac	Executive	Base
1968-1970	Pontiac	Executive	Safari
1967-1969	Pontiac	Firebird	400
1967-1977	Pontiac	Firebird	Base
1970-1974,1976	Pontiac	Firebird	Esprit
1970-1979	Pontiac	Firebird	Formula
1967	Pontiac	Firebird	HO
1969-1979	Pontiac	Firebird	Trans Am
1973-1975	Pontiac	Grand Am	Base
1975-1977	Pontiac	Grand LeMans	Base
1975,1977	Pontiac	Grand LeMans	Safari
1967-1974,1976-1977	Pontiac	Grand Prix	Base
1975,1977	Pontiac	Grand Prix	LJ
1975-1977	Pontiac	Grand Prix	SJ
1971-1978	Pontiac	Grand Safari	Base
1971-1974	Pontiac	Grandville	Base
1975	Pontiac	Grandville	Brougham
1967-1973	Pontiac	GTO	Base
1970-1971	Pontiac	GTO	The Judge
1967-1977	Pontiac	LeMans	Base
1972-1974	Pontiac	LeMans	Luxury
1969-1970,1973-1975,1977	Pontiac	LeMans	Safari
1974	Pontiac	LeMans	Safari Luxury
1970-1977	Pontiac	LeMans	Sport
1971	Pontiac	LeMans	T37
1967-1970	Pontiac	Tempest	Base
1968-1969	Pontiac	Tempest	Custom
1968-1969	Pontiac	Tempest	Safari