SKU: SKU: CGSC5031-040
The Cometic GM SBC V8 4.165in Bore .040 Thick MLX Head Gasket - C5031-040 is a precision-engineered head gasket with a 4.165" bore and .165" compressed thickness.
The Cometic MLX Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring MLX Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers for superior sealing under extreme cylinder pressures and temperatures. Precision CNC-machined to exacting tolerances, this gasket seals combustion, water jackets, and oil passages simultaneously — eliminating the need for multiple gaskets or sealing compounds.
Verified fitment: Buick Century (1977–1981); Buick LeSabre (1978, 1982); Buick Regal (1977–1981, 1986); Buick Skylark (1977–1979); Chevrolet Bel Air (1955–1975); Chevrolet Biscayne (1958–1972); Chevrolet Blazer (1969–1974); Chevrolet Brookwood (1958–1961, 1969–1972); and 76 more.