SKU: SKU: CGSC5699-066
The Cometic Chevrolet Gen-3 Inline 6 .066in MLS Cylinder Head Gasket - 4.125in Bore - C5699-066 is a precision-engineered head gasket with a 4.125" bore and .066" compressed thickness.
The Cometic Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers that conform to surface irregularities and maintain a positive seal. 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 Apollo (1973–1975); Buick Skylark (1968–1971); Buick Special (1968–1969); Chevrolet Bel Air (1963–1973); Chevrolet Biscayne (1963–1972); Chevrolet Blazer (1969–1974); Chevrolet Brookwood (1969–1972); Chevrolet C10 (1963–1984); and 48 more.