SKU: SKU: CGSC5255-027
The Cometic Chevrolet 348/409 W-Series Big Block V8 .027in MLS Cylinder Head Gasket - 4.200in Bore - C5255-027 is a precision-engineered head gasket with a 4.200" bore and .027" 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: Chevrolet Bel Air (1958–1965); Chevrolet Biscayne (1958–1965); Chevrolet Brookwood (1958–1961); Chevrolet C10 (1960–1961); Chevrolet C20 (1960–1961); Chevrolet C30 (1960–1961); Chevrolet Del Ray (1958); Chevrolet El Camino (1959–1960); and 10 more.