Cometic GM Gen-V/VI Big Block V8 .051in MLS Cylinder Head Gasket - 4.320in Bore - C5817-051

The Cometic GM Gen-V/VI Big Block V8 .051in MLS Cylinder Head Gasket - 4.320in Bore - C5817-051 is a precision-engineered head gasket with a 4.320" bore and .051" 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.

• Material: Multi-Layer Steel (MLS)
• Bore Size: 4.320"
• Thickness: .051" compressed
• Part Number: C5817-051

Verified fitment: Chevrolet C1500 (1991–1993); Chevrolet C2500 (1991–1995); Chevrolet C2500 Suburban (1992–1995); Chevrolet C3500 (1991–1995); Chevrolet G30 (1991–1996); Chevrolet K2500 (1991–1995); Chevrolet K2500 Suburban (1992, 1994–1995); Chevrolet K3500 (1991–1995); and 15 more.