Cometic GM LS Gen-3/4 Small Block V8 .086in MLS Cylinder Head Gasket - 4.130in Bore - C5317-086

The Cometic GM LS Gen-3/4 Small Block V8 .086in MLS Cylinder Head Gasket - 4.130in Bore - C5317-086 is a precision-engineered head gasket with a 4.130" bore and .086" 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: 4.130"
• Thickness: .086" compressed
• Part Number: C5317-086

Verified fitment: Buick LaCrosse (2008–2009); Buick Rainier (2004–2007); Cadillac CTS (2004–2007); Cadillac Escalade (2002–2005); Chevrolet Avalanche (2007–2013); Chevrolet Avalanche 1500 (2002–2006); Chevrolet Camaro (1998–2002, 2010–2015); Chevrolet Caprice (2011–2017); and 35 more.