Cometic GM LS1 SB 4.100in Bore .040in MLS-5 Head Gasket - C5489-040

The Cometic GM LS1 SB 4.100in Bore .040in MLS-5 Head Gasket - C5489-040 is a precision-engineered head gasket with a 4.100" bore and .100" compressed thickness.

The Cometic 5-Layer Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring 5-Layer Multi-Layer Steel (MLS) construction, this gasket uses five embossed steel layers delivering exceptional clamping load distribution for high-output applications. 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: 5-Layer Multi-Layer Steel (MLS)
• Bore Size: 4.100"
• Thickness: .100" compressed
• Part Number: C5489-040

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.