Cometic GM LHU/LNF Gen-2 ECOTEC .040in MLX Cylinder Head Gasket - 88mm Bore - C15256-040

The Cometic GM LHU/LNF Gen-2 ECOTEC .040in MLX Cylinder Head Gasket - 88mm Bore - C15256-040 is a precision-engineered head gasket with a 88mm bore and .040" compressed thickness.

The Cometic MLX Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring MLX Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers for superior sealing under extreme cylinder pressures and temperatures. 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: MLX Multi-Layer Steel (MLS)
• Bore Size: 88mm
• Thickness: .040" compressed
• Part Number: C15256-040

Verified fitment: Buick Regal (2011–2013); Chevrolet HHR (2010).