Cometic C9743-UE MLS Cylinder Head Gasket Set 4.125" Bore .040" Harley Twin Cam

The Cometic C9743 is a Multi-Layer Steel (MLS) cylinder head gasket set designed for Harley-Davidson 117 Twin Cam engines with a 4.125-inch bore and .040-inch compressed thickness. This gasket features two outer Viton-coated embossed spring steel layers with an inner steel layer to provide additional support, creating a three-layer construction optimized for high-performance sealing.

Key Features:

• MLS head gaskets promote an even torque load across the gasket sealing surface utilizing LCE (Load Control Embossments), providing less bore distortion and better piston ring seal
• Center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements
• Outer layers are embossed and coated on both sides with Viton to meet the demands of harsh sealing environments and load conditions
• Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle
• Ideal for aluminum heads, aluminum blocks, and cast iron blocks
• Round bore shape with 3-layer construction

Sold as a pair for complete engine rebuild applications. Made in the U.S.A. Cometic gaskets are engineered to withstand the demands of high-performance and racing environments, providing reliable sealing for modified Twin Cam engines.