Cometic C5646-036 MLS Cylinder Head Gasket Bore GM - 4.100 036 LT1/LT4

The Cometic C5646-036 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM LT1 and LT4 Gen-2 small block V8 engines found in 1992-1996 Corvettes, Camaros, Firebirds, and other performance applications. This gasket features a valve-pocketed design with a 4.100-inch bore and a compressed thickness of .036 inches, making it ideal for stock and mildly modified engines.

Key Features:

• Three-layer stainless steel construction for superior strength and durability
• Viton-coated outer layers provide excellent sealing without the need for additional sealants
• Compressed operating thickness of 0.036 inches
• Valve-pocketed bore design accommodates stock valve configurations
• 4.100-inch bore diameter fits standard and slightly overbored applications
• Resists corrosion and maintains excellent rebound characteristics
• Ideal for both aluminum-to-aluminum and aluminum-to-cast iron sealing applications
• Withstands extreme cylinder pressures from naturally aspirated, boosted, or nitrous-fed engines

Cometic MLS gaskets feature multiple embossed layers of stainless steel with Viton rubber-coated outer surfaces that are heat resistant to 482°F. The multi-layer design reduces bore distortion while providing maximum sealing performance. These gaskets install dry and require no re-torque. A surface finish of 50 RA (roughness average) or finer is recommended for optimal sealing. Sold individually—order two for a complete set.