Cometic C10159 Big Bore Head Gasket Kit for Harley XL 1991-2003

The Cometic C10159 is a high-performance big bore head gasket kit designed specifically for 1991-2003 Harley-Davidson Sportster XL models with 1250cc big bore cylinder kits. This premium gasket features a 3.563-inch bore diameter and .030-inch thickness, engineered to provide superior sealing for competition motors and high-performance applications.

Key Features:

• 3.563-inch bore diameter designed for 1250cc big bore applications
• .030-inch (H/G) gasket thickness for precise compression control
• Multi-Layer Steel (MLS) construction for maximum durability and sealing
• Engineered for competition motors and high-performance builds
• Direct replacement for Harley-Davidson Sportster XL models 1991-2003
• Cometic's premium materials resist blowout and temperature extremes

Cometic gaskets are manufactured using advanced materials and processes to deliver race-proven reliability. The MLS design allows the gasket to recover and maintain torque retention, making it ideal for engines that experience extreme temperatures and cylinder pressures. This head gasket is essential for properly sealing big bore cylinder kits and ensuring optimal engine performance.