Cometic C9791-040-020 Millennium Cylinder Head & Base Gasket Kit 3-9/16" Bore

The Cometic C9791-040-020 Millennium gasket kit provides a complete top-end sealing solution for engines with a 3-9/16" (3.5625") bore diameter. This kit includes both head and base gaskets engineered with Cometic's advanced Multi-Layer Steel (MLS) technology for superior sealing performance under extreme conditions.

Kit Specifications:

• Head gasket thickness: .040" (0.040 inches)
• Base gasket thickness: .020" (0.020 inches)
• Bore diameter: 3-9/16" (3.5625 inches)
• Multi-Layer Steel construction for maximum durability
• Includes both head and base gaskets for complete coverage

Cometic's Millennium gaskets feature multiple layers of stainless steel with proprietary coating technology that ensures excellent sealing while accommodating minor surface imperfections. The MLS design allows gaskets to withstand extreme cylinder pressures and temperatures while maintaining their sealing integrity. These gaskets are ideal for high-performance applications, custom builds, and engine rebuilds where precision and reliability are critical.

The specific gasket thicknesses in this kit allow builders to fine-tune compression ratios and deck height for optimal engine performance. The .040" head gasket and .020" base gasket combination provides flexibility for various engine configurations and performance goals.