Cometic H4546060S MLS Cylinder Head Gasket Bore Thick - 4.540in 060in

The Cometic H4546060S is a Multi-Layer Steel (MLS) cylinder head gasket featuring a 4.540-inch bore and .060-inch compressed thickness, engineered for high-performance and racing engine builds requiring a reliable, re-torque-free combustion seal.

Key Features:

• Multi-Layer Steel (MLS) construction — comprised of multiple embossed layers of proprietary high-temperature coated and uncoated stainless steel
• .060" compressed thickness — ideal for engine builds requiring additional deck clearance or compression ratio adjustment
• 4.540" bore diameter — suited for large-displacement V8 applications
• Viton rubber coating — each MLS layer is coated with a .001" thick fluoroelastomer (Viton) bonded to the outer stainless steel layers, providing a micro-seal against fluids
• No re-torque required — MLS design promotes an even torque load across the sealing surface for reduced bore distortion
• Installs dry — factory Viton coating eliminates the need for additional sealants
• Compatible with aluminum head-to-cast iron block and aluminum head-to-aluminum block configurations
• Requires a surface finish of 50 Ra or finer for optimal sealing performance

Cometic MLS head gaskets are developed with the performance enthusiast in mind, delivering race-proven sealing technology suitable for street, strip, and competition engine applications.