Cometic C10284 MLS Head Gasket Set Bore Milwaukee-Eight - 4.250 040

The Cometic C10284 is a multi-layer steel (MLS) cylinder head gasket pair designed to provide maximum sealing performance for high output engines, specifically engineered for Harley-Davidson Milwaukee-Eight engines with 4.250" big bore applications. This complete gasket set is designed for use with 124" and 128" big bore kits on 2017 and newer Milwaukee-Eight platforms.

Key Features:

• Multiple layers of stainless steel with embossed outer layers and a heat resistant Viton coating
• Proprietary high temperature coated stainless steel construction requiring less clamp load and creating less bore distortion
• Load-controlled embossments that conform load distribution across the sealing area
• Resistant to corrosion and able to withstand high heat (250 deg C) and load conditions
• Requires no additional sealants or re-torquing
• 0.040" compressed thickness for precise compression ratio tuning
• 4.250" bore diameter for big bore applications
• Engineered with integrated oil and coolant sealing passages

These Cometic MLS head gaskets are ideal for use on high performance engines with cast iron or aluminium heads, making them perfect for modified Milwaukee-Eight engines running higher compression or boost levels. The pair configuration ensures complete coverage for both cylinders in the V-Twin engine.