Cometic C4252-027 MLS Cylinder Head Gasket Bore Honda - 87mm 0.027 H22A4/H22A7

The Cometic C4252-027 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Honda H22A4 and H22A7 engines. With an 87mm bore size and 0.027-inch compressed thickness, this gasket delivers exceptional sealing performance for high-output engines without requiring additional sealants.

Advanced MLS Construction: This gasket features a three-layer design comprised of multiple embossed layers of stainless steel that provide superior strength, excellent rebound characteristics, and enhanced corrosion resistance. The outer layers are embossed and coated on both sides with Viton, a fluoroelastomer rubber material that withstands temperatures up to 482°F (250°C). The center layer is uncoated stainless steel, allowing for precise thickness variation to meet exact compression requirements.

Key Features:

• 87mm round bore diameter for H22A4 and H22A7 applications
• 0.027-inch compressed operating thickness
• 3-layer MLS construction for maximum durability
• Viton-coated outer layers for superior heat and chemical resistance
• No sealants required for installation
• Ideal for both aluminum-to-aluminum and aluminum-to-cast iron block applications
• Embossed design promotes even clamping load and reduces bore distortion
• No re-torque necessary after installation

Performance Benefits: The multi-layer steel design allows this gasket to withstand the shearing forces created when different materials expand at different rates, making it ideal for high-performance builds and forced induction applications. The Viton coating ensures reliable sealing across various load conditions and surface finishes, while the embossed layers compress evenly to minimize cylinder bore distortion.

Proudly manufactured in the USA using domestically-sourced materials, Cometic gaskets are trusted by professional engine builders and performance enthusiasts worldwide. This gasket is engineered to meet the demands of modern high-compression engines while providing long-lasting reliability.