Cometic H1631SPK040S MLS Head Gasket - 040 Inch

The Cometic H1631SPK040S is a high-performance multi-layer steel (MLS) head gasket engineered for demanding racing and street applications. Designed with a .040 inch compressed thickness, this gasket provides superior sealing and reliability for modified engines requiring precise bore sealing and combustion chamber sealing.

Multi-Layer Steel (MLS) Construction:

• Three-layer stainless steel design provides exceptional strength and rebound characteristics
• Outer layers feature embossed surfaces with Viton fluoroelastomer coating on both sides for superior sealing
• Viton coating withstands extreme temperatures up to 250°C (482°F) and resists coolants, oils, and corrosive fluids
• Center shim layer of uncoated stainless steel allows for precise thickness control
• No re-torque required after installation

Performance Benefits:

• Ideal for aluminum heads on cast iron blocks or aluminum-to-aluminum applications
• Withstands shearing forces created by dissimilar metal expansion rates
• Promotes even torque load distribution across the sealing surface
• Reduces bore distortion for improved ring seal and power output
• Superior corrosion resistance compared to composite gaskets

Cometic gaskets are manufactured to exacting tolerances to meet the specific requirements of performance enthusiasts and professional engine builders who demand reliable, repeatable sealing in high-stress environments.