Cometic C4239-045 MLS Cylinder Head Gasket for Honda B18A1/B18B1 81.5mm Bore

The Cometic C4239-045 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Honda B18A1 and B18B1 engines. This high-performance gasket features an 81.5mm bore diameter and a compressed thickness of .045 inches (1.14mm), making it ideal for stock and mildly modified engine applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior durability and sealing performance
• 81.5mm bore diameter for precise fitment on B18A1/B18B1 cylinder heads
• .045" compressed thickness maintains proper compression ratio
• Advanced coating technology ensures optimal sealing under high heat and pressure
• Allows for controlled micro-movement between head and block while maintaining seal integrity
• Resists corrosion and withstands extreme cylinder pressures

Cometic MLS gaskets are manufactured using multiple layers of stainless steel with specialized coatings, providing exceptional recovery and conformability. This design accommodates the thermal expansion differences between the cylinder head and engine block, reducing the risk of gasket failure even in demanding performance conditions. The gasket's construction eliminates the need for additional sealants during installation.

This gasket is compatible with Honda B18A1 and B18B1 engines commonly found in 1990-2001 Acura Integra LS, RS, and GS models, as well as various JDM applications.