Cometic C4239-030 MLS Cylinder Head Gasket Honda Bore - B18A1/B18B1 81.5mm

The Cometic C4239-030 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Honda B18A1 and B18B1 engines. This precision gasket features an 81.5mm bore diameter and a .030" (0.76mm) compressed thickness, making it ideal for street performance builds and mild forced induction applications.

Key Features:

• Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme conditions
• 81.5mm bore diameter designed for Honda B18A1/B18B1 engine configurations
• .030" compressed thickness allows for precise compression ratio tuning
• Advanced coating technology ensures optimal sealing between cylinder head and block
• Exceeds OEM specifications for strength and heat resistance
• Eliminates gasket failure common with stock head gaskets in modified engines

Cometic MLS head gaskets utilize multiple layers of stainless steel with a unique coating that responds to flange pressure and extreme temperatures. This design allows the gasket to recover while resist corrosion, making it the preferred choice for performance engine builders working with Honda B-series engines. The .030" thickness provides flexibility for engine builders to fine-tune compression ratios when combined with decking or when using aftermarket pistons.