Cometic C4231-045 MLS Cylinder Head Gasket 81mm Bore .045" Thick Honda B-Series VTEC

The Cometic C4231-045 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered for Honda B-series VTEC engines including B16A2, B16A3, B17A1, B18C1, and B18C5. Designed for performance enthusiasts and high-output applications, this gasket features an 81mm bore diameter and .045" compressed thickness, making it ideal for fine-tuning compression ratios in both naturally aspirated and forced induction builds.

Key Features:

• Multi-Layer Steel construction with three layers of embossed stainless steel for superior strength and durability
• Viton rubber coating on outer layers provides heat resistance up to 482°F (250°C) and exceptional sealing performance
• 81mm bore diameter precisely machined for B-series VTEC applications
• .045" compressed operating thickness allows for compression ratio adjustment
• Compatible with both aluminum-to-aluminum and aluminum-to-cast iron block configurations
• Requires no additional sealants or re-torquing - install dry
• Resists bore distortion while withstanding extreme cylinder pressures and shearing forces
• Excellent rebound characteristics and corrosion resistance

Cometic MLS gaskets are manufactured in the USA and trusted by professional racing teams worldwide. The embossed stainless steel layers with proprietary high-temperature coating provide maximum sealing performance for high-output engines, whether on the street or track. This gasket is ideal for turbocharged, supercharged, or high-compression naturally aspirated builds where reliability and performance are critical.