Cometic C4293-040 BMW MLS Cylinder Head Gasket Bore - M10B18/M10B20 90mm

The Cometic C4293-040 is a high-performance multi-layer steel (MLS) cylinder head gasket engineered specifically for BMW M10B18 and M10B20 engines. This precision-manufactured gasket features a 90mm bore diameter and .040" (1.02mm) compressed thickness, providing an excellent sealing solution for both stock and modified applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 90mm bore diameter designed for BMW M10B18 and M10B20 engines
• .040" compressed thickness for optimal compression ratio control
• Engineered to withstand extreme cylinder pressures and temperatures
• Embossed stainless steel layers with Viton rubber coating for maximum sealing
• Ideal for turbocharged, supercharged, and high-compression applications

Cometic's MLS gaskets feature multiple layers of stainless steel with specialized coatings that adapt to sealing surface imperfections while maintaining structural integrity under extreme conditions. The .040" thickness makes this gasket suitable for engine builds requiring precise compression ratio adjustments or deck surface corrections.