Cometic C4393-051 BMW MLS Cylinder Head Gasket Bore - M20B20 81mm

The Cometic C4393-051 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket specifically designed for BMW M20B20 engines. This gasket features an 81mm bore diameter and .051" compressed thickness, providing a reliable seal between the cylinder head and engine block.

Key Features:

• Multi-Layer Steel construction for superior durability and heat resistance
• 81mm bore diameter engineered for M20B20 engine specifications
• .051" (1.3mm) compressed thickness for precise compression ratio control
• Advanced embossment technology ensures even clamping pressure distribution
• Resistant to combustion gases, coolant, and oil
• Designed for both stock and performance applications

Cometic's MLS gaskets utilize multiple layers of stainless steel with specialized coatings to provide exceptional sealing capabilities under extreme temperatures and pressures. The embossed layers create a micro-seal that adapts to minor surface imperfections while maintaining consistent compression across the entire sealing surface. Ideal for engine rebuilds, performance upgrades, or replacement of failed OEM gaskets on BMW M20B20 inline-six engines commonly found in 1980s and early 1990s BMW 5-series and 3-series models.