Cometic C4394-027 MLS Cylinder Head Gasket for BMW M20B25/M20B27 85mm Bore

The Cometic C4394-027 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for BMW M20B25 and M20B27 inline-six engines. This gasket features an 85mm bore diameter and a compressed thickness of .027 inches, providing optimal sealing performance for both stock and modified applications.

Key Features:

• Multi-Layer Steel construction provides superior strength and durability compared to traditional composite gaskets
• 85mm bore diameter engineered for precise fitment on BMW M20 series engines
• .027-inch compressed thickness allows for fine-tuning compression ratios
• Embossed stainless steel layers with elastomeric coating ensure consistent sealing under extreme temperatures and pressures
• Designed to withstand high cylinder pressures in turbocharged, supercharged, and naturally aspirated applications
• Compatible with BMW M20B25 (2.5L) and M20B27 (2.7L) six-cylinder engines found in E28, E30, and E34 chassis

Cometic MLS gaskets are renowned in the performance community for their ability to handle severe operating conditions while maintaining a reliable seal. The multiple layers of stainless steel compress evenly across the sealing surface, accommodating minor surface imperfections and thermal expansion that occurs during engine operation.