Cometic C4393-095 BMW MLS Cylinder Head Gasket Bore - M20B20 81mm

The Cometic C4393-095 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for BMW M20B20 engines. This high-performance gasket features an 81mm bore diameter and .095" (2.4mm) compressed thickness, providing superior sealing and durability for both stock and modified applications.

Key Features:

• Multi-Layer Steel (MLS) construction for maximum reliability and strength
• 81mm bore diameter designed for BMW M20B20 engines
• .095" compressed gasket thickness
• Advanced embossment technology ensures even pressure distribution
• Stainless steel construction with multiple layers for superior sealing
• Resists corrosion and extreme temperatures
• Ideal for high-performance and racing applications

Cometic MLS gaskets are constructed from multiple layers of stainless steel, with each layer serving a specific purpose in the sealing process. The outer layers provide the sealing surface, while the inner layers act as a spring mechanism to maintain constant pressure across the head-to-block mating surface. This design accommodates minor surface imperfections and maintains seal integrity even under high cylinder pressures and temperatures.

This gasket is compatible with BMW M20B20 inline-six engines found in various BMW models from the 1980s. The precision-cut design ensures proper alignment of all critical sealing points including coolant passages, oil return passages, and combustion chambers.