Cometic C4475-070 MLS Cylinder Head Gasket BMW Engines Bore - M30 88mm

The Cometic C4475-070 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for BMW M30 series engines, including the M30B25V, M30B25, M30B28V, and M30B28 variants. This gasket features an 88mm bore diameter and a compressed thickness of .070 inches (1.78mm), making it ideal for stock and mildly modified applications.

Key Features:

• Multi-Layer Steel construction for superior sealing and durability
• 88mm bore diameter designed for M30 engine specifications
• .070" compressed thickness for precise compression ratio control
• Compatible with M30B25V, M30B25, M30B28V, and M30B28 engine codes
• Engineered to handle thermal expansion and contraction
• Embossed stainless steel layers with elastomeric coating

Cometic MLS gaskets are constructed from multiple layers of stainless steel with precision-cut sealing beads that compress and expand to maintain constant pressure across the gasket surface. This design provides exceptional resistance to blow-out and combustion gas leakage, even under demanding conditions. The gasket's construction accommodates minor surface imperfections while maintaining proper sealing around combustion chambers, coolant passages, and oil galleries.

This gasket is compatible with BMW vehicles equipped with M30 inline-six engines, commonly found in E12, E23, E24, E28, and E30 chassis from the 1970s through early 1990s. Proper surface preparation and torque specifications are essential for optimal performance and longevity.