Cometic C4323-045 Nissan MLS Cylinder Head Gasket Bore - RB30 87mm

The Cometic C4323-045 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Nissan RB30 inline-six engines. This precision gasket features an 87mm bore diameter and .045" (1.14mm) compressed thickness, making it ideal for high-performance street and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 87mm bore diameter designed for RB30 engine specifications
• .045" compressed thickness for optimal compression ratios
• Engineered to withstand extreme cylinder pressures in boosted applications
• Exceeds OEM gasket performance in high-heat, high-stress environments
• Accommodates thermal expansion and contraction during engine operation

Cometic MLS gaskets utilize multiple layers of stainless steel with advanced coating technology to provide maximum combustion sealing. The embossed design ensures proper load distribution across the cylinder head surface, while the material composition allows the gasket to recover and maintain seal integrity through repeated heat cycles. This gasket is the preferred choice for turbocharged and naturally aspirated RB30 builds requiring reliable head sealing under demanding conditions.