Cometic C4318-098 MLS Cylinder Head Gasket for Nissan RB25DE/RB25DET 87mm Bore

The Cometic C4318-098 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Nissan RB25DE and RB25DET inline-six engines. Featuring an 87mm bore diameter and .098-inch (2.5mm) compressed thickness, this gasket provides exceptional sealing performance for both stock and modified applications.

Key Features:

• Multi-Layer Steel (MLS) construction with multiple layers of stainless steel for superior strength and durability
• 87mm bore diameter optimized for RB25 cylinder dimensions
• .098-inch compressed thickness for precise compression ratio tuning
• Advanced coating technology ensures optimal sealing under extreme cylinder pressures
• Handles higher boost levels and increased combustion pressures compared to composite gaskets
• Requires proper surface preparation with RA finish between 50-60 for optimal sealing
• Reusable design when removed carefully from properly prepared surfaces

Cometic MLS gaskets are the preferred choice for performance and racing applications, offering exceptional resistance to blowout and the ability to withstand thermal expansion and contraction cycles. This gasket is ideal for turbocharged RB25DET engines running increased boost pressure or naturally aspirated builds requiring precise head gasket thickness selection.