Cometic C4615-045 MLS Cylinder Head Gasket for Nissan QR25DE 90mm Bore

The Cometic C4615-045 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for 2002-2006 Nissan vehicles equipped with the QR25DE engine. This precision-manufactured gasket features a .045" (1.14mm) compressed thickness and a 90mm bore diameter, designed to provide superior sealing performance in both stock and modified engine applications.

Key Specifications:

• Multi-Layer Steel (MLS) construction for maximum durability and heat resistance
• Compressed thickness: .045 inches (1.14mm)
• Bore diameter: 90mm
• Application: Nissan QR25DE engines (2002-2006)
• Compatible with Altima, Sentra SE-R, and X-Trail models
• NOT compatible with Nissan Frontier applications

Multi-Layer Steel Technology:

• Multiple layers of stainless steel provide superior sealing under extreme conditions
• Embossed active sealing beads around combustion chambers and fluid passages
• Resists blowout and maintains seal integrity under high cylinder pressures
• Ideal for turbocharged, supercharged, and high-compression builds
• Reusable design allows for multiple installations when properly handled

Cometic MLS gaskets are the choice of professional engine builders and performance enthusiasts worldwide. The .045" thickness makes this gasket suitable for applications requiring precise compression ratio control or for use with deck surfaces that have been resurfaced. Always verify head and block surface finish meets manufacturer specifications (typically 50 RA or smoother) for optimal MLS gasket performance.