Cometic C5889-045 GM MLS Cylinder Head Gasket Bore - LS7 Gen-4 4.150 045

The Cometic C5889-045 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM LS7 Gen-4 small block V8 engines with aftermarket sleeves. This precision gasket features a 4.150-inch bore diameter and a compressed thickness of .045 inches, providing optimal sealing for high-performance applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior durability and heat resistance
• 4.150-inch bore diameter accommodates LS7 cylinder dimensions
• .045-inch compressed thickness for precise compression control
• Designed specifically for GM LS7 Gen-4 small block V8 engines
• Engineered for use with aftermarket sleeves only
• Advanced embossment technology ensures maximum seal around combustion chamber and coolant passages

Cometic MLS gaskets utilize multiple layers of stainless steel with unique coatings to provide exceptional sealing under extreme cylinder pressures and temperatures. The embossed layers create a superior seal while accommodating minor surface imperfections, making this gasket ideal for both street performance and racing applications. This gasket is specifically designed for aftermarket sleeved blocks and should not be used with factory cylinder bores.