Cometic C5489-053 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.100

The Cometic C5489-053 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for GM LS Gen III and Gen IV small block V8 engines, including the LS1, LS2, LS3, and LS6 variants. This gasket features a 4.100-inch bore diameter and a compressed thickness of .053 inches, making it ideal for both stock and performance applications.

Key Features:

• Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme cylinder pressures
• 4.100-inch bore diameter accommodates stock and slightly overbored LS engines
• .053-inch compressed thickness for precise compression ratio tuning
• Compatible with LS1, LS2, LS3, and LS6 Gen III/Gen IV small block V8 engines
• Stainless steel construction with advanced coating technology resists corrosion and provides optimal sealing
• Embossed sealing beads ensure consistent clamping pressure around cylinders and fluid passages
• Suitable for engines producing up to 1,500+ horsepower when properly installed

Cometic MLS gaskets are a preferred choice among engine builders and performance enthusiasts for their ability to withstand high combustion pressures, thermal cycling, and engine movement. The layered steel design allows for controlled micro-movement between layers while maintaining a positive seal, making these gaskets ideal for both naturally aspirated and forced induction applications.