Cometic C5921-051 GM LSJ Ecotec MLS Cylinder Head Gasket Bore - Gen-1 87mm

The Cometic C5921-051 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for GM LSJ Gen-1 Ecotec engines. This performance gasket features a .051-inch compressed thickness and an 87mm bore diameter, providing a reliable seal for high-performance and turbocharged applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• .051-inch (1.30mm) compressed thickness for optimal compression ratio tuning
• 87mm bore diameter designed for GM LSJ Ecotec engines
• Engineered for stock and modified forced induction applications
• Embossed stainless steel layers with Viton rubber coating
• Resists extreme temperatures and combustion pressures
• Direct replacement for OEM gasket with improved performance characteristics

Cometic's MLS gaskets feature multiple layers of stainless steel with embossments that provide the optimal seal for high-performance engines. The advanced materials and engineering make this gasket ideal for turbocharged GM Ecotec applications including Cobalt SS, Saturn Ion Redline, and other LSJ-powered vehicles. This gasket allows for precise control of compression ratios when building or rebuilding performance engines.