Watch in action

Superior Sealing for High-Performance GM LS Engines

The Cometic GM LS1 4.100 inch Bore .040 inch MLS-5 Head Gasket is the ultimate choice for engine builders who refuse to compromise on quality. Designed for the high-performance demands of GM LS engines, this gasket utilizes a sophisticated multi-layer stainless steel (MLS) construction to provide maximum sealing performance under extreme pressure and heat.

Built for Resilience

Cometic uses stainless steel for its superior strength, corrosion resistance, and ability to rebound after compression. The outer layers are embossed and coated with a high-temperature Viton rubber material. This coating is specifically engineered to handle harsh sealing environments, varying load conditions, and different surface finishes, remaining stable up to 250°C (482°F).

• Bore Size: 4.100 inches
• Compressed Thickness: .040 inches
• Construction: 3-5 Layers of Stainless Steel
• Coating: Viton rubber for superior sealing
• Compatibility: Fits a wide range of GM LS-based vehicles
• Performance: Ideal for high-output and forced induction builds

Whether you are performing a routine engine rebuild or a full-scale performance upgrade, this gasket ensures your engine maintains optimal compression and reliability. With its ability to handle the shearing forces between different materials, it is the perfect component for your next build. Find the best parts for your engine at GGCRACING.