Product Description
Cometic LS .040" MLS Head Gasket, 4.030" Bore, 4-Bolt
Fits 1997-Later GM 6.0L Gen 3 & Gen 4 LS Engines | High-Performance Multi-Layer Steel Design
The Cometic LS .040" MLS Head Gasket (4.030" Bore, 4-Bolt) delivers superior durability and sealing performance for high-horsepower LS builds. Constructed from premium multi-layer stainless steel, this gasket is engineered to resist corrosion, maintain a precise seal under extreme cylinder pressure, and withstand the elevated heat of high-performance applications. Its Viton-coated outer layers provide a reliable seal between aluminum or cast iron surfaces without requiring additional sealants, ensuring maximum reliability and longevity.
Key Features
- Premium Multi-Layer Steel Construction: Built from multiple stainless steel layers for exceptional strength, resilience, and uniform sealing under extreme pressure.
- Viton-Coated Outer Layers: Provides heat resistance up to 482°F (250°C) and creates a superior seal between aluminum and cast iron surfaces—no sealant required.
- Precision Fitment: Designed specifically for 6.0L GM LS Gen 3/4 engines with a 4.030" bore and .040" compressed thickness for consistent cylinder sealing.
- High-Temperature & Pressure Durability: Engineered to perform under boosted, high-compression, and racing applications without gasket fatigue or failure.
- Sold Individually or as a Pair: Available for single gasket replacement or full engine rebuild applications.
Key Fitments
- Engine Applications: Fits 1997-later 6.0L Gen 3 and Gen 4 LS-based engines, including LS2, LQ4, LQ9, L76, LY6, L96, and similar 4-bolt head configurations.
- Compatible Platforms: Works with both car and truck LS applications—ideal for high-performance, street, or racing engines.
- Designed For: Builders seeking improved reliability, consistent cylinder sealing, and enhanced heat resistance in high-performance LS setups.
Specifications: 4.030" Bore | .040" Compressed Thickness | 3-Layer MLS | Viton-Coated | 4-Bolt Design.
Note: This gasket is sold individually but can also be purchased as a pair. Perfect for performance rebuilds, boosted setups, and LS engine swaps requiring dependable, high-quality sealing performance.
