Product Description
Cometic LS .040" MLS Head Gasket, 4.000" Bore, 4-Bolt
Fits 1997-Later GM LS-Based Gen 3 and Gen 4 Engines
The Cometic LS .040" MLS Head Gasket (4.000" Bore, 4-Bolt) is engineered for superior sealing performance and long-term durability in high-performance GM LS engines. Designed to handle the demands of naturally aspirated, boosted, and nitrous-assisted builds, this multi-layer steel (MLS) gasket offers exceptional strength and consistency under extreme temperatures and cylinder pressures.
Constructed from multiple layers of premium stainless steel, the gasket resists corrosion and rebounds under pressure for a reliable seal. Each outer layer features a heat-resistant Viton coating that provides a secure seal between aluminum or cast iron surfaces — eliminating the need for additional sealants. Whether you’re rebuilding a stock LS or pushing the limits of performance, this Cometic MLS gasket delivers the quality and reliability you can trust.
Sold individually or as a pair, depending on your build needs.
Key Features:
- Designed for GM LS Gen 3/4 engines (1997 and later)
- Multi-Layer Steel (MLS) construction ensures maximum durability
- Stainless steel layers resist corrosion and rebound under pressure
- Outer Viton coating withstands heat up to 482°F (250°C) for superior sealing
- Compatible with both aluminum and cast iron heads
- No sealants or re-torquing required after installation
- Available individually or as a pair for complete cylinder head coverage
Specifications:
- Material: Multi-Layer Stainless Steel (MLS)
- Compressed Thickness: .040"
- Bore Size: 4.000"
- Number of Layers: 3
- Orientation: None (Universal for Left or Right Side)
