Product Description
Cometic LS .040" MLS Cylinder Head Gasket, 4.100" Bore
Fits 1997–Newer GM LS-Based Engines | Choose Quantity for Single (1) or Pair (2)
Built for high-performance LS applications, the Cometic .040" MLS Cylinder Head Gasket offers unmatched sealing strength, heat resistance, and long-term durability. Designed for Gen 3/4 GM LS engines, this gasket is constructed from multiple layers of stainless steel with a heat-resistant Viton coating—ensuring a perfect seal under extreme pressure and temperature. Ideal for boosted, naturally aspirated, or high-compression builds, no additional sealants are required for installation.
Key Features
- Premium Multi-Layer Steel (MLS) Design: Three-layer stainless steel construction delivers exceptional strength, sealing capability, and corrosion resistance.
- Precision Specs: 4.100" bore and .040" compressed thickness provide optimal fitment and combustion chamber sealing for LS performance engines.
- Viton Coating: Heat-resistant coating withstands up to 482°F (250°C), maintaining a reliable seal between aluminum or cast-iron surfaces.
- Direct-Fit Application: Designed specifically for GM LS Gen 3/4 engines—no orientation required and installs without additional sealants.
- Flexible Purchase Options: Available individually or as a pair for complete head gasket replacement during top-end rebuilds or upgrades.
Key Fitments
- Engines: LS1, LS2, LS3, LS6, LQ4, LQ9, LY6, L76, L77, L92, L94, L96, L99, LSA, and other GM Gen 3/4 LS-based V8 engines.
- Platforms:
Cadillac CTS (2004–2005), Escalade (2002–2014);
Chevrolet Avalanche (2002–2013), Camaro (1998–2015), Caprice (2011–2016), Colorado (2009–2012), Corvette (1997–2013), Express 1500 (2003–2012), Express 2500 (2003–2020), Express 3500 (2003–2020), Silverado 1500 (2000–2013), Silverado 2500 (1999–2019), Silverado 3500 (2001–2019), SS (2014–2017), SSR (2003–2006), Suburban 1500 (2000–2014), Suburban 2500 (2000–2011), Tahoe (2000–2014), Trailblazer (2003–2009);
GMC Canyon (2009–2012), Envoy (2004–2009), Savana 1500 (2003–2013), Savana 2500 (2003–2020), Savana 3500 (2003–2020), Sierra 1500 (1999–2013), Sierra 2500 (2000–2016), Sierra 3500 (2001–2018), Yukon (2000–2014), Yukon XL 1500 (2000–2014), Yukon XL 2500 (2000–2013);
Pontiac Firebird (1998–2002), GTO (2004–2006), G8 (2008–2009). - Notes: Sold individually or as a pair. Designed for LS Gen 3/4 engines only. Not intended for LS7 or LS9 applications. Ideal for naturally aspirated or forced-induction builds requiring precise combustion sealing.
