Product Description
BTR Brian Tooley Racing LS Rear Engine Cover Gasket – Replaces GM 12639249 / 12633578
Fits 1997–2013 LS Engines | LS1 LS2 LS3 LS6 LM7 L33 L92 L99 LQ4 LQ9 L76 L96 LY6 & More
Upgrade or replace your factory rear engine cover gasket with this premium BTR / Brian Tooley Racing gasket, engineered to meet or exceed OEM sealing performance on all 1997–2013 LS-based engines. Designed for stock rebuilds, performance applications, and LS swap projects, this gasket ensures a long-lasting, leak-free seal between the rear cover and engine block. Compatible with both OEM and aftermarket rear covers, it delivers reliable oil control and proven durability for any LS build.
Key Features
- OEM Replacement: Direct-fit gasket replacing GM part numbers 12639249 and 12633578 for easy and accurate installation on all LS rear covers.
- Premium Construction: Manufactured from high-quality materials to ensure proper sealing, oil control, and long-term durability under demanding conditions.
- Versatile Compatibility: Works with both factory and aftermarket rear engine covers, making it ideal for rebuilds or custom LS swap setups.
- Perfect for Performance Builds: Trusted sealing performance for naturally aspirated, boosted, and high-horsepower LS applications.
- Wide Engine Coverage: Fits all Gen 3 & Gen 4 LS-based engines from 4.8L to 6.2L, including LM7, LS1, LS3, LQ4, L76, L96, and others.
Key Fitments
- Engines: LS1, LS2, LS3, LS6, LM7, L33, L92, L99, LQ4, LQ9, L76, L96, LC9, LY6, LMG, LH6, LH8, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L (1997–2013 LS platforms)
- Platforms: Buick Rainier (2004–2007); Cadillac CTS (2004–2015), Escalade (2002–2014); Chevrolet Avalanche (2002–2013), Camaro (1998–2015), Caprice (2011–2012), Cheyenne (2013), Colorado (2010–2012), Corvette (1997–2013), Express 1500–4500 (2003–2020), Impala (2006–2009), LCF (2016–2019), Monte Carlo (2007), Silverado 1500 (1999–2013), Silverado 2500/3500 (1999–2019), SSR (2003–2006), Suburban (2000–2014), Tahoe (2000–2014), Trailblazer (2003–2009); GMC Canyon (2009–2012), Envoy (2004–2009), Savana 1500–4500 (2003–2020), Sierra 1500 (1999–2014), Sierra 2500/3500 (2000–2018), Yukon (2000–2014), Yukon XL (2000–2013); Hummer H2 (2003–2009), H3/H3T (2008–2010); Isuzu NPR (2003–2016); Pontiac Firebird (1998–2002), G8 (2008–2009), Grand Prix (2006–2007), GTO (2004–2006); Saab 9-7X (2007–2009)
- Notes: Direct-fit replacement for GM 12639249 / 12633578; ideal for rebuilds, LS swaps, and performance engine builds requiring leak-free rear cover sealing.
