Michigan Motorsports LS4 Oil Pan Gasket | Like GM #12643081 | for 5.3L LS4 Front-Wheel Drive Engines | Fits 2005-2009 Impala SS, Monte Carlo SS, GXP, Lacrosse Super

Seal your LS4-powered ride with confidence using the Genuine GM 12643081 Oil Pan Gasket—engineered for exact fitment and superior reliability. Designed specifically for the 5.3L LS4 front-wheel drive engine found in select 2005–2009 GM vehicles, this gasket is the go-to choice for factory-quality sealing during oil pan replacements, engine rebuilds, or leak prevention. Featuring a raised stamped oil deflector tab, this gasket is unique to the LS4’s FWD layout, offering proper internal oil channeling and sealing against high-pressure environments. Built to OEM specifications and backed by GM engineering, it's an essential component for any serious LS4 build or maintenance job. Whether you're freshening up a tired Impala SS or replacing a leaking pan on your Monte Carlo SS, this gasket ensures a leak-free install you can trust. No drilling, trimming, or RTV needed—just bolt it on and go.

• Genuine OEM GM Part #12643081 – Manufactured by GM to exact factory specs for long-lasting durability, performance, and sealing reliability on 5.3L LS4 engines.
• LS4-Specific Raised Deflector Tab – Features an integrated stamped oil control tab that ensures proper flow and deflection in LS4 front-wheel-drive oiling systems.
• Engineered for 5.3L LS4 FWD Platforms – Designed to fit GM’s unique FWD LS4 block found in 2005–2009 Impala SS, Monte Carlo SS, Grand Prix GXP, and Buick Lacrosse Super.
• Leak-Free Performance in OEM & Performance Builds – Provides an airtight seal during oil pan installation, even under demanding driving conditions or boosted setups.
• Easy Direct-Fit Installation – No cutting or custom fitting needed; bolts up cleanly with your factory LS4 oil pan and hardware.