Top SPELAB Deals & Price Drops for May 2026

Unlock the true potential of your Duramax with the SPELAB high-performance racing exhaust manifold. Engineered for the 2001 to 2016 LB7, LLY, LBZ, LMM, and LML 6.6L engines, this upgrade is a cornerstone for serious performance builds. Visit SPELAB Auto Parts at spelabautoparts.com for the components that transform your truck. Crafted from heavy-duty, heat-resistant cast iron, this manifold is built to endure the extreme temperatures and pressures of high-boost applications. It provides a far more robust and free-flowing alternative to the restrictive factory unit, setting the stage for significant power gains. The core benefit is dramatically improved exhaust flow. The optimized internal runners minimize backpressure, allowing spent gases to exit each cylinder with greater efficiency. This directly translates to quicker turbocharger spool, delivering boost faster and improving throttle response across the power band. By channeling exhaust energy more effectively to the turbine, you will experience enhanced engine breathing and overall efficiency. This efficient flow pathway also helps manage exhaust gas temperatures, reducing thermal stress on your turbo and supporting longer component life in demanding conditions. This manifold is the ideal foundation for trucks with upgraded turbos, high-flow downpipes, or EGR-deleted race setups. It is designed specifically for performance and off-road applications where maximizing flow is critical for competitive advantage. Please note this component is intended for 2WD models and is configured for race-use applications, often requiring EGR removal. While it can physically fit a stock turbo, pairing it with other performance modifications is recommended to fully realize its benefits. SPELAB is committed to your satisfaction with fast shipping and a straightforward 14-day return policy. Invest in proven performance engineering. Upgrade to the SPELAB racing exhaust manifold and feel the difference in power and response.