2011-2015.5 6.6L Duramax LML 4" DPF & CAT Delete Pipe & EGR Cooler Delete Kit

Engineered with a 4-inch pipe diameter to maintain ideal exhaust gas velocity for faster turbocharger spool-up, crisp throttle response, and minimal cab drone.

Replaces the heavy, restrictive DPF canister with a smooth 4-inch race pipe to eliminate primary exhaust backpressure, lower Exhaust Gas Temperatures (EGTs), and stop fuel-draining active regenerations.

Completely removes the factory EGR cooler and valve components, preventing abrasive soot from choking intake valves and eliminating internal coolant leak risks.

Includes precision V-clamp flange geometry engineered specifically for the downpipe connection layout on early-build LML trucks.

Fit: 2011-2015.5 6.6L Silverado & Sierra Duramax 2500HD/3500HD LML engine with a V-Band Clamp (Does NOT fit 2015.5-2016 models equipped with the 3-bolt flange; please physically inspect underneath your truck to verify your turbo discharge style before purchasing).