PPE High Flow Exhaust Manifolds & Up Pipes For 11-16 LML Duramax

50 States Emissions Legal (E.O. D-701-19)

PPE’s Manifolds and Up-Pipes are designed to maximize power and flow characteristics.

The Up-Pipe bellows are internally-sleeved, made from aircraft-grade 304 stainless steel and designed with an increased inner diameter for higher flow. The entire Manifold and Up-Pipe exhaust system is designed to lower exhaust gas temperatures (EGTs) and accelerate turbo spool-up while increasing power, fuel economy and maintaining reliability.

Kit comes complete with two PPE manifolds, two PPE up-pipes, a PPE down pipe support bracket, PPE 301 stainless steel manifold gaskets and up-pipe gaskets.

Note: LML model requires modification on upper control arm bushing heat shield.

Features:

• Significant reduction in exhaust back-pressure
• Cast hi-sil moly iron high-flow manifold construction
• Up-Pipes have free-flowing stainless steel inner liner bellows
• Up-Pipes made from stainless steel 11-gauge .120-inch wall, with a 2-inch outside diameter
• Built in bosses, pre-drilled and tapped 1/8” NPT for EGT gauge sensor
• Kit includes driver and passenger manifolds, manifold bolts, up-pipes, gaskets and down pipe support bracket