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High Flow Exhaust Manifolds with Up-Pipes

Manufactured by: Pacific Performance Engineering

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

PPE’s High-Flow Exhaust Manifolds and Up-Pipes have a 53% greater flow over stock and are 50 State emissions legal.

PPE Manifolds are made from high-quality cast iron and the Up Pipes are made from 11 gauge 304 stainless steel. The aircraft grade 304 stainless steel Up-Pipe bellows are high-flow, internally sleeved, and have an increased inner diameter.


Available for 2001-2015 Duramax equipped trucks. E.O No. D-701-6

NOTICE: LMM trucks require heater modifications on driver's side. Call for details.


▪ Cast Hi-Sil Moly iron high-flow manifold construction

▪ Significant reduction in exhaust back pressure

▪ Free-flowing stainless steel inner liner bellows

▪ Stainless steel 11-gauge .120-inch wall diameter Up-Pipes

▪ Built in bosses, pre-drilled and tapped 1/8" NPT for EGT gauge

UPC Company Prefix: 81050502

UPC Code - 14: 00810505024834, 00810505024872, 00810505024889, 00810505024896, 00810505024902

UPC Code - 12: 810505024834, 810505024872, 810505024889, 810505024896, 810505024902

Kit comes complete with two PPE Manifolds, two PPE Up-Pipes, a PPE Down Pipe Support Bracket, PPE Stainless Steel Manifold Gaskets and Up-Pipe Gaskets.

Factory manufacturing process leaves the Up-Pipe bellows’ inside liner significantly undersized and deformed causing excessive restriction. PPE’s bellows are larger in diameter by 37% providing increased flow. 

Please call with additional questions and concerns.

* SHIPPING NOTE- All shipping is done thru UPS and requires a signature.

Delivery times vary due to credit card processing and UPS pick-up schedules: holidays and drop-offs. (This is not subject to the control of PPE.)

PPE continues to lead the way with 50 states legal environmentally friendly fuel efficient products.

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