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

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PPE High Flow Exhaust Manifolds with Up-Pipes

  • Brand: PPE
  • Product Code: 116111000
  • Availability: In Stock
  • $986.39

  • Ex Tax: $986.39