2001-2025 Duramax High Flow Exhaust Manifold W/ Up-Pipe Kit (116111035)

Description

Fits

Year	Make	Model	Engine
2001-2024	GMC/Chevrolet	HD	6.6L Duramax

Designed to increase flow, lower EGT's, accelerate turbo spool, and maximize power all while maintaining reliability.

The PPE High-Flow Manifold is crafted from top-quality high-sil moly cast iron. The PPE Up-Pipe bellows are internally sleeved and are made from premium aircraft-grade 304 stainless steel, designed with increased inner diameter and greater flow capacity. This exhaust system, including the Manifold and Up-Pipe, is engineered to optimize power and flow, reduce EGTs, and boost turbo spool-up, ultimately increasing performance, fuel efficiency, and overall dependability.

Part Number: 116111035

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
• Up-Pipe bellows are internally-sleeved, made from aircraft-grade 304 stainless steel

Installation

• 2001-2016 High-Flow Exhaust Manifolds and Up-pipes Kits
• 2017-2023 High-Flow Exhaust Manifolds and Up-pipes Kits

Notes

• LML model requires modification on upper control arm bushing heat shield.
  
• Up-Pipe configuration may vary depending on your model.
• The 2007.5-2010 LMM Duramax requires PPE coolant reroute pipe (116111810)