SKU: 19365408780

2001-2004 GM HD High-Flow Exhaust Manifolds and Up-Pipes Kits (116111000)

Sale price$583.20 Regular price$648.00
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Description

2001-2004 GM HD High-Flow Exhaust Manifolds and Up-Pipes Kits (116111000)Description 50 States Emissions Legal (E. O. D 701 34). GM 6. 6L Duramax High Flow Exhaust Manifolds and Up Pipes Kits PPE High Flow Manifolds are made from cast, high sil moly. The PPE Up Pipe bellows are internally sleeved, made from aircraft grade 304 stainless steel, and designed with increased inner diameter for higher flow. The entire Manifold and Up Pipe exhaust system are designed to maximize power and flow characteristics, lower exhaust gas

Description

50 States Emissions Legal (E.O. D-701-34). GM 6.6L Duramax High-Flow Exhaust Manifolds and Up-Pipes Kits

PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow.

The entire Manifold and Up-Pipe exhaust system are designed to maximize power and flow characteristics, lower exhaust gas temperatures (EGTs) and accelerate turbo spool-up while increasing power, fuel economy, and maintaining reliability.

High-Flow Exhaust Manifolds
Ceramic coating is available as an option for High-Flow Exhaust Manifolds.

Ceramic coating was pioneered by the military and defense industries. Now considered a standard in high-performance applications like Formula 1 and military jet aircraft. This same process is available to you - today.

The Ceramic-Coating option enhances the existing benefits of the PPE Manifolds and Up-Pipes Kit which is specifically designed to maximize power and flow characteristics. Ceramic coating creates a thermal barrier and doesn’t absorb heat as quickly as raw metal.

This reduces the thermal cycle and surface temperature. The ceramic coating promotes even greater flow, which means lower exhaust gas temperatures (EGTs). Ceramic coating also offers long-lasting protection against moisture, road salts, oil, fuel, and other corrosive chemicals. Plus, ceramic coating keeps your PPE Manifolds looking great - for a long, long time.

304 Stainless Steel Up-Pipes Kit
Choose the Ceramic Coating Option added to your PPE Manifolds and upgrade your GM 6.6L Duramax with the superior combination of PPE Manifolds with 304 Stainless Steel Up-Pipes Kit.

Complete your upgrade with a PPE Stainless 3 Inch, 304 Steel Down Pipe.

LML model requires modification on upper control arm bushing heat shield.
Up-Pipe configuration may vary depending on your model.

Important: The factory downpipe (2001-2004 LB7 only) does not fit aftermarket manifolds and up-pipes.

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
Notes

Note: PPE LB7 Down Pipe is required for the installation of this kit. The stock down pipe is not compatible with this kit. Complete your upgrade with a PPE 3-Inch 304 Stainless Steel Down Pipe.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 19365408780

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★★★★★ 1
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Reviewed in the United States on November 15, 2025
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Dave Kulina
Fort Morgan, US
★★★★★ 5
Works great
I added extra batteries to run a truck camper without killing my main battery and this works great. Simple to install and i have no had any problems in the pay few months and i use it every single day
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Reviewed in the United States on April 18, 2021
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Amazon Customer
Houston, US
★★★★★ 5
Installed in my RV.
This product works well. It is somewhat difficult to mount. The contact points are a little too close together. These deficiencies are understandable given its low cost and small size.
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Reviewed in the United States on January 18, 2021
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★★★★★ 5
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Reviewed in the United States on March 23, 2026
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Alexandria, US
★★★★★ 5
Good stuff.
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