2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
2001-2024 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes ppepower
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2002-2004 (CA) GM 6.6L Duramax High-Flow 304 Stainless Steel Down Pipe

$284.00 In Stock Temporarily out-of-stock
45547050402035
PART NUMBER: 117000424 GTIN: 840171210293

OEM P/N REFERENCE: GM 97246408

Features

  • 304 Stainless steel construction for durability and corrosion resistance
  • Lower EGT, better turbo efficiency and response
  • TIG welded flanges for leak-free, robust connections
  • Smooth transitions and free-flowing design
  • Woven titanium heat sleeve
  • Lower down pipe gasket
  • Compatible with factory or PPE Up-Pipes

FREE SHIPPING FOR ORDERS OVER $199

3 YEAR LIMITED WARRANTY

30-DAY RETURNS

D-701-36

  • Description
  • Compatible Vehicles
  • RESOURCES

High-Flow 304 Stainless Steel Down Pipe for GM 6.6L Duramax

The factory downpipe is constructed from two pieces of formed sheet metal welded to an oval pipe. The factory design features a sharp, abrupt transition immediately after the turbine flange, which restricts exhaust flow and impedes performance.

Upgrade your LB7 with the PPE Free-Flow Downpipe and eliminate the rusted, restrictive factory design. Crafted from durable 304 stainless steel, this downpipe features a robust half-inch turbine flange, a CNC-machined lower flange, and smooth, optimized transitions for unobstructed exhaust flow. To further enhance performance, it comes with a woven titanium sleeve that effectively insulates heat, protecting the engine bay.

  • 5 stars: 5 (71%)
  • 4 stars: 2 (29%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.
J
Jac (United States)
Nice product

Very well constructed, fit like a glove.

L
Lawrence V. (United States)
Fast shipping great product

Fast shipping great product..super easy install..thank you PPE..

L
Lande (United States)
Upgraded down pipe

Part showed up earlier than expected and fit flawlessly great product! Thanks for making great products at a reasonable cost

J
Jordan P. (United States)
Works well good fit

Just FYI if you have deleted your 9th injector this downpipe comes with no plugs so you will need to buy an M20 1.5 plug for 9th injector hole

D
Donald D. (United States)
Gorgeous

It really was a shame hiding this behind the engine.. I will definitely be ordering the up pipes in the future!

M
Matthew P. (United States)
Down Pipe Review

The Product delivered fast and efficiently. The Down Pipe had tight fit but once you get it past the transmission dipstick the rest is easy. Everything connected how it should and I am extremely happy with the purchase. The only downside is that I could only get one side of the transmission dipstick tighten back up, but with the bigger size of the Down Pipe the dipstick is in there solid. I could have bent the bracket somewhere along the line during removal or installation. I would recommend this product to anyone wanting a after market Down Pipe for the LBZ Duramax.

T
Tony
Quality manufacturing

The cast and machined flanges are of quality I wouldn't want to hide under a clamp. They blend well with the pipe and would appear to have good flow characteristics. Everything fit right up as it should. I did end up needing to add a third hose clamp to the middle of the wrap to keep it from sliding down the pipe.

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