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Pacific Performance Engineering

Three-Inch 304 Stainless Steel High-Flow Down Pipe - 2017-2020+ GM 6.6L Duramax (L5P)

$219.99 $199.56 Save $20.43

SKU: P00X 117000800

In Stock
In Stock
Ships by Jun 15
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

The Pacific Performance Engineering 117000800 is a 3.5-inch downpipe designed for GM 6.6L Duramax engines. It features durable 304 stainless steel construction with TIG-welded flanges for reliable connections. This downpipe replaces the restrictive, oval-shaped stock unit with a smooth, round design to improve exhaust flow and turbo efficiency.

It includes a woven titanium heat sleeve for added engine bay protection and retains the factory sensor port, ensuring compatibility with OEM systems. This component is built for long-term durability and performance.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandPacific Performance Engineering
Part NumberP00X 117000800

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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