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TunerDepot

3.5" Down-pipe for GM Duramax L5P 6.6L

$357.50

SKU: EP-GM-L5P-DP

In Stock
In Stock
Ships by Jul 30
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30 Days Return
INSTALL DIFFICULTY
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Moderate — 2–4 hours

Description

The GM Duramax L5P 3.5" Down-pipe is a direct replacement for factory units on Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax L5P engine. It is constructed from 3.5-inch T409 stainless steel to improve exhaust flow and reduce backpressure. This downpipe facilitates complete elimination of the factory Diesel Oxidation Catalyst (DOC).

Fitment

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Specifications

BrandTunerDepot
Part NumberEP-GM-L5P-DP
CategoryExhaust

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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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