JX Precision - diesel parts picked by a guy who wrenches on his own Duramax. Priced in CAD. Shop all

Pick your truck and year, and we'll show the parts listed for it. Shop by truck
1 2

2017-2026 Duramax 4" SS Cat & DPF Delete Pipe - No Muffler (DDC-3GM17)

Dirty Diesel Customs
$610.00 CAD

Description

Note: Direct bolt-on for Crew Cab Short Box; other configurations may need modifications. These kits will only fit models equipped with the OEM-style 4-bolt flange off the turbo direct pipe!

The DDC-3GM17 by Dirty Diesel Customs is a CAT & DPF Delete Kit designed for 2017-2026 L5P 6.6L Duramax trucks. This high-performance 4" piping kit replaces stock components for improved fuel mileage, increased torque, and an aggressive, commanding exhaust note. Built for reliability and perfect fitment, it’s the ultimate upgrade for diesel performance enthusiasts.

Why Shop Dirty Exhausts?
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems that meet our strict standards for durability and flow. Every kit is vetted for a precision, bolt-on fit, ensuring you get a high-performance system that sounds as good as it performs, without the headache of poor fitment or subpar materials.

Part Number: DDC-3GM17

Features
  • 4" CAT & DPF Race Pipe
  • OEM-Style 4-Bolt Flange
  • Straight Pipe, No Muffler
  • No Sensor Bungs
  • Boosts Torque & Fuel Mileage
  • T409 Stainless Steel Construction
  • Easy Bolt-On Installation
  • Clamp Torque: 50 ft-lbs

Includes
  • (1) 4" T409 Stainless Steel CAT & DPF Delete Pipe
  • (1) Set of Heavy-Duty Installation Clamps

OEM Part Numbers

GM 85165535 (superseded 84614676)

Vehicle Fitment - Part No: DDC-3GM17

CHEVROLET

2017-2026 Chevrolet Duramax

GMC

2017-2026 GMC Duramax

You may also like

  • FITMENT BY TRUCK

    Every part listed by truck and model year.

  • RUN BY A DIESEL GUY

    Jaxon builds his own Duramax trucks. LLY and LBZ are his sweet spot.

  • CANADIAN. EH?

    Based in Williams Lake, BC. Prices in Canadian dollars.
Back to top