2017-2019 Duramax 4" Downpipe Back Exhaust w/ Muffler (431021 / 432021)

$1,020.00 CAD

Performance part for diesel trucks. Please confirm compatibility before purchasing.

Description

Fits

Year	Make	Engine
2017-2019	GM	L5P 6.6L Duramax

Note: & 4 Bolt Flange

Mel's Manufacturing Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.

The 431021 / 432021 is a 4" Downpipe Back Exhaust System by Mel's Manufacturing for the 2017-2019 L5P Duramax. It's the perfect kit if you're looking to remove your stock components and replace it with high-performance & high-flow 4" piping from your downpipe back! Just like all of Mel's Manufacturings Exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you cruise through the installation process. You'll notice fuel mileage improvement, increased torque, and you'll have a much better sounding 6.6L!

Part Number: 431021 / 432021

Features

4" Down Pipe Back Exhaust
OEM Style 4-Bolt Flange
Includes High Flow Muffler
Increased Torque & Fuel Mileage
Aluminized or Stainless Steel
Easy Installation

Notes

These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe!

Duramax 2017-2019

Please refer to our Shipping policy. As a general rule, we ship out all orders in 24-72 hours using services like Purolator and other, and always provide you with a tracking number.

Please refer to our Disclaimer and Warranty pages.

Planning a larger purchase? Feel free to reach out to discuss a possible discount.

If you have any questions or need help with your order, you’re always welcome to contact us directly.

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Grand opening giveaway is ON 🔥

$1000 CAD and an S&B intake up for grabs! Be one of the first 10 to spend $1,000 CAD in a single order and you’re entered to win $1,000 back. For all orders: leave us a review by March 31 for a shot at an S&B intake. Intake draw happens April 14.

More details here