Skip to product information
2015.5-2016 Duramax 4" Downpipe Back Exhaust w /  Muffler (431018 / 432018)

Mel's Manufacturing

2015.5-2016 Duramax 4" Downpipe Back Exhaust w / Muffler (431018 / 432018)

$1,030.00 CAD

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

Description
Description

Fits

Year Make Engine
2015.5-2016
GM LML 6.6L Duramax & 3-Bolt flange at Downpipe


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

The 431018/432018 by Mel's Manufacturing is a 4" Downpipe Back Exhaust System for the 2015.6-2016 LML. This kit allows you to drop out your full OE exhaust system and replace it with a high-flow street kit. 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. This kit includes Mel's Manufacturings High Flow Muffler which is a perfect setup for street driven trucks. This exhaust system not only looks and sounds great, but will improve your mileage, throttle response, torque, and flow while lowering EGT's in your LML.
Part Number: 431018/432018
Features
  • 4" Downpipe Back Single Exhaust system
  • OEM Style 3-Bolt Flange
  • High Flow Muffler Included
  • Aluminized or Stainless Steel
  • Single Side Exit
  • Easy Install - Mounts to OE Hangers
Notes
  • Some older Duramax trucks have a V-Band Style Clamp rather than the 3-bolt flange. This kit ONLY will work with the 3-Bolt Flange Style off the turbo direct pipe
Compatible trucks
  • Duramax 2011-2016
Shipping info

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.

Disclaimer & warranty

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.

Contact page link

Recommended products

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

You may also like...

Diesel tuning services for your truck

From custom tuning to in-shop and mobile installs, every service is handled personally to make your truck run better and more reliably.