2011-2015 Duramax 4" Cat Back Exhaust System w / Muffler (431013 / 432013)

Flo-Pro Part Number: 431013 Mft Part Number: 860-431013

$850.00 CAD

Material

Aluminized Steel Stainless Steel

Notices

We are unable to ship this product to P.O. boxes. Learn more

These cannot be shipped to the USA. Learn More

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Truck Fitment

Description

Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.

The 431013 & 432013 by Flo-Pro is a 4" Cat-Back Exhaust System for the 2011-2015 LML. It allows you to drop your restrictive OE exhaust system and replace it with a high-flow exhaust system that utilizes a performance muffler. Just like all of Flo-Pro 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. It not only sounds great but will lower your EGT's, increase mileage, and increase torque in your 6.6L!

Part Number: 431013 & 432013

Features

4" Cat-Back Exhaust
Increased Torque & Fuel Mileage
OEM Style 4-Bolt Flange
Aluminized or Stainless Steel
Single Rear Exit
Includes Muffler

Stainless vs Aluminized

Aluminized steel is the budget-friendly choice. It has a protective coating that holds up well, but once that coating wears it will eventually rust through, especially in salted winter climates. The stainless option is T409 stainless, an automotive-grade steel built to resist rot, and it will typically outlast the truck. T409 is not polished show-grade stainless, so light surface rust or discoloration can still show up over time. That is cosmetic only and won't affect performance or service life.