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2017-2019 Duramax 4" Downpipe Back Exhaust w/ Muffler (431021 / 432021)
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2017-2019 Duramax 4" Downpipe Back Exhaust w/ Muffler (431021 / 432021)
Regular price
$1,020.00 CAD
Unit price
Purchase to earn 1020 Dirty Dollars Learn More
Description
Description
Note: & 4 Bolt Flange
Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.
The 431021 / 432021 is a 4" Downpipe Back Exhaust System by Flo-Pro 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 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. You'll notice fuel mileage improvement, increased torque, and you'll have a much better sounding 6.6L!
Part Number: 431021 / 432021
Features
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
Stainless vs Aluminized
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.
Notes
Notes
- These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe!
Questions and Answers
Questions and Answers
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2017-2019 Duramax 4" Downpipe Back Exhaust w/ Muffler (431021 / 432021)
