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2020-2025 Duramax 4" Downpipe Back Exhaust w/ Muffler (431027 / 432027)
Description
Fits
| Year | Make | Model |
| 2020-2025 |
GMC | 6.6L Duramax w/ 4-Bolt Flange |
Mel's Manufacturing Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.
The 431027 / 432027 is a 4" Downpipe Back Exhaust System by Mel's Manufacturing for the 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: 431027 / 432027
Features
- 4" Down Pipe Back Exhaust
- OEM Style 4-Bolt Flange
- Includes High Flow Muffler
- Increased Torque & Fuel Mileage
- Aluminized or T409 Stainless Steel
- Easy Installation
Notes
- These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe!
Select Material
From $284.90
Original: $814.00
-65%2020-2025 Duramax 4" Downpipe Back Exhaust w/ Muffler (431027 / 432027)—
$814.00
$284.90Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Description
Fits
| Year | Make | Model |
| 2020-2025 |
GMC | 6.6L Duramax w/ 4-Bolt Flange |
Mel's Manufacturing Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.
The 431027 / 432027 is a 4" Downpipe Back Exhaust System by Mel's Manufacturing for the 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: 431027 / 432027
Features
- 4" Down Pipe Back Exhaust
- OEM Style 4-Bolt Flange
- Includes High Flow Muffler
- Increased Torque & Fuel Mileage
- Aluminized or T409 Stainless Steel
- Easy Installation
Notes
- These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe!
