

2001-2007 Duramax 4" SS Downpipe Back Exhaust System - No Muffler (DDC-4GM01)
Description
Fits
| Year | Make | Model |
| 2001-2007 | Chevrolet/GMC | Duramax LB7, LLY, LBZ w/ 6.6L |
Note: Fits all wheelbases and cab configurations unless otherwise noted. This is a straight-pipe system with no muffler included.
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems that meet our strict standards for durability and flow. Every kit is vetted for a precision, bolt-on fit, ensuring you get a high-performance system that sounds as good as it performs, without the headache of poor fitment or subpar materials.
Features
- 4" Downpipe Back Exhaust
- Stainless Steel Construction
- Single Side Exit Design
- No Muffler Included
- Easy OE Hanger Installation
- Reinforced flanges
Includes
- (1) 4" Stainless Steel Downpipe Back Exhaust System
- Heavy-Duty Installation Clamps
- Pre-Weld Contour-Bent Hangers
Original: $583.64
-65%$583.64
$204.27Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Description
Fits
| Year | Make | Model |
| 2001-2007 | Chevrolet/GMC | Duramax LB7, LLY, LBZ w/ 6.6L |
Note: Fits all wheelbases and cab configurations unless otherwise noted. This is a straight-pipe system with no muffler included.
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems that meet our strict standards for durability and flow. Every kit is vetted for a precision, bolt-on fit, ensuring you get a high-performance system that sounds as good as it performs, without the headache of poor fitment or subpar materials.
Features
- 4" Downpipe Back Exhaust
- Stainless Steel Construction
- Single Side Exit Design
- No Muffler Included
- Easy OE Hanger Installation
- Reinforced flanges
Includes
- (1) 4" Stainless Steel Downpipe Back Exhaust System
- Heavy-Duty Installation Clamps
- Pre-Weld Contour-Bent Hangers













