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SKU: 49-44126-P | UPC: 802959603826
aFe POWER Large Bore-HD 4-Inch 409 Stainless Steel DPF-Back Exhaust System with Polished Tips for 2020-2025 GM 6.6L Duramax Diesel Trucks
This aFe POWER Large Bore-HD 4-inch DPF-back exhaust system delivers horsepower and torque gains for 2020-2025 Chevrolet Silverado 2500HD 3500HD and GMC Sierra 2500HD 3500HD trucks with V8-6.6L L5P Duramax diesel engines. It improves throttle response exhaust flow and produces a deeper aggressive exhaust note without drone for better daily driving and towing. Heavy-duty 409 stainless steel construction ensures long-lasting performance with seamless integration into factory setups.
Key Features
- Mandrel-Bent 4-Inch Tubing: Provides unrestricted exhaust flow for quicker acceleration and power gains across the RPM range
- 409 Stainless Steel Build: Offers corrosion resistance and heat tolerance for high-mileage durability in demanding work conditions
- Dual 5-Inch Polished Tips: Slant-cut 304 stainless steel clamp-on design with aFe POWER logo adds aggressive style to driver and passenger sides
- Mitered Merge Collector: Reduces turbulence and smooths exhaust flow for consistent performance and reduced backpressure
- MIG-Welded Joints: Delivers strength and precision fit with computer-aided design for exact tolerances on all sections
Product Notes
- System maintains emissions compliance as a DPF-back design without requiring tuning
- Inspect hardware regularly for secure fit during heavy towing or off-road use
- Kit weighs 48 pounds with shipping dimensions of 49 x 13 x 23 inches
Installation Notes
- Professional installation recommended.
- Direct bolt-on using existing factory hangers with full instructions included
- Minor cutting may be required based on specific truck configuration
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | GMC | Sierra 2500 HD | AT4 |
| 2024-2025 | GMC | Sierra 2500 HD | AT4X |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2025 | GMC | Sierra 2500 HD | Denali |
| 2024-2025 | GMC | Sierra 2500 HD | Denali Ultimate |
| 2022-2025 | GMC | Sierra 2500 HD | Pro |
| 2020-2025 | GMC | Sierra 2500 HD | SLE |
| 2020-2025 | GMC | Sierra 2500 HD | SLT |
| 2020-2025 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2025 | GMC | Sierra 3500 HD | Denali |
| 2024-2025 | GMC | Sierra 3500 HD | Denali Ultimate |
| 2022-2025 | GMC | Sierra 3500 HD | Pro |
| 2020-2025 | GMC | Sierra 3500 HD | SLE |
| 2020-2025 | GMC | Sierra 3500 HD | SLT |
| 2021-2025 | Chevrolet | Silverado 2500 HD | Custom |
| 2020-2025 | Chevrolet | Silverado 2500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 2500 HD | WT |
| 2024-2025 | Chevrolet | Silverado 2500 HD | ZR2 |
| 2020-2025 | Chevrolet | Silverado 3500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 3500 HD | WT |
Why Choose aFe POWER?
- Engineered and dyno-tested for proven power increases on Duramax engines
- Heavy-duty materials built for work truck longevity and repeated heavy use
- Precise fitment across multiple cab and bed configurations with no-drill design
Frequently Asked Questions
-
Q: Will this fit my 2023 GMC Sierra 2500HD Denali Crew Cab Short Bed?
A: Yes it fits 158.9-inch wheelbase Crew Cab Short Bed configurations on 2020-2025 Sierra 2500HD Denali models with 6.6L L5P Duramax -
Q: What material is used for the tubing and tips?
A: 4-inch mandrel-bent 409 stainless steel tubing pairs with dual 5-inch 304 stainless steel polished tips for rust resistance and style -
Q: Does installation require special tools or modifications?
A: Bolt-on design uses factory hangers and included hardware basic tools suffice though minor cutting may apply to some setups with instructions provided
Shipping & Handling
- Method: Ground shipping via major carriers
- Availability: In stock - ships same or next business day
- Packaging: Secure box measuring 49 x 13 x 23 inches
- Weight: 48 pounds
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