SKU: 49-04093 | UPC: 802959610268
aFe Power Chevrolet GMC 6.6L Turbocharger Downpipe 2001-2004 Silverado Sierra 2500HD 3500
This aFe Power ATLAS 3-inch steel downpipe fits 2001-2004 Chevrolet Silverado 2500HD 3500 and GMC Sierra 2500HD 3500 with 6.6L Duramax LB7 diesel engines. Mandrel-bent tubing delivers smoother airflow from turbo to exhaust for reduced EGTs and faster turbo spool-up. The black powdercoated finish with thermal header tape wraps insulation lowers underhood heat for reliable performance gains.
Key Features
- Mandrel Bent 3″ Steel Tubing: Ensures maximum flow with smooth bends to cut turbulence improve throttle response and spool times
- CNC Machined V-Band Flanges: Provides 360-degree leak-proof seal at inlet and outlet with included turbine gasket for secure OE-style connection
- Black Powdercoat and Thermal Tape: Shields heat reduces EGTs and protects components for extended durability
- Bolt-On Design: Replaces factory downpipe using stock mounting points for straightforward installation without modifications
- Aluminized Steel Construction: Delivers corrosion resistance and strength for long-term use in demanding diesel applications
Product Notes
- Direct OE replacement enhances exhaust flow on LB7 Duramax trucks
- Inspect turbo and exhaust connections before install for best results
- Ships in protective packaging weighs 19 lbs box dimensions 48 x 12 x 12 inches
Installation Notes
- Professional installation recommended.
- Bolt-on fit uses factory hanger locations and hardware
- Torque V-band clamps to spec includes turbine gasket for seal
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2004 | Chevrolet | Silverado 2500 HD | Base LS LT WT |
| 2001-2004 | Chevrolet | Silverado 3500 | Base LS LT WT |
| 2001-2004 | GMC | Sierra 2500 HD | Base SL SLE SLT WT |
| 2001-2004 | GMC | Sierra 3500 | Base SLE SLT WT |
Why Choose aFe Power?
- Engineered for diesel performance with proven dyno-tested results
- Heavy-duty materials built for high-heat turbo applications
- Precision manufacturing ensures exact fit and flow efficiency
Frequently Asked Questions
- Q: Does this downpipe fit 2001-2004 Silverado 2500HD 6.6L LB7?
A: Yes it bolts directly to 2001-2004 Chevy Silverado 2500HD 3500 and GMC Sierra 2500HD 3500 V8-6.6L LB7 using factory mounts - Q: What material and finish does it use?
A: Aluminized steel tubing with black powdercoat and high-temp thermal tape wrap for heat insulation and corrosion protection - Q: Is installation straightforward?
A: Bolt-on design replaces OE part includes gasket and flanges professional install advised for optimal sealing
Shipping & Handling
- Method: Free ground shipping on orders over $99
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed 48 x 12 x 12 inches
- Weight: 19 lbs
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