This aFe POWER turbo downpipe is engineered to outflow and outperform the restrictive, factory downpipe on the 2011 - 2015 GM Truck with V8-6.6L (td) engine. The mandrel bent, stainless steel tubing offers smoother transition bends for increased airflow, delivering quicker turbo spool times. CNC machined V-band inlets and outlets ensure a factory style, 360-degree sealing surface. Both inside and outside surfaces of the downpipe are ceramic coated to reduce EGT's even in the most extreme environments.
Installation Instructions
This Part Fits:
        
        
          Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel | 
|---|---|---|---|
| 2015 | Chevrolet | Silverado 2500 HD | High Country | 
| 2011-2015 | Chevrolet | Silverado 2500 HD | LT | 
| 2011-2015 | Chevrolet | Silverado 2500 HD | LTZ | 
| 2011-2015 | Chevrolet | Silverado 2500 HD | WT | 
| 2015 | Chevrolet | Silverado 3500 HD | High Country | 
| 2011-2015 | Chevrolet | Silverado 3500 HD | LT | 
| 2011-2015 | Chevrolet | Silverado 3500 HD | LTZ | 
| 2011-2015 | Chevrolet | Silverado 3500 HD | WT | 
| 2015 | GMC | Sierra 2500 HD | Base | 
| 2011-2015 | GMC | Sierra 2500 HD | Denali | 
| 2011-2015 | GMC | Sierra 2500 HD | SLE | 
| 2011-2015 | GMC | Sierra 2500 HD | SLT | 
| 2011-2014 | GMC | Sierra 2500 HD | WT | 
| 2015 | GMC | Sierra 3500 HD | Base | 
| 2011-2015 | GMC | Sierra 3500 HD | Denali | 
| 2011-2015 | GMC | Sierra 3500 HD | SLE | 
| 2011-2015 | GMC | Sierra 3500 HD | SLT | 
| 2011-2014 | GMC | Sierra 3500 HD | WT |