aFe ATLAS 4 IN Aluminized Steel Down-Pipe Exhaust System w/o Muffler GM Diesel Trucks 15.5-16 V8-6.6L (td) LML - 49-04053NM

The new ATLAS exhaust is engineered to perform in the most extreme environments. This system is constructed from 4" aluminized steel tubing for maximum flow, increased horsepower, increased torque and lower EGTs. To provide a leak-free seal, OE style band clamps and flanges are used that offer a 360 degree sealing area. ATLAS exhaust pipes are the perfect combination of performance, fit and value.