Aero Exhaust AT4040 Aero Turbine Muffler requires-mpvi The switch alone does not

The switch alone does not tune

Our custom billet adapter fittings are made from billet aluminum to prevent rusting both internally/externally and are precision machined for a leak free design

2001-2016 Duramax S400 Valley Turbochargers

(01 LB7 requires AC line re routing)

Aero Exhaust AT4040 Aero Turbine Muffler requires-mpvi The switch alone does notThe Aero Exhaust AT4040 Aero Turbine Performance Muffler provides your truck with a deeper, more aggressive exhaust sound. The AT4040 is the only performance muffler that will give you the performance of a full system without breaking the bank. This Muffler is designed for high output diesel engines and features a patented airfoil technology that increases horsepower, torque, flow and also reduces temperatures. Most vehicles have extreme restrictions