Improve flow in your 2017-2019 GM 6.6L Duramax L5P with the Banks Power 48947 Single Monster Exhaust System. Banks Power has tested this exhaust system to cool as much or more than stock, and even over 100 degrees cooler than other aftermarket systems. Flowing up to 80% over stock, this 4" exhaust system is constructed from mandrel-bent stainless steel and cuts backpressure by nearly 57%.
- 4" Stainless Steel Construction
- Lower Exhaust Gas Temperatures
- Mandrel-Bent Constant Diameter Tubing
- Black Or Polished Exhaust Tip Available
Fitment Note: All Cabs & Beds applies to GM 2500HD/3500HD Pickups. This system is not intended for use on Cab & Chassis models.