5" DOWNPIPE BACK SINGLE | 2020-2022 GM 2500/3500 6.6L DURAMAX L5P Style:Muffler FASS Whisper Technology effectively and

FASS Whisper Technology effectively and drastically reduces the sound levels of the Signature Series FASS Diesel Fuel System to a “whisper” while at the same time increasing fuel flow rates

For detailed installation instructions select your vehicle from the list below:

Air Filter For Intake Kits 75-5068

Turbo oil drain gasket

5" DOWNPIPE BACK SINGLE | 2020-2022 GM 2500/3500 6.6L DURAMAX L5P Style:Muffler FASS Whisper Technology effectively andOur exhaust systems are offered in 16 gauge aluminized steel or T409 Stainless for easy installation and utmost durability. Expected benefits include enhanced performance, decreased EGTs, heightened flow, and improved breathing for your truck. With our FLO~PRO exhaust system, gain horsepower you can hear! * IMPORTANT NOTE: These kits will only fit models equipped with the OEM style 4 bolt flange off the turbo direct pipe! These parts are for use on