11-15 Duramax 5″ Downpipe Back Exhaust by P1 Race Parts Competition Exhaust Systems are an ideal solution to pair with a race tuner and delete your diesel particulate filter (DPF) off your diesel pickup truck. You must use a tuner when removing the DPF off of the vehicle.
This pipe is the V Band Flange. If you have the V Band Style please order the 11-16 pipe. You can see which type of flange you have by looking at the downpipe through the passenger wheel well.
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