Over time, most exhaust systems will begin to rust and deteriorate. On the later 5.9 and 6.7 Cummins exhuast systems, they will typically break right at the turbo flange. We designed this flange to work as an easy replacement to eliminate the need for a new downpipe or new exhaust. Simply cut the broken factory flange off by working through the wheel well, then weld our repair flange on and reconect to the turbo. This flange will work with 4″ or 5″ OD exhaust systems on all Cummins 2005-2018. The inside diameter of the flange is 4.2″. The outside diameter of the flange where the v-band clamp attaches is 5.2″
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