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: Flowmaster replacement muffler SAYWHAT 07-31-2005, 04:25 PM Have read on this site that a few have put a flowmaster on their Duramaxs.Have been on a lot of websites including Flowmaster and can not find a direct replacement.The closes one I did find was part#953558,but has a center inlet and outlet.The stock muffler has a six and half inch offset between inlet and outlet.:help: Maxter 07-31-2005, 05:22 PM #953553 is the part number you're looking for. It has the correct offset and correct lenght. That the one I have. I like the sound alot. Forced Induction 08-01-2005, 07:13 AM On Summit page it comes up FLO-53553, its a series 50. 3.5" offset. Looks like the right one. badass1000 08-01-2005, 07:44 PM how much does the muffler cost? | ||