This Muffler Delete Pipe Replaces 4" Single Exhaust System Muffler on 1994-2004 Dodge 5.9L Cummins - Not for OEM muffler replacement. This muffler delete will not fit stock exhaust systems. It was designed to be used on MBRP exhaust systems or other aftermarket systems with the same style muffler. Has 4" Inlet / Outlet.
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