View 1 Photo View 0 Videos New 4" Resonator/Muffler Resonators Inlet/Outlet - 4 In Diameter - 9 In Body $84.75 USD NEW 4" RESONATOR/MUFFLER Resonators Inlet/Outlet - 4 in Diameter - 9 in Body Length - 10 in Overal Length - 16-1/2 in All additional 3-6 DBA reduction in exhaust noise be achieved with... ConditionNewPart NumberMR40Stock NumberMR40 MLS Number9608053CategoryMufflers Last Updated3/11/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info