4 0 Cummins QSB 6.7 Flywheel Housing for a Cummins QSB-6.7 $350 USD Good used, cleaned and inspected Cummins QSB-6.7 flywheel housing. Part number: 3973061. Quantity2ConditionUsedFits To Make(s)CUMMINSFits To Model(s)QSB-6.7Part Number3973061Stock NumberRyd 3973061 MLS Number13741355CategoryFlywheel Housings Last Updated8/5/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info