4 0 (GOOD USED) Cummins ISB 3.9L Diesel Engine Belt Tensioner Pulley Part# 3976831 $59.99 USD PART SPECIFICS, Price USD: $59.99, Make: CUMMINS ISB 3.9L DIESEL ENGINE, Model: BELT TENSIONER PULLEY, Part#: 3976831, Stock#: 322336, Condition: GOOD... Warranty ConditionUsedPart Number3976831Stock Number322336 MLS Number12448799CategoryBelt Tensioners Last Updated11/17/2023 LocationRockwood, TN, US Sold ByMachinery and Truck Parts (844) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info