4 0 (GOOD USED) Cummins ISB 3.9L Diesel Engine Block Stiffener OEM-Part# 4891166 $124.99 USD PART SPECIFICS, Price USD: $124.99, Make: CUMMINS ISB 3.9L DIESEL ENGINE, Model: BLOCK STIFFENER, Part#: 4891166, Stock#: 322319, Condition: GOOD USED For... Warranty ConditionUsedPart Number4891166Stock Number322319 MLS Number12484665CategoryEngine Miscellaneous Parts Last Updated12/4/2023 LocationRockwood, TN, US Sold ByMachinery and Truck Parts (844) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info