View 5 Photos View 0 Videos Cummins ISB 6.7L Flywheel Housing for a Cummins ISB-CR-6.7 (REAR GEAR) $98.10 USD CUMMINS 3971631 FLYWHEEL HOUSING. CAST ALUMINUM. B-SERIES APPLICATIONS. SAE #3. SUPERSEDED PART NUMBERS 4944349 5264553 ConditionNewFits To Make(s)CUMMINSFits To Model(s)ISB-CR-6.7 (REAR GEAR)Stock Number57255 MLS Number11339723CategoryFlywheel Housings Last Updated3/1/2026 LocationWykoff, MN, US Sold ByLKQ Heavy Truck (855) 905-___ SHOWNUMBERCall Seller Email Seller Save More Info