2 0 Cummins ISB 6.7L Engine Oil Cooler for a Cummins ISB6.7 $75 USD Good used, cleaned and inspected Cummins ISB6.7 oil cooler. Part number: 3975818. ConditionUsedFits To Make(s)CUMMINSFits To Model(s)ISB6.7Stock Number1058615 MLS Number13504711CategoryEngine Oil Coolers Last Updated11/3/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info