1 0 Mack CRD 92-93 Rear Differential for a 1979 Mack R685ST $1,095 USD CRD93 RR 4.42 90 DAY WARRANTY, Core Charge: 450.00, Ratio: 4.42 ConditionUsedRear End4.42 ratioFits To Make(s)MackFits To Model(s)R685STWill Fit Year(s)1979Stock Number33121-2 MLS Number10736567CategoryDifferentials, Rear Last Updated2/16/2024 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info