0 0 Mack CRD Differential Part ratio 3.42 no air lock Contact for price Used Mack CRD front rear no air lock ratio 4.42 new style case. ConditionUsedPart NumberRatio 4.42Stock NumberA1328FR MLS Number11653429CategoryDifferential Misc. Parts Last Updated4/7/2023 LocationScranton, PA, US Sold ByBoots and Hank's Truck Parts, Inc. (833) 396-___ SHOWNUMBERCall Seller Email Seller Save More Info