View 1 Photo View 0 Videos Meritor-Rockwell RT40-145 Front Differential for a 1994 Peterbilt 379 $1,095 USD RT40-145 USED TAKEOUT 3.91 RATIO, WILL INSPECT IN OUR GEARSHOP 90 DAY WARRANTY, Ratio: 3.91 ConditionUsedRear End3.91 ratioFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1994Stock Number21526-2 MLS Number14161306CategoryDifferentials, Front Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info