View 3 Photos View 0 Videos Meritor-Rockwell Rear Differential for a 2015 International PROSTAR Recently Updated Contact for price (Used) 2015 International Prostar, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Make: Meritor/Rockwell, Model: MR2014X4NFRNN531 342, Ratio: 3.42, Serial Number: FOR02780712, Part Number: A6664B83,... ConditionUsedRear End3.42 ratioFits To Make(s)InternationalFits To Model(s)PROSTARWill Fit Year(s)2015Part NumberA6664B83Stock NumberP-51808 MLS Number12143087CategoryDifferentials, Rear Last Updated3/1/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info