Check the listing for details. OEM Genuine PACCAR ECU ECM 2298831 MX13 ENGINE CONTROL MODULE. Condition: New. Listed at 3500.00 USD. Brand new ECM. Replacement Part Numbers: 1833060, 1877245, 1877245PE, 2013285, 2013285PE, 2109555PE, 2013285PEX, 1877245PEX, 2295122PEX, 2037394PEX, 2160700, 2295122, 12013285 , 2298831PE, 2298831PEX, 1833060PEX, 1877245PE, 2109555, 2109555PEX. This is a new ECU and needs to be programmed at the Peterbilt and/or Kenworth dealers ONLY. We have had a few times requests that the item could not be programmed at the independent shops from the different customers but we have recommended customers to go to the Kenworth/Peterbilt dealer and the problem was resolved.Return Policy: will except a return if its ONLY Factory Defected item with the proof from the certified Dealer. Why we do this? Because some Customers buying the product and using it as a diagnostic without checking other issues such as harness, etc.