TESTED 10-12 RAM 2500 3500 4500 6.7L CUMMINS DIESEL ECU ECM ENGINE COMPUTER 5268442. 5268442 – YOU MUST MATCH THIS! This ecu will interchange or replace the ecu in the following vehicles. 10-12 Dodge Ram 6.7L Cummins diesel models. You MUST match your part number! ECU has been tested with our state of the art vehicle simulator which tests over 25 circuits of the ECU! Some of those are listed below. Alternator field, Fan and VGT voltage output. Intake air heater and more! Mounting points are all open and intact. Pins perfect, none are broken or bent. Connectors may have some small chips in the plastic but all lock tabs in place. For Plug and Play you must follow the below three steps. Step 1: Match your part number series per above fitment guide. Step 2: Program ecu to your VIN and mileage. We provide free programming for our customers. Your Part Source specializes in providing recycled oem auto parts and quality remanufactured auto parts! Serving our clients since 2008 our seasoned staff of electronic repair techs provides affordable alternatives to the high cost of new car parts. Purchasing a recycled auto part or a remanufactured part is also a great way to go green and help the environment. Choosing one of our reliable remanufactured parts also prevents our buyers from trudging through their local junk yard only to install a part that no longer works, ugh! A growing Midwestern company, we pride ourselves on quality workmanship and superior customer service! Give us a try today! Our goal is to provide the best customer service possible! We have a guaranteed 24 hour response time to emails received 7 days a week 365 days a year! We are here to serve you! Knowing trouble codes, symptoms, parts numbers etc etc will help our seasoned staff resolve any issues as quickly as possible so we can help get your vehicle up and running! We will do what we can to get you the part you need! Every part is professionally pre-wrapped for protection before being boxed! We then use premium fill and boxes plus foam or bubble-wrap if necessary all to make sure you receive your part undamaged! This will help our staff work with you on a quick resolution! We know purchasing parts for your vehicle can be confusing and frustrating. It’s that simple! We would love to earn your business and provide a superior product and great customer service! We think you will be glad you did!