Description
2004 RAM Ram Truck (Cummins) 5.9L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 RAM Ram Truck (Cummins) 5.9L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: 647-247-8555
Marcus Keller –
I purchased the 20325251AG ECM for my 2004 RAM 5.9L Cummins, and I’m very impressed with the quality and fit. The unit arrived quickly with free shipping, which was a nice bonus. What really stood out was the seamless VIN programming—they had it all set to go when it arrived, making installation straightforward. The whole process saved me a lot of hassle, and my truck runs perfectly now.
Caleb Nelson –
I’m really impressed with this ECM for my 2004 RAM Cummins. The unit arrived quickly and was truly plug-and-play, making installation straightforward without any hassle. Choosing this over dealer repair saved me a bunch of money, and the communication throughout the process was clear and professional. Overall, a smooth experience from start to finish.
Nathan Jenkins –
I was a bit nervous ordering a replacement ECM for my 2004 RAM with the Cummins 5.9L, but this unit arrived VIN programmed and ready to go. The plug-and-play setup made installation straightforward, and my truck fired up without any issues. Shipping was fast and surprisingly affordable, which was a nice bonus. Throughout the process, the seller was responsive and answered my questions quickly, keeping me in the loop every step of the way. Overall, this was a smooth experience and my truck runs better than it has in a long time.
Miguel Phillips –
The ECU arrived quickly and was completely plug-and-play, making installation a breeze. Their service saved me a ton compared to dealer prices and the communication was top-notch.
Liam Torres –
Great quality ECM for my 2004 Ram 5.9L, and the free shipping was a nice bonus. The unit arrived quickly and worked perfectly right out of the box.
Owen Hall –
I ordered the 20325251AG ECM for my 2004 RAM Cummins and was really impressed by how smooth the whole process went. The unit arrived quickly with free shipping, which was a nice bonus. What stood out most was that it came VIN programmed and ready to install, so I had it up and running without any technical hassle. The quality feels solid and my truck runs better than it has in years. Definitely a reliable source if you need a replacement module.