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: Local: 647-247-8555 | Toll-Free: 1-800-915-5566




Oliver Perez –
I recently purchased the 20325251AE ECM for my 2004 RAM with the Cummins 5.9L, and I couldn’t be happier with how smooth everything went. The part arrived quickly with free shipping, which was a nice bonus. What really impressed me was how it came VIN programmed, so installation was pretty much plug-and-play—I was back on the road in no time. The engine runs perfectly now, and I’ve noticed a real improvement in performance. The whole process was hassle-free, and I appreciate the quality of the unit.
Zachary Evans –
Fast shipping and plug-and-play unit made installation a breeze. Saved me a ton compared to dealer prices and the communication was spot on.
Grant Watson –
The 20325251AE ECM for my 2004 RAM Cummins arrived quickly and was exactly as described. Installation was straightforward since it was plug-and-play, which made the whole process hassle-free. The service saved me a ton compared to dealer prices, and their communication was clear every step of the way. Overall, a smooth experience from start to finish.
Benjamin Marshall –
I purchased the 20325251AE ECM for my 2004 Ram 5.9L Cummins, and I’m very impressed with the quality of the unit. The programming was done professionally and arrived plug-and-play, which saved me a lot of headaches during installation. Shipping was free and arrived quicker than I expected, plus the seller responded promptly to all my questions. Overall, a smooth experience with a reliable product that runs perfectly.
Chase Graham –
Received my 20325251AE ECM for my 2004 Cummins with VIN programming included—plug-and-play setup was flawless and arrived faster than expected with free shipping.
Great communication throughout the purchase, and the professional programming service made installing the ECU on my 2004 RAM 5.9L a breeze.
The unit came quickly with reasonable shipping costs, and the quality of the updated PCM exceeded my expectations.