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




Cameron Turner –
Fast shipping and the unit was truly plug-and-play. Saved me a bundle compared to dealer prices and installation went without a hitch.
Noah Hamilton –
I received the 20325251AK ECM for my 2004 Ram Cummins much quicker than I expected, which was a great surprise. The unit arrived perfectly programmed to my VIN and was truly plug-and-play, making installation a breeze. Compared to dealer prices, this service saved me a significant amount, and the team kept me informed throughout the process. Overall, it was a smooth experience from start to finish.
Kevin Burton –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2004 Ram 5.9L, making installation a breeze. Great service and fast turnaround!
Sean Kelly –
I ordered the 20325251AK ECM for my 2004 Ram with the 5.9L Cummins and was really impressed by the plug-and-play setup. The unit arrived quickly, and it was already VIN programmed, so installation was straightforward with no extra hassle. Customer service was excellent, answering all my questions promptly and keeping me informed throughout the process. Shipping was free, which was a nice bonus given the fast turnaround.
Mark Hudson –
I was really impressed with how quickly this ECM arrived—it was shipped faster than I expected. Installation was a breeze; it was truly plug-and-play, and everything worked perfectly right from the start. The fact that the unit came VIN programmed saved me a ton of hassle and money compared to dealer prices. The communication with the seller was clear and professional, which made the whole process stress-free. Overall, this purchase exceeded my expectations and got my 2004 Cummins running like new again.
Nicholas Ramirez –
The VIN-programmed ECM arrived quickly with free shipping and worked perfectly right out of the box. Great service and hassle-free setup!