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





Daniel Nichols –
The ECU arrived quickly with free shipping and was programmed perfectly for my 2004 Cummins—couldn’t be happier with the smooth plug-and-play setup.
John Wallace –
I purchased the 20325251AE ECM for my 2004 Ram Cummins, and I’m very impressed with the overall experience. The unit arrived quickly with free shipping, which was a pleasant surprise. It came VIN programmed and ready to go, so installation was straightforward with no headaches. The seller also kept me informed throughout the process, answering all my questions promptly and professionally.
Jack Turner –
I ordered the 2004 RAM 5.9L ECM and was very impressed with the professional programming service they provided. The unit arrived ready to install with no additional setup needed, which saved me a lot of hassle. Their communication was excellent throughout the process, and they kept me informed every step of the way. Shipping was also prompt and reasonably priced, making the entire experience smooth and worry-free.
Mason Perez –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2004 Ram, making installation a breeze. The team answered all my questions promptly, which gave me great confidence in the purchase.
Harvey Gonzalez –
I received the 20325251AE ECM for my 2004 Cummins truck quicker than expected, and the free shipping was a nice bonus. The unit came VIN programmed, which saved me a lot of hassle since it was truly plug-and-play. Installation was straightforward, and my truck fired up smoothly with no issues. I appreciated the clear communication from the seller; they answered all my questions promptly and kept me informed throughout the order process. Overall, a great experience and a high-quality product that got my Ram running like new again.
Dylan Adams –
I was really impressed with the service I received for the 20325251AE ECM for my 2004 Ram with the 5.9L Cummins. The unit arrived quickly and was already VIN programmed, so installation was straightforward and hassle-free. I appreciated how the seller provided a complete plug-and-play setup, which saved me a lot of time and guesswork. Throughout the process, their customer support was very responsive and kept me in the loop about shipping and delivery. Since swapping the ECM, my truck runs smoother than it has in years—definitely a quality repair at a fair price.
Andrew Turner –
I recently purchased the 20325251AE ECM for my 2004 RAM with the 5.9L Cummins, and I couldn’t be happier with how smoothly everything went. The ECU arrived promptly with free shipping, which was a nice bonus. What really impressed me was the professional programming service—they handled the VIN programming before shipping, so it was truly plug-and-play once I got it installed. The truck fired up without a hitch, and the performance feels just right. The seller also kept me informed every step of the way, answering my questions quickly and clearly. Overall, a hassle-free experience that I’d gladly recommend.
Joel Evans –
Fast shipping and a perfect plug-and-play fit for my 2004 Cummins; saved me a bundle compared to dealer prices. Installation was seamless and the customer support was very responsive.