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 for a true plug-and-play installation with our cloning service.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS require key programming after installation. This is normal.
For a 100% plug-and-play solution, we recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you to mail in your original computer to us for full cloning.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
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.