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FREE LIFETIME WARRANTY
PRODUCT HIGHLIGHTS
- This is a Dodge OEM computer for a 5.9L Diesel ECM Ram Diesel 5.9L .
- LIFETIME WARRANTY w/ Core Exchange.
- Plug and Play No need to visit a Dodge dealership!
- Fully rebuilt, programmed, and tested for quality.
- Fully programmed to your exact VIN. You'll provide your VIN # after purchase.
- All of the latest software updates from Dodge will be installed.
- We VIN Match Part# to Guarantee correct unit. (No Part# Required).
- Need a different model year? We have Diesel Dodge ECMs for model years 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 and 2007.
REQUIRED INFO
- VIN# (17 characters - can be found on dashboard or on registration card)
EXCHANGE PROCESS
- Your Lifetime Warranty is activated when you send us your old rebuild-able part in an exchange.
- We will include a FREE return shipping label in the package for you, so you can easily send us your old part and complete the exchange.
ADDITIONAL INFORMATION
SKU | 1997864 |
---|---|
Condition | Refurbished |
Make | Dodge |
Model | 5.9L Diesel ECM |
Engine Size | 5.9L |
Regular Price | $1895.00 |
Sale Price | $1295.00 |
Stock | IN STOCK |
1998 Dodge Ram 5.9L Diesel ECM
Overview of the 1998 Ram Diesel Engine Control Module
Designed for the 1998 Dodge Ram, this replacement ECM restores the 5.9L Cummins ISB diesel engine’s performance in Ram 2500 and 3500 trucks.
It manages the VP44 injection pump, ensuring precise fuel delivery and turbo boost control for base, SLT, and Laramie trims. The 1998 ECM supports 47RE automatic or NV4500 manual transmissions. In 1998, Dodge adopted OBD-II diagnostics to meet emissions standards, enhancing the Ram’s diesel platform.
Technical Specifications
- Engine Compatibility: Calibrated for 5.9L Cummins ISB diesel.
- Transmission Support: Integrates with 47RE automatic or NV4500 manual.
- Part Number Range: Typically 394XXXX series (verify fitment).
- Diagnostics: Uses OBD-II protocols for emissions monitoring.
Key ECM Functions
- Controls VP44 injection pump for accurate fuel timing.
- Manages turbo boost to optimize power output.
- Processes crankshaft, throttle, and coolant sensor inputs.
- Coordinates with transmission for smooth shift performance.
Significance for 1998 Ram Owners
This reliable ECM delivers consistent torque for towing and hauling in 1998 Ram trucks. Compared to 1999’s updated firmware, the 1998 module uses basic OBD-II diagnostics, focusing on core engine management. It integrates with the 1998 Ram’s electrical systems, ensuring compatibility with the Cummins engine’s VP44 pump. By replacing a faulty unit, this control module revives the 1998 Dodge Ram’s performance, supporting its legacy as a durable diesel truck for heavy-duty tasks.
HOW DOES IT WORK?
Not sure this will work? Order RISK-FREE!
SEND IT TO ME NOW!BUYER BEWARE! NOT ALL COMPUTER SELLERS ARE EQUAL.
We are the ONLY company that runs every computer through a computer aided vehicle simulator to test for quality and compatibility with your car & VIN.

OVER 150,000 Customers Served
Every unit is programmed & tested in our facility in Cary NC
CarComputerExchange fully rebuilds and tests ALL computers. We are the ONLY seller that runs each computer through a computer aided vehicle simulator that tests every circuit in the module. Other companies run limited tests.
Most companies run limited tests. Some online stores simply repaint old units and sell without testing. Don't fall for the CHEAPER option.

Our testing & rebuilding process starts with a deep visual evaluation of the circuit board and all the electronic components. From water or acid corrosion, to fire or burn damage, we pay attention to every detail. We also scan the ECU memory or CPU to make sure that it is working properly.

We then test the ECU's with our proprietary electronic lab equipment on our bench, which emulates the car's engine to ensure accuracy in every diagnosis.