Truck ECM & ECU Modules

Browse engine control modules (ECM / ECU) for Freightliner, Kenworth, Peterbilt, International, Mack, Volvo and other heavy-duty trucks. Match the OEM part number on your existing unit before ordering.

43 products

About ECM / ECU Modules

This collection lists engine control modules (ECM / ECU) for heavy-duty commercial trucks from Freightliner, International, Kenworth, Peterbilt, Mack, Volvo, Western Star and other makes. The ECM manages fuel delivery, engine protection and emissions-related functions. Most engine control modules carry a label with the part number, a serial number and sometimes a software or calibration number.

Identifying the correct replacement

Start with the OEM or manufacturer part number on the existing unit and search for it using the search bar. Similar-looking parts can have different part numbers depending on the truck model, engine, production date and optional equipment. Replacement ECMs usually need to be programmed or have parameters transferred from the original unit, and many carry a core deposit.

Condition, cores and programming

Each listing states the condition of the part and whether a core deposit or programming may be required. Use the truck-make links above to narrow the list to your truck, and contact our parts team with your truck details if you are not sure which part you need.

Can't Find Your Part Number?

Send us the number from your existing component and your truck details. We'll check whether we can source a matching replacement.

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