Truck Emission & Aftertreatment Electronics

Browse emission and aftertreatment electronics, including NOx sensor modules and aftertreatment control units for Freightliner, Kenworth, Peterbilt, International, Mack, Volvo and other heavy-duty trucks. Match the OEM part number on your existing unit before ordering.

97 products

About Emission Electronics

This collection lists emission and aftertreatment electronics for heavy-duty commercial trucks from Freightliner, International, Kenworth, Peterbilt, Mack, Volvo, Western Star and other makes. Aftertreatment control units manage the DPF, SCR and DEF dosing systems and monitor NOx and temperature sensors.

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. Emission components are closely tied to engine model and model year, so the exact part number is the most reliable way to match a replacement.

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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