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.
