Iveco FPT Doser DEF Pump 2013-2021: OEM 504374326

Efficient DEF Delivery: IVECO FPT Doser DEF Pump (2013–2021, OEM 504374326)

What is it?
The Doser DEF Pump (OEM 504374326) is a critical component in the Selective Catalytic Reduction (SCR) system used on engines from the IVECO FPT series built between 2013 and 2021. It handles the precise dosing of diesel exhaust fluid (DEF) into the exhaust stream, aiding in the reduction of nitrogen oxides (NOₓ) emissions.

Why Choose the IVECO FPT Doser DEF Pump (OEM 504374326)?
This pump aligns with factory specifications regarding mounting, fluid ports, electronic control interface and dosing calibration. By choosing the correct OEM number, you ensure the replacement unit will integrate seamlessly with your existing emission system, helping maintain correct dosing, avoid system faults and support emission compliance.

Key Benefits
✅ OEM-level Fitment: Matches factory installation points, fluid connections and control interfaces.
✅ Robust Construction: Designed for heavy-duty duty cycles and harsh environments typical of industrial or commercial use.
✅ Precise DEF Dosing: Ensures accurate fluid delivery into the SCR system, supporting proper NOₓ conversion.
✅ Reduced Fault Risk: Proper fit and calibration help minimize DEF system errors and engine derates.
✅ Supports Emission System Longevity: With correct dosing, the catalyst and downstream components face less stress and maintain service life.

Applications
The IVECO FPT Doser DEF Pump (OEM 504374326) is suited for vehicles and equipment powered by IVECO FPT engines within the 2013–2021 range where SCR and DEF systems are present. Typical uses include heavy-duty trucks, vocational vehicles and industrial machines requiring long-term emission system reliability.

Installation Notes
Installation should be handled by a qualified technician familiar with SCR/DEF systems. First, verify that the engine model and serial match the application and the OEM number 504374326. De-pressurize and drain any DEG / DEF fluid per safety protocols. Remove the old pump unit, noting electrical and fluid-line connections. Clean all mounting and fluid-port surfaces, replace any worn gaskets or seals and install the new unit aligned correctly, securing bolts to manufacturer torque specification. Reconnect all wiring and fluid lines, then clear any diagnostic trouble codes. After installation, monitor DEF system messages, dosing feedback and ensure no leaks or abnormal behaviour.

Final Thoughts
Proper DEF dosing is essential for emission compliance and system reliability. The IVECO FPT Doser DEF Pump (2013–2021, OEM 504374326) offers the OEM-specified solution that restores accurate fluid management, supports your SCR system and keeps your heavy-duty equipment running clean and compliant.