BOSCH 0440020028 

Fuel Pre-Supply Pump (Mechanical Gear Pump) 

Technical Data

Product Information

Mechanical Fuel Pre-Supply Pump by BOSCH is an essential component in commercial diesel injection systems. Designed as a heavy-duty gear pump, its primary function is to draw diesel fuel from the fuel tank and deliver it at a steady, low pressure to the main high-pressure injection pump. This specific model measures 129 mm in length, features an M16x1.5 internal thread connection, and acts as a direct, upgraded replacement for the older BOSCH 0440020004 unit . Engineered for extreme reliability, it fits perfectly on various commercial vehicles including Volvo, Renault Trucks, and Iveco .

• ✔ Genuine BOSCH gear-driven design ensures a consistent, pulsation-free fuel supply.
• ✔ Robust mechanical operating mode designed to withstand the rigors of heavy-duty commercial transport .
• ✔ Direct replacement for OEM part numbers like 7485137854 and 5001863917 .

Cross Reference

Fully interchangeable with OEM/OE parts:

⚠ Diagnostic & Installation Tip ⚠

Before replacing the mechanical fuel pre-supply pump:

• Always inspect the entire low-pressure fuel line system. Mechanical pumps rely on engine-driven suction; any air leak in the lines between the tank and the pump will completely halt fuel delivery.
• Replace the primary fuel filters and ensure there are no blockages. A severely restricted filter will destroy a mechanical gear pump over time.
• Ensure the M16x1.5 threaded fittings are clean and use new sealing washers to prevent air ingress or fuel leaks .

If you need more information, please do not hesitate to contact us:

Common translations for this part:

Thank you for visiting! Please bookmark us and come again.