This high-pressure Bosch injection pump is a direct-fit fuel supply unit for many 1.5 HDI diesel applications. It is ideal for professional garages and experienced DIY mechanics searching by part number (common search terms include 0445010761 and 9817903080). The pump delivers the precise pressure and metering required for modern common-rail diesel injection systems, helping to restore engine responsiveness, fuel economy and smooth idle when the original unit shows wear or leakage.

Technical Information

• Manufacturer: Bosch
• Model: 1.5 HDI High-Pressure Injection Pump
• Product Codes: 0445010761, 9817903080
• Additional Numbers: 1631886980, 445010761
• Compatible With: Citroën Berlingo III; Peugeot Partner III, Rifter, 308 (T9); and other 1.5 HDI applications from DS, Opel and Fiat
• Condition Note: Removed From Vehicle At 48,000 km

Function And Symptoms

The injection pump generates the high pressure required by the injectors and precisely meters fuel delivery throughout the engine speed range. When a pump starts to fail you may notice hard starting, rough idle, loss of power, increased smoke, poor fuel economy or fuel leaks. In many cases failure signs are caused by internal wear, seal deterioration or contamination from fuel system debris.

Why The Part Typically Fails

Common causes of pump failure include contaminated or poor-quality diesel (abrasive particles and water), degraded internal seals and valves, erosion of plunger/barrel surfaces, cavitation and corrosion. Lack of regular fuel filter replacement or degraded fuel lines can accelerate wear. Mechanical shock or improper installation can also damage internal components.

Installation Recommendations

Follow the vehicle manufacturer’s service procedures. Typical recommended steps:

• Relieve fuel pressure and disconnect the battery before starting work.
• Mark timing reference points and mounting positions to preserve alignment.
• Carefully disconnect fuel lines, electrical connectors and mounting hardware. Replace all sealing washers and gaskets during reassembly.
• Install pump in correct timing position and tighten fasteners to manufacturer torque specifications.
• Prime the fuel system and bleed air thoroughly before cranking. Check for leaks and abnormal noises after start-up.
• After installation verify engine operation across the rev range; fuel rail pressure and injector operation should be checked with appropriate diagnostic tools.

Because correct timing, priming and leak-free connections are essential, installation is recommended for experienced mechanics or workshops equipped for diesel injection service. Keep protective measures and follow safety procedures when working with pressurised fuel.

Replacement Notes

There is no universal service interval for injection pumps; longevity depends on fuel quality, maintenance and operating conditions. When replacing, use the correct part numbers and replace associated seals and filters. If intermediate components (high-pressure lines, injectors) are contaminated, address those as well to prevent early failure of the new pump.

Search by part number (e.g. 0445010761 or 9817903080) to confirm fitment for your application. This pump suits many 1.5 HDI models from Citroën, Peugeot, DS, Opel and Fiat and is a practical option for restoring diesel performance and reliability.