Overview

This Bosch high-pressure injection pump (common part number 0445010102) is a direct-fit unit for a range of 1.6 HDi diesel engines used across Citroën and Peugeot models and some Ford, Mazda and Volvo applications. The pump is supplied used and in working condition; it was removed from a crashed vehicle and has recorded approximately 101,000 km. Mechanics and experienced DIY enthusiasts will appreciate a robust spare that matches frequently searched product numbers (0445010102, 9683703780).

Technical Information

• Manufacturer: Bosch
• Model: Suitable For Citroën Berlingo, Citroën C2, Citroën C3, Citroën C4, Citroën Xsara Picasso; Peugeot 206, Peugeot 207, Peugeot 307, Peugeot Partner (1.6 HDi engines)
• Product Codes: Bosch 0445010102; OEM 9683703780
• Other Numbers: 1920HT, 1921Q5
• Condition: Used, Removed From Crash Vehicle, Functional
• Recorded Mileage: Approximately 101000 km

Installation Recommendations

• Work Should Be Performed By A Qualified Mechanic Or By An Experienced DIYer With Proper Tools.
• Relieve Fuel System Pressure Before Disconnection To Avoid Fuel Spray.
• Disconnect The Battery And Follow Manufacturer Procedures To Reduce Risk Of Injury Or Damage.
• Mark And Maintain Correct Timing/Drive Alignment When Removing And Installing The Pump — Incorrect Timing Can Cause Severe Engine Damage.
• After Fitting, Prime The Fuel System Carefully To Remove Air (Bleed System) And Check All Connections For Leaks.
• Test Engine Start-Up, Idle Stability And Road Performance; Re-check For Leaks And Fault Codes.

Most Common Failure Causes

• Fuel Contamination (Water, Dirt) Leading To Internal Wear Or Blocked Valves.
• Wear Of Mechanical Components After High Mileage (Plungers, Cam Followers, Seals).
• Fuel Starvation Or Faulty Lift Pump Allowing Air Into The System.
• Corrosion Or Seized Components Due To Extended Standstill Or Contaminated Fuel.
• Physical Damage From Impact (Relevant Here Since Unit Was Removed From A Crashed Vehicle) — Always Inspect Mounts And Drive Flanges.

Signs Of A Failing Injection Pump

• Hard Starting Or Prolonged Cranking.
• Loss Of Power, Hesitation Under Load Or Irregular Acceleration.
• Rough Idle, Increased Smoke Or Strong Fuel Smell.
• Visible Fuel Leaks At Pump Seals Or Connections.
• Diagnostic Fault Codes Related To Fuel Pressure Or Injector Timing.

Notes For Buyers

The pump is a used Bosch unit that matches common OE references for Stellantis applications. Searches by part number (0445010102, 9683703780) are common — listing these codes helps technicians and DIYers find the correct replacement quickly. For timing-critical installation and priming, use workshop documentation and, if in doubt, have the replacement performed or supervised by a specialist.