Description
Injection pump 2.0 HDi 100 kW RHR RHK with Siemens VDO system for Citroën, Peugeot, Ford, Volvo, Mazda
Tested, with functional warranty.
With fuel pressure regulator.
This high-pressure fuel injection pump is designed for 2.0 HDi diesel engines (100 kW), equipped with Siemens VDO components and an integrated fuel pressure regulator. It delivers precise fuel metering and pressure to the injection rail, ensuring stable combustion and smooth engine performance. Ideal for professional workshops and skilled DIY mechanics who service Citroën and Peugeot diesel engines.
Compatibility / Typical Applications
- Engine Codes: RHR, RHK (2.0 HDi, 100 kW)
- Common Vehicle Applications: Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Citroën C8; Peugeot 307, Peugeot 407, Peugeot 607, Peugeot 807
- Also Listed For: Selected Ford, Volvo and Mazda models using the same 2.0 HDi powertrain (see engine code RHR/RHK)
Technical Information
- Manufacturer: Siemens VDO
- Model: 2.0 HDi 100 kW (RHR / RHK)
- Product Codes: 5WS40019, 5WS40809
- Other Numbers: 1920QH, 1920N8, 9658193980, 9688153080, 131000
Function And What To Expect
The pump pressurizes diesel fuel and supplies it to the common-rail/high-pressure fuel rail (depending on application) according to signals from the engine management system. The integrated pressure regulator controls rail pressure to match engine load and injection demands. Proper operation is critical for fuel economy, emissions and driveability.
Typical Failure Causes
- Contaminated Fuel: Particles, water or degraded fuel cause accelerated wear of internal components and valves.
- Wear And Age: High mileage leads to internal wear, reduced pressure capability and erratic metering.
- Failed Pressure Regulator Or Seals: Loss of pressure control or external/internal leaks.
- Poor Maintenance: Clogged filters or irregular service intervals increase failure risk.
Replacement / Installation Notes
Replacing a high-pressure injection pump requires mechanical skill and attention to safety. Typical steps used by experienced technicians:
- Relieve fuel system pressure and remove fuel pump relays/fuses following the vehicle service manual.
- Disconnect the battery before beginning work.
- Clean the area around the pump and fuel lines to avoid contamination when lines are opened.
- Label or mark high-pressure lines to preserve their original positions if reusing them; then carefully disconnect fuel lines and electrical connectors.
- Remove mounting bolts and extract the pump. Replace all seals and gaskets with new parts.
- Install new pump, torque fasteners to the manufacturer’s specification and reconnect lines and electrical harnesses.
- Prime the fuel system and bleed air from fuel lines following the service procedure. Check for leaks at operating pressure.
- Perform a test start and check for correct operation, idle stability and absence of leaks.
If the vehicle requires pump timing adjustment or adaptation procedures, these should be carried out with the appropriate diagnostic equipment or by a qualified workshop.
Recommended Workshop Advice
- Always use clean, high-quality diesel and replace fuel filters at recommended intervals to prolong pump life.
- Install new sealing rings and gaskets during replacement to prevent leaks.
- After installation inspect for leaks and proper rail pressure before road testing.
Why Choose This Unit
Original Siemens VDO components and reference codes included in this listing make this injection pump a direct-fit solution for many 2.0 HDi applications. The integrated regulator ensures correct pressure control, restoring engine performance, drivability and fuel efficiency when the original pump is worn or faulty.
