Description
Siemens VDO Fuel Pressure Regulator, DRV Valve For 2.0 HDi Engines. Lightly Used.
Overview
High-quality Siemens VDO DRV fuel pressure regulator designed for 2.0 HDi diesel engines used on many Citroën and Peugeot models. This DRV valve controls fuel pressure delivered to the common rail/high-pressure system to ensure stable injection, smooth running and correct fuel metering. Ideal for professional workshops and experienced DIY mechanics looking for a reliable replacement part by part numbers A2C59506225, X39-800-300-005Z and 193341.
Key Benefits
Replacing a faulty DRV regulator restores correct rail pressure control, reduces rough idling, improves drivability and can lower fuel consumption and emissions. The Siemens VDO unit is known for precise control of pressure modulation and robust construction suitable for high-pressure diesel systems.
Compatible Models
Typical fitment includes a range of Stellantis models with 2.0 HDi engines. Common applications: Citroën Berlingo, Citroën C4, Citroën C4 Picasso, Citroën C5 (including X7), Citroën C8, Citroën Xsara, Peugeot 307, Peugeot 407, Peugeot 807 and Peugeot Partner. Always verify fitment by matching the part number with the vehicle’s existing regulator.
How Replacement Is Performed
Replacement is straightforward for a trained technician with basic workshop tools. General steps:
- Depressurize the fuel system following the vehicle manufacturer procedure before opening any fuel lines.
- Disconnect the negative battery terminal to avoid sparks and electrical issues.
- Locate the DRV regulator (typically on or near the high-pressure pump/common rail on 2.0 HDi engines).
- Disconnect the electrical connector and any vacuum or fuel return lines.
- Remove mounting fasteners and extract the regulator. Replace sealing O-rings or gaskets with new parts.
- Install the new regulator, torque fasteners to manufacturer specification and reconnect lines and connector.
- Prime the fuel system, check for leaks, clear any fault codes and perform a test run to confirm correct operation.
Technical Information
- Manufacturer: Siemens VDO
- Model: DRV Fuel Pressure Regulator For 2.0 HDi
- Product Codes: A2C59506225; X39-800-300-005Z; 193341
- Other Numbers: Stellantis Fitment (Citroën / Peugeot)
Recommendations For Installation
- Perform work in a well-ventilated area and follow all safety precautions for handling diesel fuel.
- Always depressurize the fuel system before disassembly to avoid fuel spray.
- Replace seals and O-rings when fitting the new regulator to ensure leak-free operation.
- Use proper torque values from the vehicle workshop manual for mounting fasteners.
- After installation, bleed and prime the fuel system, then monitor for leaks and check for stored fault codes with diagnostic equipment.
Why This Part Most Commonly Fails
DRV regulators typically fail because of contamination from dirty fuel (particles or water), degraded internal seals, stuck valve mechanisms or electrical/solenoid wear. Symptoms of a failing regulator include unstable idle, poor acceleration, increased smoke, rough running, engine warning lights and irregular fuel pressure readings. Preventive maintenance—clean fuel filters and ensure clean fuel supply—reduces the likelihood of premature failure.
Symptoms Of Failure
- Rough Idle Or Stalling
- Loss Of Power Under Load
- Increased Smoke Or Higher Fuel Consumption
- Fault Codes Related To Fuel Pressure Or Injector Regulation
- Visible Fuel Leaks Around The Regulator
This Siemens VDO DRV regulator is a direct-fit replacement when the part numbers match. It is suited to workshops and experienced DIYers who can follow manufacturer procedures for safely working on high-pressure diesel systems.
