Description
Bosch fuel pressure regulator for 1.4 HDi and 1.6 HDi engines. Used in Citroën, Peugeot, Ford, Mazda and Volvo vehicles. Fully functional with warranty.
Product Overview
This Bosch fuel pressure regulator is a direct-fit unit designed for PSA 1.4 HDi and 1.6 HDi diesel engines. It controls fuel rail pressure to ensure correct injector operation and stable engine running under all loads. The regulator is commonly searched by part numbers 0928400575 and 1634149180, making it easy to find for mechanics and DIY technicians servicing Citroën and Peugeot models and other vehicles fitted with PSA-derived diesel units.
Technical Information
- Manufacturer: Bosch
- Model: Fuel Pressure Regulator for 1.4 HDi / 1.6 HDi
- Product Codes: 0928400575, 0928400575 (alternative formatting)
- Additional Numbers: 1634149180, 928400575
Compatible Models
Common applications include Citroën Berlingo, Citroën C3, Citroën C4, Citroën C4 Picasso, Citroën Xsara Picasso, Peugeot 307, Peugeot 407 and Peugeot Partner. The regulator is also used in certain Ford, Mazda and Volvo vehicles that share PSA 1.4/1.6 HDi diesel engines.
Installation Recommendations
- Depressurize the fuel system before starting work to avoid fuel spray.
- Work in a well-ventilated area and avoid open flames or sparks.
- Disconnect the battery where appropriate and follow safe workshop practices.
- Clean the area around the regulator to prevent contamination when removing the unit.
- Replace any O-rings or seals during installation and lightly lubricate them with clean diesel or approved lubricant to ensure a correct seal.
- After fitting, prime the fuel system by cycling the ignition or using the fuel pump, check for leaks, and clear any fuel-pressure related fault codes before a test drive.
How The Part Is Replaced (Overview)
Typical replacement steps: relieve fuel pressure and isolate the battery, remove any engine covers to access the fuel rail, disconnect vacuum/electrical connectors, unbolt and remove the old regulator, fit the new regulator with fresh seals, reconnect hoses and connectors, prime the system and inspect for leaks. Final check should include verifying stable idle and correct fuel pressure under load.
Why This Part Fails
Fuel pressure regulators most commonly fail due to internal diaphragm wear, contamination or clogging from debris in the fuel system, leaking seals or O-rings, and deterioration of the vacuum line or connector. Failure symptoms include rough idle, hard starting, loss of power, increased smoke or fuel consumption and fuel-pressure-related fault codes recorded by the engine control unit. Regular fuel filter changes and clean fuel help extend regulator life.
Notes For Professionals
Ideal for workshops and experienced DIYers who search by part number during diagnosis and repair. Use with standard safety practices for fuel-system work and inspect surrounding components (fuel lines, injectors, vacuum hoses) when replacing the regulator to prevent repeat failures.
