Description
Used Bosch fuel pressure regulator for 1.4 HDi and 1.6 HDi (TDCi) diesel engines. The regulator controls the fuel rail pressure to ensure accurate fuel metering, supporting efficient combustion and stable engine operation.
Replacing a faulty regulator often restores engine response, reduces fuel consumption and lowers smoke and emissions. This part is suitable for professional mechanics and experienced DIY enthusiasts. The unit is compatible with common PSA installations and is supplied as a used Bosch original.
Common symptoms of a failing fuel pressure regulator include rough idle, loss of power under load, poor fuel economy, excessive black smoke and difficult starting. Typical causes are diaphragm wear, internal valve sticking, contamination from fuel or debris, or deterioration after high mileage or poor fuel quality. Service life varies with operating conditions; failures commonly appear after prolonged service or contamination.
Replacement notes: Always relieve fuel system pressure before disconnecting lines. With the battery disconnected, remove the electrical connector and any vacuum lines, unbolt the regulator from the fuel rail and replace any sealing gasket. Reassemble carefully, check for leaks and verify correct operation. If you are uncertain about the procedure, have the unit fitted by a qualified technician.
Technical Information
Manufacturer: Bosch
Model: Fits Citroën C3, Citroën C3 Picasso, Citroën C4, Citroën C4 Picasso, Citroën Xsara Picasso; Peugeot 307, Peugeot 308, Peugeot 407
Product Codes: 0928400607
Additional Numbers: 1634149380
Before ordering, verify compatibility with your vehicle by VIN or by cross-referencing the part number. Order this Bosch fuel pressure regulator 0928400607 to restore reliable fuel delivery and maintain engine performance.
