The fuel feed unit sits inside the fuel tank and combines the electric fuel pump with the level sender float and, on many applications, the pressure regulator and filter strainer into a single serviceable assembly. Its primary function is to maintain a consistent fuel pressure at the injectors regardless of tank level, engine speed, or ambient temperature. Failure typically announces itself as difficult hot starts โ after a long journey, the pump struggles to re-prime against a vapour-locked fuel rail โ or as a spluttering power delivery at high engine loads when demand exceeds the pump's weakened output. On higher-mileage vehicles, the pump motor brushes wear down first, causing intermittent fuel pressure drops that the ECU may interpret as injector faults, sending the car into a confusing cycle of misfire codes. BOSCH supplies a significant share of the original-equipment assemblies across European platforms, while MEAT & DORIA and SIDAT are widely used alternatives that match factory pressure specifications. Because the fuel feed unit is a sealed assembly calibrated to your engine's pressure requirements, using the correct OE number is essential โ an incorrect pressure regulator setting can cause rich running or insufficient rail pressure at altitude.
The OE number for a fuel feed unit is closely tied to the engine variant, fuel system type (petrol or diesel), and tank shape of your specific chassis. Using your vehicle's VIN or make-model-engine selector on this page filters the listing to OE-compatible references only. The number typically appears on a label attached to the top of the outgoing assembly once the tank is drained and the lock ring removed. Verifying this number before ordering prevents the common mistake of fitting a unit calibrated to a different fuel pressure specification.
OEM fuel feed units โ often sourced from BOSCH or equivalent tier-one suppliers โ are manufactured to the vehicle builder's precise pressure and flow specifications. Aftermarket units from MEAT & DORIA, SIDAT, or HOFFER are produced to the same functional standards and carry matching OE references, offering a cost-effective alternative without compromising the fuel system's calibrated output. Very cheap units may use lower-grade pump motors or pressure regulators that deviate slightly from specification, risking rough idle, marginal cold starts, or a shortened service life.
On some platforms the pump module is sold separately and can be swapped within the existing sender housing, which reduces cost. However, on most modern applications the entire assembly โ pump, sender, strainer, and pressure regulator โ is supplied as one unit and is designed to be replaced together. Attempting to graft a replacement pump into a worn housing risks seal misalignment and fuel vapour leaks inside the tank. Check the OE references for your model to determine which configuration applies before ordering.
Difficulty starting when the engine is warm after standing, particularly on a hot day, is a classic early symptom โ the pump can no longer push fuel through the hot lines quickly enough. Intermittent power loss under hard acceleration, a rising idle speed followed by a stall, or repeated misfire codes pointing to lean running are all consistent with declining pump output. A failing level sender will cause the fuel gauge to read inaccurately or stick at a fixed position, and in extreme cases the gauge needle may sweep erratically as the float arm corrodes.
Showing 100 of 6,815 Fuel Feed Unit OE numbers. Enter the OE on the main OE search to jump to any reference.
