Bosch 0445110955 Diesel Injector

On the PSA/Ford 1.5 EcoBlue/BlueHDi platform, a failing Bosch 0445110955 injector typically presents as: difficult cold starts or extended cranking; uneven idle with the engine running in surges; loss of power or poor acceleration; excess smoke with rough combustion; engine management / anti-pollution warning when injection quality drops.

When two or more of these appear together, suspect the injector before peripheral systems — a comparative leak-off test and live-data cylinder-balance review will isolate the failed unit without tear-down.

The documented failure modes on this platform are: injector back-leak beyond specification preventing starting rail pressure; nozzle wear degrading idle quality and combustion; fuel contamination damage — high-pressure system tolerances on this euro 6 engine are tight.

Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.

Separate injector faults from the engine's well-documented timing-chain rattle and from SCR/AdBlue faults — the drivability symptoms overlap. Run a comparative leak-off test across all four injectors before condemning one. Check rail pressure requested vs actual in live data on hard-start complaints. Injector coding is required after fitting — follow the manufacturer procedure.

Never condemn a common-rail injector on a fault code alone — codes identify the circuit or cylinder, while leak-off volumes and correction values identify the component.

Each remanufactured 0445110955 is fully stripped, ultrasonically cleaned and inspected; worn components are replaced with OE-grade parts. The rebuilt unit is then calibrated on a common-rail test bench against the manufacturer's specification sheet — delivery, back-leak and response are all verified before the injector is sealed and despatched with its calibration data on file.

Every unit carries a 12-month parts warranty and free UK delivery.

The 0445110955 trusted family covers 29 verified vehicle fitments across 5 makes: Citroen, DS Automobiles, Ford, Peugeot and Vauxhall. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

0445110955 supersedes or cross-references 24 further OE numbers, including 0445110954, 0445110749, 2191087, 2315514, 9820403480, 9828959880, JX6Q9F593AA and JX6Q9F593AB. Always match the reference etched on your failed unit's body — cross-references within a family are verified equivalents, but etched numbers remain the source of truth.