Bosch 0445115025 Diesel Injector

On the 2.2L HDi / TDCi platform, a failing Bosch 0445115025 injector typically presents as: difficult cold starting, especially in low temperatures; unstable idle / engine not running evenly; diesel knock or clatter, particularly when cold or under load; smoke and higher fuel consumption; loss of power and poor acceleration.

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: bosch piezo injectors are highly sensitive to return-line restriction — a blocked return circuit causes rough idle, hard starting and knock without the injector being dead; injector correction values drifting out of range as the unit wears; injector seat seal leakage producing tar-like deposits around the injectors.

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

Check the injector return lines and their filters for blockage before condemning a piezo injector — return restriction mimics injector failure on this engine. Read injector correction values: unusually high corrections identify a worn unit. Rule out rail-pressure control (regulator / relief valve) faults on persistent starting and idle complaints. Inspect wiring and connectors — electrical faults can mimic a bad injector.

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 0445115025 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 0445115025 trusted family covers 7 verified vehicle fitments across 3 makes: Peugeot, Citroen and Ford. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

0445115025 supersedes or cross-references 10 further OE numbers, including 0445115092, 0986435351, 0986435450, 9659228880, 96592288, K9659228880, 1980EF and 1980J8. 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.