Bosch 0445110276 Diesel Injector

On the Fiat / Opel 1.9 JTD / CDTi platform, a failing Bosch 0445110276 injector typically presents as: hard cold starting or stalling shortly after start-up; rough or unstable idle; hesitation / stuttering on acceleration and reduced power; black smoke and unpleasant exhaust smell; limp mode with the engine management light on.

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 on high-mileage engines; nozzle wear causing over-fuelling, smoke and rough running; injector seal leakage — strong diesel smell or visible fuel around the injector area.

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

A P020x circuit code points electrical (injector solenoid or wiring); P0087 points hydraulic — check fuel supply, rail-pressure control and injector leak-off before condemning injectors. Run a comparative leak-off test across all four injectors to isolate a worn unit. Inspect for fuel seepage and diesel smell around the injectors 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 0445110276 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 0445110276 trusted family covers 14 verified vehicle fitments across 5 makes: Alfa Romeo, Fiat, Vauxhall, Saab and Suzuki. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

0445110276 supersedes or cross-references 8 further OE numbers, including 0986435148, 55200259, 55221017, 71794167, 93190429, 95517503, 1571079J50 and 1571079J50000. 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.