Bosch 0445110320 Diesel Injector

On the 1.6L CRDi platform, a failing Bosch 0445110320 injector typically presents as: rough idle that may smooth out at higher revs; knocking or ticking at idle or under light load; hard cold starts, occasionally hard hot starts; black smoke under acceleration or load; reduced power, hesitation or limp mode as the fault worsens.

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 correction values drifting to their compensation limit; injector coding loss after previous work — rough running and knock without a clear stored fault; injector back-leak beyond specification affecting rail pressure.

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

Verify injector coding first — lost or wrong codes cause knock and rough running with no stored fault on this engine. Read injection correction values: a unit at its compensation limit identifies the failing injector. DPF, EGR and fuel-supply restrictions mimic injector faults on the 1.6 CRDi — rule them out before replacing hardware. Register the new injector code after fitting per 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 0445110320 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 0445110320 trusted family covers 4 verified vehicle fitments across 2 makes: Hyundai and Kia. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

0445110320 supersedes or cross-references 3 further OE numbers, including 0445110319, 0986435186 and 338002A900. 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.