Bosch 0445110411 Diesel Injector

On the 1.7L CRDi platform, a failing Bosch 0445110411 injector typically presents as: hard cold starting or extended cranking; rough idle that may improve at higher rpm; hesitation or flat spots under acceleration; black smoke under load; higher fuel consumption; diesel smell or rising oil level in advanced cases.

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: nozzle / needle-seat wear from poor fuel quality causing excessive leak-off and starting problems; injector over-fuelling diluting the engine oil when leakage is advanced; rail-pressure faults that mimic injector failure when actual pressure deviates from target.

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

Compare actual vs target rail pressure in live data first — a pressure-regulator fault mimics injector failure on this engine. Run a leak-off comparison across all four injectors before condemning one. Check the engine-oil level and smell for fuel dilution on suspected leaking injectors. 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 0445110411 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 0445110411 trusted family covers 5 verified vehicle fitments across 2 makes: Hyundai and Kia. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

0445110411 supersedes or cross-references 7 further OE numbers, including 0445110410, 0986435279, 0433172216, 338002A800, 33800-2A800, 338002A960 and 33800-2A960. 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.