Infiniti QX50 V9X Injectors

Infiniti QX50 V9X Overview

The Infiniti QX50 with the V9X 3.0 dCi V6 (V9X) engine was produced between 2014 and 2017. This vehicle uses Bosch common rail diesel injectors (primary part number 0445116033) operating at fuel pressures up to 2000 bar. The V9X engine in the Infiniti QX50 produces and of torque. When replacing injectors on the Infiniti QX50 V9X, always use new copper sealing washers and torque to manufacturer specifications. Each injector should be coded to the ECU after fitting.

Compatible Injectors

Common Injector Problems in Infiniti QX50

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  Rough idle and engine vibration — Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
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  Excessive exhaust smoke — Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
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  Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
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  Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
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  Difficult cold starting — Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.

Other V9X Vehicles

Related Pages

Bosch 3.0 dCi V6 (V9X) — browse compatible engines, vehicles, and injectors