Fiat Fullback 4N15 Injectors

Fiat Fullback 4N15 Overview

The Fiat Fullback with the 4N15 2.4L DI-D MIVEC engine was produced between 2016 and 2019. This vehicle uses DENSO common rail diesel injectors (primary part number 295050-1760) operating at fuel pressures up to 2000 bar. The 4N15 engine in the Fiat Fullback produces and of torque. When replacing injectors on the Fiat Fullback 4N15, 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 Fiat Fullback

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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 4N15 Vehicles

Related Pages

DENSO 2.4L DI-D MIVEC — browse compatible engines, vehicles, and injectors