Audi Q7 (4L) CASA Injectors

Audi Q7 (4L) CASA Overview

The Audi Q7 (4L) with the CASA 3.0L V6 TDI engine was produced between 2007 and 2015. This vehicle uses Bosch common rail diesel injectors (primary part number 0445116022) operating at fuel pressures up to 2000 bar. The CASA engine in the Audi Q7 (4L) produces and of torque. When replacing injectors on the Audi Q7 (4L) CASA, 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 Audi Q7 (4L)

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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 CASA Vehicles

Related Pages

Bosch 3.0L V6 TDI — browse compatible engines, vehicles, and injectors