Audi A4 B8 CAGB Injectors
2.0L TDI CR (EA189) | 2008–2015
Engine Code
CAGB
Engine Size
2.0L TDI CR (EA189)
Production
2008–2015
Audi A4 B8 CAGB Overview
The Audi A4 B8 with the CAGB 2.0L TDI CR (EA189) engine was produced between 2008 and 2015. This vehicle uses Bosch common rail diesel injectors (primary part number 0445116030) operating at fuel pressures up to 2000 bar. The CAGB engine in the Audi A4 B8 produces and of torque. When replacing injectors on the Audi A4 B8 CAGB, always use new copper sealing washers and torque to manufacturer specifications. Each injector should be coded to the ECU after fitting.
Compatible Injectors
Bosch 0445116030
0445116030 | 0445116029 | 0445116004 | 0445116005 | 0986435360
£80 inc. VAT
View injectorCommon Injector Problems in Audi A4 B8
- •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.
- •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.
- •Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
- •Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
- •Difficult cold starting — Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.
Other Engine Codes for Audi A4 B8
Other CAGB Vehicles
Related Pages
Bosch 2.0L TDI CR (EA189) — browse compatible engines, vehicles, and injectors