0445110470 — Technical Research
Bosch solenoid common-rail injector for the VW Group 2.0 TDI EA288 engine across VW, Audi, Seat and Skoda. Bosch exchange 0986435257; VAG OE 04L130277AE/04L130277K. Closely interchanges with 0445110471 - confirm the full OE suffix and engine code before fitting. Replacements must be coded to the ECU with the injector IMA/IQA correction value. Failures are driven by poor fuel filtration, contamination and back-leakage. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Water-in-fuel corrosion; Nozzle coking.
Bosch 0445110470 2.0 TDI (EA288) Common Rail Injector (VW/Audi/Seat/Skoda)
Bosch solenoid common-rail injector for the VW Group 2.0 TDI EA288 engine across VW, Audi, Seat and Skoda. Bosch exchange 0986435257; VAG OE 04L130277AE/04L130277K. Closely interchanges with 0445110471 - confirm the full OE suffix and engine code before fitting. Replacements must be coded to the ECU with the injector IMA/IQA correction value. Failures are driven by poor fuel filtration, contamination and back-leakage. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Water-in-fuel corrosion; Nozzle coking.
A leaking injector unbalances cylinder fuelling on the 2.0 TDI.
Excess back-leakage drops cranking rail pressure.
Out-of-range delivery or rail-pressure deviation triggers derate.
Poor atomisation over-fuels the cylinder.
Cylinder-specific injector or fuel-metering fault codes.
- InstallationCode the injector IMA/IQA correction value to the correct cylinder with VCDS/ODIS before road test.
- InstallationRenew the combustion seal and clamp/bolt hardware and torque to spec; reused seals cause blow-by.
- Misdiagnosis0445110470 and 0445110471 interchange across listings - confirm the full OE suffix and engine code, not just '2.0 TDI'.
- WarningFix contamination (filter/water/debris) first; EA288 injectors are sensitive to fuel quality.
- TestingBench-test across delivery and back-leakage points; verify spray pattern before refit.
What is Bosch injector 0445110470?+
A Bosch solenoid common-rail diesel injector for the VW Group 2.0 TDI EA288 engine (VW/Audi/Seat/Skoda). Bosch exchange 0986435257; VAG OE 04L130277AE/04L130277K.
Which vehicles use 0445110470?+
VW Golf VII/Passat B8/Tiguan, Audi A4 B8/A6 C7/Q5, Seat Leon and Skoda Octavia III 2.0 TDI (EA288).
Is it solenoid or piezo?+
It is a Bosch solenoid common-rail injector.
Does 0445110470 need coding?+
Yes - code the injector IMA/IQA correction value to the correct cylinder with VCDS/ODIS when fitting.
What is the difference between 0445110470 and 0445110471?+
They are closely interchangeable EA288 injectors; confirm the full OE suffix and engine code before fitting rather than relying on '2.0 TDI' alone.
What are the OE part numbers?+
VAG 04L130277AE and 04L130277K reference Bosch 0445110470; the Bosch exchange number is 0986435257.
What are the symptoms of failure?+
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 2.0 TDI run rough?+
A worn or leaking injector unbalances fuelling; read live correction data and bench-test the weak cylinder.
What causes these injectors to fail?+
Poor fuel filtration, contamination and back-leakage wear - fix the cause first.
Does a remanufactured 0445110470 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan, then IMA-coded on fitment.