0445110476 — Technical Research
Bosch solenoid common-rail injector for the VW Group 1.6 TDI EA288 engine across VW, Audi, Seat and Skoda. VAG OE 04L130277AJ/04L130277G; closely interchanges with 0445110477. Replacements are 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 0445110476 1.6 TDI (EA288) Common Rail Injector (VW/Audi/Seat/Skoda)
Bosch solenoid common-rail injector for the VW Group 1.6 TDI EA288 engine across VW, Audi, Seat and Skoda. VAG OE 04L130277AJ/04L130277G; closely interchanges with 0445110477. Replacements are 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 1.6 TDI EA288.
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 hardware; torque to spec.
- MisdiagnosisConfirm the OE suffix (04L130277AJ/G) and engine code; 0445110477 is the close interchange.
- 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 0445110476?+
A Bosch solenoid common-rail diesel injector for the VW Group 1.6 TDI EA288 engine (VW/Audi/Seat/Skoda). VAG OE 04L130277AJ/04L130277G.
Which vehicles use 0445110476?+
Audi A3 8V, VW Golf VII/Passat B8/Touran, Seat Leon and Skoda Octavia III 1.6 TDI (EA288).
Is it solenoid or piezo?+
It is a Bosch solenoid common-rail injector.
Does 0445110476 need coding?+
Yes - code the injector IMA/IQA correction value to the correct cylinder with VCDS/ODIS when fitting.
What are the OE part numbers?+
VAG 04L130277AJ and 04L130277G reference Bosch 0445110476; 0445110477 is the close interchange and Continental A2C9626040080 is an alternate for the 1.6 TDI.
How is it different from the older 1.6 TDI injector?+
0445110476 is the EA288-generation 1.6 TDI injector; confirm the OE suffix and engine code rather than relying on '1.6 TDI' alone.
What are the symptoms of failure?+
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 1.6 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 0445110476 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan, then IMA-coded on fitment.