0445110351 — Technical Research
Bosch solenoid common-rail injector for the 1.3 MultiJet/JTD/CDTi/DDiS engine used across Fiat, Alfa Romeo, Vauxhall/Opel and Suzuki. Bosch alternate 0986435204; Fiat 55219886; Vauxhall 95517513; Suzuki 1571063P00. Failures are driven by poor fuel filtration, contamination and back-leakage; replacements are coded to the ECU via the injector correction value. 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 0445110351 1.3 MultiJet/JTD/CDTi Common Rail Injector (Fiat/Vauxhall/Suzuki)
Bosch solenoid common-rail injector for the 1.3 MultiJet/JTD/CDTi/DDiS engine used across Fiat, Alfa Romeo, Vauxhall/Opel and Suzuki. Bosch alternate 0986435204; Fiat 55219886; Vauxhall 95517513; Suzuki 1571063P00. Failures are driven by poor fuel filtration, contamination and back-leakage; replacements are coded to the ECU via the injector correction value. 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 1.3 MultiJet.
Excess back-leakage drops cranking rail pressure.
Out-of-range delivery or rail-pressure deviation cuts power.
Poor atomisation over-fuels the cylinder.
Cylinder-specific injector or fuel-metering codes.
- InstallationCode the injector correction value to the correct cylinder with the relevant diagnostic (Fiat Examiner/MES, Vauxhall Tech2/MDI) before road test.
- InstallationRenew the combustion seal and clamp hardware and torque to spec.
- MisdiagnosisRead live correction/back-leakage data to find the weak cylinder before removal.
- WarningFix contamination (filter/water/debris) first - the small 1.3 is sensitive to fuel quality.
- TestingBench-test across delivery and back-leakage points; verify spray pattern.
What is Bosch injector 0445110351?+
A Bosch solenoid common-rail diesel injector for the 1.3 MultiJet/JTD/CDTi/DDiS engine. Bosch alternate 0986435204; Fiat 55219886.
Which vehicles use 0445110351?+
Fiat 500/Panda/Punto/Doblo, Alfa Romeo Mito, Vauxhall/Opel Corsa/Combo/Astra and Suzuki Swift/SX4 1.3 diesel.
Is it solenoid or piezo?+
It is a Bosch solenoid common-rail injector.
What are the OE part numbers?+
Fiat 55219886, Vauxhall/Opel 95517513 and Suzuki 1571063P00 all reference Bosch 0445110351.
Does it need coding?+
Yes - code the injector correction value to the correct cylinder with the relevant diagnostic when fitting.
What are the symptoms of failure?+
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 1.3 MultiJet run rough?+
A worn or leaking injector unbalances fuelling; read live correction data and bench-test the cylinder.
What causes these injectors to fail?+
Poor fuel filtration, contamination and back-leakage wear - fix the cause first.
Do I need to renew the seals?+
Yes - renew the combustion seal and clamp hardware; reused seals cause blow-by.
Does a remanufactured 0445110351 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan, then coded on fitment.