0445110276 — Technical Research
Bosch solenoid common-rail injector for the GM/Fiat 1.9 JTD/CDTi/TiD/JTDM/DDiS engine across Fiat, Vauxhall/Opel, Saab, Alfa Romeo and Suzuki. Bosch exchange 0986435148; OE Fiat 55200259/55221017, Vauxhall/Opel 93190429, Suzuki 15710-79J50. Replacements are coded to the ECU via the injector 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 0445110276 1.9 JTD/CDTi/TiD/DDiS Common Rail Injector (Fiat/Vauxhall/Saab/Alfa/Suzuki)
Bosch solenoid common-rail injector for the GM/Fiat 1.9 JTD/CDTi/TiD/JTDM/DDiS engine across Fiat, Vauxhall/Opel, Saab, Alfa Romeo and Suzuki. Bosch exchange 0986435148; OE Fiat 55200259/55221017, Vauxhall/Opel 93190429, Suzuki 15710-79J50. Replacements are coded to the ECU via the injector 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 1.9 JTD/CDTi.
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 MES / Vauxhall Tech2-MDI / Saab Tech2) before road test.
- InstallationRenew the copper combustion washer and leak-off seals; torque the clamp to spec.
- MisdiagnosisRead live correction/back-leakage data to find the weak cylinder before removal.
- WarningFix contamination (filter/water/debris) first - the 1.9 CR is sensitive to fuel quality.
- TestingBench-test across delivery and back-leakage points; verify spray pattern before refit.
What is Bosch injector 0445110276?+
A Bosch solenoid common-rail diesel injector for the 1.9 JTD/CDTi/TiD/JTDM/DDiS engine used by Fiat, Vauxhall/Opel, Saab, Alfa Romeo and Suzuki. Bosch exchange 0986435148.
Which vehicles use 0445110276?+
Alfa 147 1.9 JTDM, Fiat Bravo/Doblo/Multipla 1.9 JTD, Vauxhall/Opel Astra H/Zafira B 1.9 CDTi, Saab 9-3 1.9 TiD and Suzuki SX4 1.9 DDiS.
Is it solenoid or piezo?+
It is a Bosch solenoid common-rail injector.
Does 0445110276 need coding?+
Yes - code the injector correction value to the correct cylinder with the relevant diagnostic when fitting.
What are the OE part numbers?+
Fiat 55200259/55221017, Vauxhall/Opel 93190429 and Suzuki 15710-79J50 reference Bosch 0445110276; the Bosch exchange number is 0986435148.
Does it fit both 8v and 16v 1.9 engines?+
It covers the 1.9 JTD/CDTi family including Z19DT/Z19DTL and Z19DTH variants - confirm the engine code and OE number before fitting.
What are the symptoms of failure?+
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 1.9 CDTi 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 0445110276 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan, then coded on fitment.