0445110391 — Frequently Asked Questions
Verified answers about the Bosch 0445110391 1.9 JTDM/CDTi 16v (150hp) Common Rail Injector (Alfa/Fiat/Vauxhall/Saab).
What is Bosch injector 0445110391?
A Bosch solenoid common-rail diesel injector for the 16-valve 1.9 JTDM/CDTi/TTiD (150 hp) engine used by Alfa Romeo, Fiat, Vauxhall/Opel and Saab. Bosch exchange 0986435104.
Which vehicles use 0445110391?
Alfa Romeo 159/Brera/GT/156, Fiat Bravo/Croma/Stilo, Vauxhall/Opel Astra H/Vectra C/Zafira B 1.9 CDTi 16v and Saab 9-3 1.9 TTiD.
Is it solenoid or piezo?
It is a Bosch solenoid common-rail injector.
How is 0445110391 different from 0445110276?
0445110391 is the 16-valve 150 hp injector; 0445110276 is the 8-valve unit. Confirm the engine code and OE number before fitting.
Does it 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/Alfa 55221020 and 55198218 reference Bosch 0445110391; the Bosch exchange number is 0986435104.
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 16v 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 0445110391 perform like new?
A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan, then coded on fitment.