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Bosch 0445110391 Diesel Injector
BOSCHPart No: 0445110391
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The Bosch 0445110391 diesel injector is a remanufactured common-rail injector for Fiat / Opel 1.9 JTD / CDTi 150hp engines. Fiat / Opel 1.9 JTD / CDTi 150hp Remanufactured Common Rail Injector.
(per injector)
+ £20 refundable core deposit per injector — refunded when your old unit is returned within 30 days
All prices are shown in GBP (£). International customers are securely charged in GBP via Stripe.
Dispatch within 24h. Free UK delivery.Save 38% vs OEM price
Professionally remanufactured to OEM standards
Ordering a single injector is standard practice.
Need multiple injectors? Simply increase the quantity above.
Every order includes a 12-month workshop warranty, OEM bench-calibration before despatch.
Most 4-cylinder engines use 4 injectors — replace only what your diagnosis confirms.
12-Month Warranty
Included on every remanufactured injector. UK-based support if you ever need it.
Tested Before Dispatch
Flow-tested and calibrated on OEM-grade rigs. Test report on file for every unit.
Free UK Delivery
Mainland tracked dispatch. Order before 2pm for same-working-day pick-up.
Trade buyers: VAT receipt included · Account terms on request · Trusted by UK garages & diesel specialists.
Why Buy From Us
Not sure this is the right injector? Call us on 020 3355 6581
FREE UK Delivery
International Delivery — flat £50 per order
One injector or multiple injectors
Ships Worldwide
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Flat £50 International Shipping
- Royal Mail Tracked
- DPD International
- Secure Packaging
- Tracking Number Included
- 12 Month Warranty
Need more later? We keep stock available for repeat orders.
Engine Intelligence
Fiat / Alfa / Vauxhall 1.9 JTD & CDTI 16v 150 (Z19DTH — Vectra, Astra, 159, Bravo) 192B1000
Common symptoms
- Misfire or judder, often between 1,500–2,200 rpm
- Rough idle with the engine management light on
- Intermittent single-cylinder faults that come and go
- Limp mode / reduced power
- Black smoke under load
Documented failure modes
- Injector wiring / connector faults logging single-cylinder circuit codes (a documented weak point on this engine — especially injector 3)
- Injector back-leak beyond specification
- Nozzle wear causing over-fuelling and smoke
Diagnostic guidance
- On a single-cylinder circuit code, inspect the injector plug and loom first — wiring faults on this engine routinely mimic a failed injector
- If several injector codes appear together, suspect a supply/loom or ECU driver fault rather than multiple simultaneous injector failures
- Clear codes and confirm which returns first before replacing hardware
- Run a comparative leak-off test to separate electrical from hydraulic faults
Fitment note: The 150 hp 16v (Z19DTH / 937A5000 group) uses different injectors from the 120 hp 8v generation — match the reference etched on the injector body before ordering.
Why this injector?
- Fits the 192B1000 engine code used in the Alfa Romeo 147 and related diesel variants.
- Bosch diesel injector — flow-tested and calibrated on common-rail equipment before despatch.
- Commonly specified when investigating rough idle, injector knock, smoke or poor fuel economy on 192B1000 engines.
- 12-month warranty, free UK delivery and no core exchange required.
Bosch 0445110391 1.9 JTDM/CDTi 16v (150hp) Common Rail Injector (Alfa/Fiat/Vauxhall/Saab)
Bosch solenoid common-rail injector for the higher-output 16-valve 1.9 JTDM/CDTi/TTiD (150 hp) engine across Alfa Romeo, Fiat, Vauxhall/Opel and Saab. Bosch exchange 0986435104; OE Fiat/Alfa 55221020 and 55198218. 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 16v.
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 MDI / Saab Tech2) before road test.
- InstallationRenew the copper combustion washer and leak-off seals; torque the clamp to spec.
- MisdiagnosisThis is the 16v 150 hp injector - do not confuse with the 8v 0445110276; confirm the engine code and OE number.
- WarningFix contamination (filter/water/debris) first - the 1.9 16v is sensitive to fuel quality.
- TestingBench-test across delivery and back-leakage points; verify spray pattern before refit.
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.
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Remanufacturing Process
See how our injectors are rebuilt step-by-step in our 3D remanufacturing process video.
Vehicles Compatible With This Bosch Injector
Compatible with Alfa Romeo, Fiat, Saab, Vauxhall engines including 192B1000, 937A5000, 937A4000, 937A8000, 939A2000 and 5 more.
| Make | Model | Engine | Years |
|---|---|---|---|
| Alfa Romeo | 147 | 1.9 JTDM | — |
| Alfa Romeo | 156 | 1.9 JTD | — |
| Alfa Romeo | 159 | 1.9 JTDM | — |
| Alfa Romeo | GT | 1.9 JTD | — |
| Fiat | Bravo | 1.9 MultiJet | — |
| Fiat | Croma | 1.9 JTD | — |
| Fiat | Stilo | 1.9 JTD | — |
| Saab | 9-3 | 1.9 TiD | — |
| Saab | 9-5 | 1.9 TiD | — |
| Vauxhall | Astra | 1.9 CDTi | — |
Vehicles Using This Injector
Compatible Engines
The 0445110391 injector is compatible with the following engines:
Also known as
This injector is sold and listed under the references below. Tap any number to copy it — every reference refers to this same product.
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Compatible Vehicles
This injector fits the following vehicles. Always confirm exact fitment by engine code or registration before ordering.
Product Description
The Bosch 0445110391 diesel injector is a remanufactured common-rail injector for Fiat / Opel 1.9 JTD / CDTi 150hp engines.
Fiat / Opel 1.9 JTD / CDTi 150hp Remanufactured Common Rail Injector.
Common engine code: 192B1000.
Commonly replaced when investigating rough idle, injector knock, excess smoke or poor fuel economy.
Each injector is tested to OEM standards with a 12-month warranty and free UK delivery.
Workshop Information
Installation Notes
- Professional injector coding may be required after installation
- Use calibrated test equipment for verification
- Check engine-specific torque values before installation
Recommended Injector Coding
No injector coding is required for the Bosch unit on most applications — follow the manufacturer fitting procedure.
Replacement Advice
Always renew the copper washers / seals and bleed the fuel system before first start. Replace only the injectors your diagnosis confirms and torque fasteners to the manufacturer's published values.
Professional Installation
We recommend installation by a suitably equipped diesel specialist using calibrated test equipment to verify the fuel system after fitting.
Common Engines Using This Injector
Common Symptoms of a Failed 0445110391 Injector
If your vehicle shows these symptoms, replacing the diesel injector may restore engine performance. A leak-off test can confirm the diagnosis.
Testing & Warranty
All remanufactured injectors are tested using OEM-grade diagnostic equipment to ensure fuel pressure and spray pattern meet manufacturer specifications.
OEM Test Bench Calibration
Flow-tested on Bosch EPS 200 series bench to verify fuel delivery rates at all operating pressures.
Leak-Off Testing
Each injector is tested for return flow to ensure no excess fuel is wasted back to the tank.
Solenoid Calibration
Electrical response time verified to ensure precise injection timing and quantity.
12-Month Warranty
Full replacement or refund covering manufacturing defects under normal use. No quibble.
Frequently Asked Questions
Customer Reviews
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Related Pages
Bosch Fiat / Opel 1.9 JTD / CDTi 150hp — browse compatible engines, vehicles, and injectors
Compatible Engines
Compatible Vehicles
Equivalent Part Numbers
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Cross References
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Workshop Knowledge for This Injector
Common Symptoms
Workshop Guides
Every remanufactured injector includes a 12-month warranty and is bench-tested to OEM spec before dispatch.
Old-unit exchange applies — your core surcharge is refunded when we receive your old injector.
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