0445110239 — Technical Research
Bosch solenoid common-rail injector for the PSA DV6 1.6 HDi engine, also used as 1.6 TDCi (Ford), 1.6 MZ-CD (Mazda), 1.6 Multijet (Fiat) and 1.6 DDiS (Suzuki). Bosch alternate number 0986435122. Main failure causes per Bosch are poor fuel filtration, fuel contamination and incorrect installation. Key symptoms: Misfiring and idling vibration; Starting problems / hard cold start; Black smoke; Poor performance / loss of power. Common failure modes: Ball-seat erosion / internal wear; Corrosion from water in fuel; Nozzle coking / poor atomisation.
Bosch 0445110239 1.6 HDi / TDCi (DV6) Common Rail Injector
Bosch solenoid common-rail injector for the PSA DV6 1.6 HDi engine, also used as 1.6 TDCi (Ford), 1.6 MZ-CD (Mazda), 1.6 Multijet (Fiat) and 1.6 DDiS (Suzuki). Bosch alternate number 0986435122. Main failure causes per Bosch are poor fuel filtration, fuel contamination and incorrect installation. Key symptoms: Misfiring and idling vibration; Starting problems / hard cold start; Black smoke; Poor performance / loss of power. Common failure modes: Ball-seat erosion / internal wear; Corrosion from water in fuel; Nozzle coking / poor atomisation.
A worn or leaking injector under/over-fuels its cylinder, causing a rough, vibrating idle.
Back-leakage lowers cranking rail pressure on the DV6.
Poor atomisation from a worn nozzle or ball-seat erosion.
Out-of-range injector delivery triggers reduced performance or limp mode.
Cylinder-specific injector or rail-pressure fault codes.
Over-fuelling or leakage wastes fuel.
- InstallationPer Bosch, the main causes of failure are poor filtration, fuel contamination and incorrect installation - replace the fuel filter and check for water/debris before fitting.
- InstallationAlways fit a new copper sealing washer and use the correct tightening torque - missing seals or over-torque are common installation faults.
- MisdiagnosisRead live injector correction values to find the weak cylinder before removal rather than replacing all injectors blind.
- WarningWater-in-fuel causes corrosion and ball-seat erosion - address the contamination source or new injectors will fail again.
- TestingTest on a Bosch-capable common-rail bench across delivery and back-leakage points.
What is Bosch injector 0445110239?+
A Bosch solenoid common-rail diesel injector for the PSA DV6 1.6 HDi engine, also used as 1.6 TDCi, 1.6 MZ-CD, 1.6 Multijet and 1.6 DDiS. Bosch alternate number 0986435122.
Which vehicles use 0445110239?+
Peugeot 207/307/Partner/Expert, Citroen C3/C4/Berlingo, Ford Focus/C-Max/Fiesta/Fusion, Mazda 2/3, Fiat Scudo and Suzuki SX4 1.6 diesel.
Is it solenoid or piezo?+
It is a Bosch solenoid common-rail injector.
What is the Bosch alternate number?+
0986435122 is the alternate Bosch number for the same injector; 0445110282 is a related alternate.
What OE numbers cross to 0445110239?+
Ford 3M5Q-9F593-HB, PSA 1980H2, Mazda Y605-13H50-B and Suzuki 15310-69K00, among others.
What are the symptoms of a failing 0445110239?+
Misfiring, idling vibration, hard starting, black smoke, loss of power, MIL on and higher fuel consumption.
Why does my 1.6 HDi vibrate at idle?+
A worn or leaking injector unbalances fuelling. Read live correction values and bench-test to confirm the faulty cylinder.
What causes these injectors to fail?+
Per Bosch, poor fuel filtration, fuel contamination (including water) and incorrect installation - so fix the cause, not just the injector.
Do I need to replace the fuel filter when fitting injectors?+
Yes - poor filtration is a leading cause of failure, so replace the filter and clear any contamination to protect the new injectors.
Should I replace one or all four?+
Diagnose each with live correction values and a bench test; on high-mileage DV6 engines failures often cluster, so check all four.
Why renew the copper washer?+
It is a one-use crush seal; missing seals or reuse cause blow-by and carbon build-up around the injector.
Does a remanufactured 0445110239 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan to meet original delivery and back-leakage specs.