0445110146 — Technical Research
Bosch first-generation (CRI1) solenoid common-rail injector for the Renault 1.9 dCi (F9Q) engine, shared with the Vauxhall/Opel 1.9 DTi/CDTi and the Nissan-badged Primastar/Interstar. Bosch exchange number 0986435007; Renault OE 8200238528/7700107165/8201408754; Vauxhall/Opel 93169139. Unlike later EDC16/17 injectors this early CRI1 type carries no injector correction (IMA/IQA) code, so it does not require coding when fitted. Failures are driven by poor fuel filtration, contamination and back-leakage wear. 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 0445110146 1.9 dCi/DTi/CDTi (F9Q) Common Rail Injector (Renault/Vauxhall/Nissan)
Bosch first-generation (CRI1) solenoid common-rail injector for the Renault 1.9 dCi (F9Q) engine, shared with the Vauxhall/Opel 1.9 DTi/CDTi and the Nissan-badged Primastar/Interstar. Bosch exchange number 0986435007; Renault OE 8200238528/7700107165/8201408754; Vauxhall/Opel 93169139. Unlike later EDC16/17 injectors this early CRI1 type carries no injector correction (IMA/IQA) code, so it does not require coding when fitted. Failures are driven by poor fuel filtration, contamination and back-leakage wear. 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 dCi F9Q.
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.
- InstallationNo injector coding required on this early CRI1 type - it carries no IMA/IQA correction code, unlike later EDC16/17 injectors. Fit and road-test without trim values.
- InstallationRenew the copper combustion washer and leak-off connectors; torque the clamp/yoke to spec to avoid blow-by.
- MisdiagnosisRead live back-leakage / return-flow data to find the weak cylinder before removal - a single faulty unit can fail the set.
- WarningFix the cause first (fuel filter, water-in-fuel, debris); the F9Q is sensitive to contamination and back-leakage.
- TestingBench-test across delivery and back-leakage points on a Bosch-capable CR tester and verify spray pattern before refitting.
What is Bosch injector 0445110146?+
A Bosch first-generation (CRI1) solenoid common-rail diesel injector for the Renault 1.9 dCi (F9Q) engine, shared with the Vauxhall/Opel 1.9 DTi/CDTi and Nissan Primastar/Interstar. Bosch exchange number 0986435007.
Which vehicles use 0445110146?+
Renault Trafic, Master, Laguna I/II, Megane/Scenic I and Espace IV 1.9 dCi, Vauxhall/Opel Vivaro and Movano 1.9 DTi/CDTi, and the Nissan Primastar/Interstar 1.9 dCi.
Is it solenoid or piezo?+
It is a Bosch solenoid common-rail injector (CRI1 generation).
Does 0445110146 need coding?+
No. This early CRI1 injector carries no IMA/IQA correction code, so it does not require coding when fitted - unlike later EDC16/17 injectors.
What are the OE part numbers?+
Renault 8200238528, 7700107165 and 8201408754, and Vauxhall/Opel 93169139 all reference Bosch 0445110146.
What is the Bosch exchange number?+
The Bosch reman/exchange number is 0986435007; 0445110021 and 0445110056 are alternate Bosch numbers for the same engine family.
What are the symptoms of failure?+
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML, usually from one or more leaking injectors.
Why does my 1.9 dCi run rough or smoke?+
A worn or leaking injector unbalances fuelling; read live back-leakage data and bench-test the suspect cylinder before condemning the set.
What causes these injectors to fail?+
Poor fuel filtration, contamination, water-in-fuel and back-leakage wear - fix the cause first or the new injector will fail again.
Does a remanufactured 0445110146 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Bosch CRI1 plan; because no coding is required it can simply be fitted with new seals and road-tested.