0445110255 — Technical Research
Bosch CRI2 solenoid common-rail injector for the Hyundai/Kia 1.5 CRDi (D4FA) three-/four-cylinder diesel, fitted to the Accent, Getz, Matrix and Kia Rio. Hyundai/Kia OE number 33800-2A400; Bosch alternates 0445110256 and 0986435152. Per Bosch the main causes of failure are poor fuel filtration, fuel contamination and incorrect installation. Key symptoms: Hard starting / extended cranking; Rough idle and vibration; Black smoke; Loss of power / limp mode. Common failure modes: Ball-seat erosion / internal wear; Corrosion from water in fuel; Nozzle coking / poor atomisation.
Bosch 0445110255 1.5 CRDi (D4FA) Common Rail Injector
Bosch CRI2 solenoid common-rail injector for the Hyundai/Kia 1.5 CRDi (D4FA) three-/four-cylinder diesel, fitted to the Accent, Getz, Matrix and Kia Rio. Hyundai/Kia OE number 33800-2A400; Bosch alternates 0445110256 and 0986435152. Per Bosch the main causes of failure are poor fuel filtration, fuel contamination and incorrect installation. Key symptoms: Hard starting / extended cranking; Rough idle and vibration; Black smoke; Loss of power / limp mode. Common failure modes: Ball-seat erosion / internal wear; Corrosion from water in fuel; Nozzle coking / poor atomisation.
Injector back-leakage drops cranking rail pressure on the 1.5 CRDi, making the engine slow to start, especially cold.
A worn or leaking injector unbalances cylinder fuelling, producing a shaky, uneven idle.
Poor atomisation from a worn nozzle or ball-seat erosion over-fuels the cylinder.
Out-of-range injector delivery triggers reduced performance or limp mode on the D4FA.
Cylinder-specific injector or rail-pressure fault codes stored in the ECU.
Over-fuelling or internal leakage wastes fuel and can fail emissions.
- 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 the new injector.
- InstallationAlways fit a new copper sealing washer and use the correct tightening torque - missing seals or over-torque are common installation faults on the 1.5 CRDi.
- codingEach common-rail injector carries an individual flow-correction (IMA) code that must be written into the ECU after fitting; without coding the engine runs on default trim and may log cylinder-balance 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 the replacement injectors will fail again.
- TestingTest on a Bosch-capable common-rail bench across delivery and back-leakage points before refitting.
What is Bosch injector 0445110255?+
A Bosch CRI2 solenoid common-rail diesel injector for the Hyundai/Kia 1.5 CRDi (D4FA) engine. Hyundai/Kia OE number 33800-2A400; Bosch alternates are 0445110256 and 0986435152.
Which vehicles use 0445110255?+
Hyundai Accent (MC), Getz (TB) and Matrix (FC), and the Kia Rio (JB) 1.5 CRDi, roughly 2005-2011.
Is it solenoid or piezo?+
It is a Bosch solenoid common-rail injector (CRI2 type).
What is the Hyundai/Kia OE number?+
33800-2A400 is the Hyundai/Kia OE number for the 1.5 CRDi (D4FA) injector that crosses to Bosch 0445110255.
What are the Bosch alternate numbers?+
0445110256 and 0986435152 are Bosch alternates for the same injector; 0445110241 and 0445110727 are related Bosch numbers.
What are the symptoms of a failing 0445110255?+
Hard starting, rough idle and vibration, black smoke, loss of power or limp mode, the engine-management light, and higher fuel consumption.
Why does my 1.5 CRDi vibrate at idle?+
A worn or leaking injector unbalances fuelling. Read live correction values and bench-test to confirm the faulty cylinder before replacing.
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 code the injector to the ECU?+
Yes. Each injector has an individual IMA flow-correction code that must be written into the ECU after fitting, or the engine will run on default trim and may log cylinder-balance faults.
Should I replace one or all four?+
Diagnose each with live correction values and a bench test; on high-mileage 1.5 CRDi engines failures often cluster, so check all of them.
Why renew the copper washer?+
It is a one-use crush seal; a missing or reused washer causes blow-by and carbon build-up around the injector.
Does a remanufactured 0445110255 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan to meet original delivery and back-leakage specifications.