0445110227
BOSCH 0445110227 Common Rail Injector for Fiat Croma / Alfa 159 / Opel Astra 1.9 JTDm CDTI 16V Euro 4
71793011, 55221024, 93184178, 93190429 F00VC01334 DLLA148P1271 1600 bar Product Overview
The Bosch 0445110227 is an OEM common rail diesel fuel injector engineered for Fiat, Alfa Romeo, and Opel passenger platforms powered by the 1.9 JTDm / CDTI 16V 150hp diesel powerplant (Z19DTH / 939A2.000 / 937A5.000). Calibrated for a peak rail pressure of 1600 bar on Bosch CRI2-16 solenoid architecture, this injector incorporates the precision multi-hole DLLA148P1271 nozzle assembly (Bosch 0433171798) and F00VC01334 balanced control valve mechanism. It complies fully with Euro 4 emissions criteria and provides direct drop-in replacement for Fiat OE references 55198218, 71793011, 55221024, and Opel reference 93184178. Cylinder-specific IMA coding is strictly mandatory upon installation to prevent idle hunting and unmetered cylinder fueling variance.
Always inspect the OE part number stamped on the solenoid body (55198218 / 93184178) prior to replacement. Bosch 0445110227 uses the F00VC01334 valve and DLLA148P1271 nozzle calibrated for 1600 bar. Cylinder IMA code reprogramming is mandatory upon installation.
Compatible Injectors
Vehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Fiat Croma (194) / Bravo II 1.9 D Multijet 16V | 939 A2.000 / 937 A5.000 150hp | 2005-2011 |
| Alfa Romeo 159 (939) / 147 / GT 1.9 JTDm 16V | 939 A2.000 / 937 A5.000 150hp | 2005-2011 |
| Opel Astra H / Vectra C / Zafira B 1.9 CDTI 16V | Z19DTH 150hp | 2004-2010 |
| Saab 9-3 II 1.9 TiD 16V | Z19DTH 150hp | 2004-2011 |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | 0445110227 |
| Brand | Opel / Fiat / Alfa Romeo / BOSCH |
| Type | Complete Injector Assembly (Bosch Common Rail (CRI2-16 solenoid)) |
| OE Number | 55198218 |
| Control Valve Core Spec | F00VC01334 |
| Nozzle Code Core Spec | DLLA148P1271 |
| Injection System | Bosch Common Rail (CRI2-16 solenoid) |
| Operating Pressure Core Spec | 1600 bar |
| Torque Spec | 28 N·m |
| Hold Down Torque | 25 N·m |
| Warranty | 12 Months |
| Emission Standard | Euro 4 |
| Engine Family | Z19DTH / 937A5.000 / 939A2.000 (1.9 CDTI / JTDm 16V) |
| Coding Required | Yes (IMA Code) |
Installation Tips
Tools needed: Flare nut wrench (rail and injector inlet unions), Injector puller / slide hammer kit (if carbon-bonded), Injector seat cleaning brass brush set & industrial vacuum, Seat reaming tool (for restoring carbon-eroded seating faces), Calibrated torque wrench (2 N·m - 50 N·m range), Diagnostic scan tool with IMA/QR coding capability, Digital micrometer / depth gauge for copper washer check
- Relieve Common Rail Residual Pressure: Disconnect the battery ground terminal and use a scan tool to confirm fuel rail residual pressure is below 10 bar before cracking high-pressure fittings.
- Decontaminate Cylinder Head Injector Wells: Clean away heavy dirt slurry and carbon dust around the 1.9 JTDm injector cavities using compressed air and industrial degreaser.
- Label Cylinder Wiring Connectors & Spill Rail: Number each electrical plug; carefully unclip the plastic spill-off return rail clips without fracturing the fragile barbed tees.
- Remove High-Pressure Feed Lines: Loosen rail-to-injector pipe unions using an open-ended flare nut wrench; immediately install clean protective blanking caps on all exposed orifices.
- Withdraw Hold-Down Clamp Fasteners: Back out the M6 hold-down clamp bolts. Discard used bolts; new stretch bolts must always be installed during assembly.
- Extract Injector from Cylinder Head: Pull injector straight upwards. For stuck or coked injectors, attach a slide-hammer puller to the upper body adaptor without applying rotational torque.
- Inspect Seating Face & Extract Old Copper Washer: Verify that the old copper crush washer has not adhered to the base of the bore; extract with a brass pick tool.
- Ream & Vacuum Injector Seating Bore: Clean and ream the copper washer seating face using a specialized brass seat reamer tool and vacuum until bare, flat metal is established.
- Fit New OEM 1.5mm Copper Sealing Washer: Mount a brand-new 1.5mm copper crush washer onto the nozzle shank using high-temperature assembly grease to ensure alignment.
- Lubricate Injector Body with Ceramic Grease: Apply a thin film of approved high-temperature ceramic anti-seize paste to the injector body barrel, keeping the nozzle tip and copper seal completely dry.
- Torque Hold-Down Clamp to Specification: Tighten hold-down clamp bolt with a calibrated torque wrench evenly to 25 N·m.
- Reconnect High-Pressure Lines: Thread union nuts by hand first to prevent cross-threading, then tighten fuel rail and injector inlet unions to 28 N·m.
- Reconnect Spill-Off Rail & Harness Plugs: Snap fuel return lines securely into injector top hats and reconnect wiring harness plugs firmly until tabs lock.
- ECU IMA Trim Code Calibration: Program the individual multi-digit alphanumeric IMA calibration code engraved on the injector solenoid into the corresponding cylinder address in the ECU.
- CRITICAL IMA CODE REGISTRATION: Never crank the engine without programming the new IMA trim code into the ECU map — uncalibrated injectors cause rough idle oscillation and premature DPF clogging.
- CRITICAL COPPER WASHER REPLACEMENT: Always replace the copper crush washer with a genuine 1.5mm specification and install brand-new clamp bolts to prevent combustion gas blow-by.
- SWIRL FLAP & HARNESS PIN CHECK: Check cylinder 3 and 4 injector wiring harness connectors for pin fretting or high resistance, which mimics faulty injector solenoid codes (P0203/P0204).
- HOSPITAL-GRADE FUEL CLEANLINESS: Even 5-micron debris particles can jam the internal F00VC01334 valve needle — leave protective dust caps on until final pipe engagement.
Frequently Asked Questions
Does Bosch injector 0445110227 require ECU coding (IMA code)?
Yes, Bosch injector 0445110227 strictly requires cylinder-specific IMA calibration code programming into the engine control unit (ECU). Each unit has a precision multi-character calibration code laser-etched onto its solenoid housing that defines micro-injection tolerances across idle, pre-injection, and main injection pressure bands. Entering this code via a diagnostic tool (MultiECUScan, AlfaOBD, OP-COM, or Bosch KTS) is mandatory to ensure balanced cylinder contribution and smooth idle.
What are the common symptoms of a failing 0445110227 injector on 1.9 CDTI / JTDm engines?
Primary failure symptoms include extended cranking on cold starts, rattling or clattering combustion knock under load (caused by pilot injection failure), black exhaust smoke during acceleration, hunting idle between 750 and 950 RPM, cylinder misfire trouble codes (P0201 to P0204), and high spill-off leak-back causing rail pressure sag and DTC P0087.
Can I replace 0445110159 with 0445110227 on an Opel Astra H or Alfa 159?
Both 0445110227 and 0445110159 are factory sister SKUs for the 1.9 16V 150hp platform sharing the same 1600 bar CRI2-16 architecture, F00VC01334 valve family, and DLLA148P1271 nozzle. While physically interchangeable, each injector has a unique IMA calibration code. When replacing an older 0445110159 with 0445110227, you must program the new unit's IMA code into the ECU cylinder map to avoid delivery calibration errors.
What tightening torque is required for the hold-down clamp on 0445110227?
The injector hold-down clamp bolt must be tightened to 25 N·m using a calibrated torque wrench. The high-pressure fuel supply pipe union nuts must be torqued to 28 N·m. Never exceed the 25 N·m hold-down specification, as overtightening distorts the injector body and binds the internal needle.
Why is the copper crush washer replacement critical on 1.9 JTDm / CDTI injectors?
The copper washer forms the gas-tight combustion chamber seal against pressures exceeding 150 bar. Reusing a crushed washer leads to combustion gas blow-by, eroding the alloy cylinder head seat and forming heavy black carbon buildup ('black death') that cements the injector body inside the cylinder head well.
Cross-Reference & Compatibility
Sister parts, same-platform variants, and known incompatibilities. Entries marked are reference numbers outside this catalogue — the note still applies, but there is no product page for them here.