0445110594
0445110594 Bosch VW 1.6 TDI Injector: 03L130277S Data
03L130277S, 03L130277B, 03L130277, 03L130277AX, A2C9626040080, 5WS40539F00VC01383DLLA153P23431600 barVehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Volkswagen Golf VI / Golf Plus 1.6 TDI | CAYB, CAYC 66-77kW, | 2009-2013 |
| Volkswagen Passat B7 1.6 TDI | CAYC 77kW / 105hp, | 2010-2014 |
| Volkswagen Polo V 1.6 TDI | CAYA, CAYB, CAYC 55-77kW, | 2009-2014 |
| Volkswagen Caddy III / Maxi 1.6 TDI | CAYD, CAYE 55-75kW, | 2010-2015 |
| Volkswagen Touran I 1.6 TDI | CAYB, CAYC 66-77kW, | 2010-2015 |
| Audi A1 / A1 Sportback 1.6 TDI | CAYB, CAYC 66-77kW, | 2010-2015 |
| Audi A3 8P / Sportback 1.6 TDI | CAYB, CAYC 66-77kW, | 2009-2013 |
| Skoda Octavia II / Combi 1.6 TDI | CAYC 77kW / 105hp, | 2009-2013 |
| Skoda Fabia II / Roomster 1.6 TDI | CAYA, CAYB, CAYC 55-77kW, | 2010-2014 |
| Seat Leon II / Altea 1.6 TDI | CAYB, CAYC 66-77kW, | 2010-2013 |
| Seat Ibiza IV / ST 1.6 TDI | CAYA, CAYB, CAYC 55-77kW, | 2009-2015 |
Technical Specifications
| Specification | Value |
|---|---|
| INJECTOR TYPE | Common Rail Injector |
| SYSTEM PLATFORM | CRI |
| CONTROL VALVECore Spec | 🔗 Shared Valve (2 assemblies):0445110376 |
| NOZZLE CODECore Spec | |
| OPERATING PRESSURECore Spec |
Frequently Asked Questions
Which Volkswagen, Audi, Skoda, and SEAT 1.6 TDI models use Bosch injector 0445110594?
Bosch 0445110594 is designed for VAG 1.6 TDI common rail engines (engine codes CAYB, CAYC, CAYA, CAYD, CAYE, 55-77 kW, Euro 5). It powers VW Golf VI, Passat B7, Polo V, Caddy III, Touran, Audi A1 and A3 (8P), Skoda Octavia II, Fabia II, Roomster, and SEAT Leon II / Ibiza IV from 2009 to 2015.
What are the genuine VAG OEM part numbers for Bosch 0445110594?
The official VAG part numbers are 03L130277S, 03L130277B, 03L130277, and exchange reference 03L130277AX (Bosch reman 0986435282). These designate the same Bosch CRI2-16 electro-hydraulic injector.
What is the critical tightening torque and bolt procedure for VW 1.6 TDI injectors?
The injector hold-down clamp bolt is a torque-to-yield (TTY) stretch bolt and MUST be replaced every time. Tighten the clamp bolt to 8 N·m + 180° angle. Install a new 1.5 mm copper washer and new rubber dust seal. Reusing the old stretch bolt risks bolt fracture and injector blow-by.
How is Bosch 0445110594 coded into the VAG Simos PCR2.1 ECU?
Input the 7-character IMA calibration code laser-etched on the plastic connector into the engine control unit using VCDS, ODIS, or Bosch KTS diagnostic software. After coding, perform the ECU 'Injector Adaptation / Min-Quantity Learning' procedure on a road test.
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.