VW Polo 5 / Golf 5 1.4 & 1.6 Engine Control Unit Box (ECU) – Bosch 03C906057AN is listed as an auto-part option. Confirm fitment, part number and compatibility before purchase, especially where vehicle-specific matching is required.
this part is an essential electronic module responsible for managing engine performance and operational parameters in VW Polo 5 and Golf 5 models with 1.4 and 1.6 engines.
This unit controls critical engine functions by processing input from various sensors to regulate fuel injection, ignition timing, and emissions, ensuring the engine operates efficiently. When considering a replacement, compare the part number, Bosch 03C906057AN, with your existing ECU to confirm compatibility with your vehicle’s engine type.
As a core component of the vehicle’s ECU & Lock Set category, this unit may require professional coding, calibration, or diagnostics to fully integrate with your car’s systems. These processes are not guaranteed by this listing and may need assistance from a specialist.
Buyers should verify the ECU’s part number and engine compatibility when searching for a replacement to ensure proper function within VW Polo 5 or Golf 5 1.4 and 1.6 engine variants.
Need help matching this item to your vehicle? Use more ECU & Lock Set, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.

