OEM Volkswagen Group Engine Control Unit (ECU / ECM) manufactured by Bosch in Germany. Running on the highly dependable Electronic Diesel Control (EDC16U34) system, this unit was cleanly salvaged from a running vehicle and is ready to be adapted.
Part Specifications:VW Part Number: 03G 906 021 QD (03G906021QD) Note: Label shows 03G 906 021 AB on the barcode string, which supersedes/cross-references with QD.Bosch Manufacturer Number: 0 281 014 056 (0281014056)
System Type: EDC16U34 (Diesel Turbo Injection)Engine Suitability: 1.9 TDI Turbo Diesel (DIESEL)
Hardware Version: H07
Vehicle Fitment Guide:This part number is highly sought after for late-2000s 1.9-litre turbo diesel platforms across the Volkswagen range, heavily used in South Africa on:
VW Polo 4 (9N3) 1.9 TDI variants (Approx. 2005–2009)
VW Caddy Mk3 1.9 TDI commercial models (Approx. 2007–2010)
VW Golf 5 / Jetta 5 1.9 TDI models
Note: Electronic compatibility heavily relies on matching part numbers. Please ensure your faulty module matches the 03G 906 021 QD / AB profile exactly before buying.
Fitment Check
RepairMatch™ Fitment
Confirm this part against your vehicle before you order.
Check FitmentOpens fitment page

