United States
Target · Diagram
Find this reference above
Number 4 marks the part’s position in this exploded view (Volkswagen Passat (1997-2000)).
Other diagrams in the gallery may use a different number for the same part.
Product overview
Genuine OEM Volkswagen Voltage Regulator, part number 021903803B. This component regulates the output voltage of the alternator, ensuring a stable electrical supply to all vehicle systems. It is typically located within or attached to the alternator assembly. Manufactured to exact specifications for reliable performance and longevity.
Technical details
- Category
- Sensors & Modules
- Customs (HS) code
- 85118000
- Manufacturer
- Volkswagen
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 18 × 11 × 10 cm
- Shipping weight
- 0.05 kg
Why buy from WW Spares?
- ✓ Genuine OEM inventory sourced directly from factory networks
- ✓ Fitment support from workshop-seasoned parts specialists
- ✓ Global logistics with customs-ready documentation
Need help confirming compatibility? Talk to a specialist
