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Number 8 marks the part’s position in this exploded view (Volkswagen Tiguan 2.0 4Motion (2017-2024)).
Other diagrams in the gallery may use a different number for the same part.
Product overview
Genuine OEM Volkswagen Voltage Regulator, part number 03L903803B. This component is part of the alternator assembly and is responsible for controlling the output voltage to maintain a stable electrical supply for the vehicle's systems. It is mounted within the alternator housing. Genuine OEM parts are calibrated to precise specifications to ensure optimal battery charging and prevent damage to electrical components.
Catalogue entry: REGULATOR; only to be used for: 04E 903 015 R; 04L 903 021 J.
Technical details
- Category
- Electrical & Wiring
- Country of origin
- Hungary
- Customs (HS) code
- 85118000
- Manufacturer
- Volkswagen
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 7 × 6.8 × 4.2 cm
- Shipping weight
- 102 g
Specifications
As recorded in the manufacturer’s parts catalogue for this part number.
Equipment codes
- T3Y
- T6F
- TL1
- TL8
PR codes identify the factory option a part belongs to; your vehicle’s are listed on the data sticker in the boot well or service booklet.
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
