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Number 1 marks the part’s position in this exploded view (Volkswagen Up! 1.0 BlueMotion (2016-2023)).
Other diagrams in the gallery may use a different number for the same part.
Product overview
Genuine OEM Volkswagen Alternator, part number 04C903023A. This component is responsible for generating electrical power to run the vehicle's systems and recharge the battery while the engine is running. It is typically mounted to the engine block. This alternator features a durable housing and precisely engineered internal components for reliable performance. Genuine OEM alternators are crucial for consistent electrical output and the longevity of your vehicle's electrical system.
Catalogue entry: ALTERNATOR BOSCH.
Fitted with: 04C903023AX ALTERNATOR, 04C903023R ALTERNATOR, 04C903023RX ALTERNATOR, 04C903023B ALTERNATOR, 04C903023BX ALTERNATOR, N01100840 Hexagon nut, N90403004 Cover cap, 4D0971992 HOUSING, 04E903021M ALTERNATOR, 04E903021MX ALTERNATOR, 04E903021N ALTERNATOR, 04E903021NX ALTERNATOR.
Technical details
- Category
- Electrical & Wiring
- Country of origin
- Hungary
- Customs (HS) code
- 85115000
- Manufacturer
- Volkswagen
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 16.5 × 16.5 × 14.5 cm
- Shipping weight
- 5.48 kg
Specifications
As recorded in the manufacturer’s parts catalogue for this part number.
Equipment codes
- TH4
- TJ8
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
Replaces older part numbers
This is the current manufacturer number. Older numbers on this road are no longer supplied.
- 04C903023AXSuperseded
Jul 2025 - 04C903023AThis pageCurrent number
