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WAI 20305N Alternator
| Brand | WAI 20305N |
|---|---|
| 12 | 12 |
| Fan Type | Internal |
| Rotation Direction | Clockwise (right) |
| Pulley Included | Yes |
| Family | Valeo |
| Pulley Groove Quantity | 6 |
| Pulley Belt Type | Serpentine |
| Regulator Type | Internal |
| Decoupled Or Clutch Pulley | Yes |
| Amperage Rating | 140 |
| Product line | New |
| Fits | Audi and Volkswagen · 9 vehicles |
100% new construction. Not remanufactured, with proprietary components and processes.
140 amp output. Built to supply the electrical demand of modern vehicle systems.
Valeo-based design. Internal regulator, internal fan, and serpentine pulley setup.
Cross-references Four Seasons 20305, Gates 21368 and 03L-903-023-L for the same application. See all 12.
Overview
This WAI alternator, part number 20305N, is a 100% new replacement built to deliver the amperage needed for modern electrical loads. It features an internal regulator, internal fan, and a decoupled clutch pulley for stable charging performance.
Key Features
- 140 amp output for vehicles with higher electrical demand
- 100% new construction, not remanufactured
- Internal regulator and internal fan design
- Serpentine pulley with 6 grooves included
- Clockwise rotation with decoupled clutch pulley
- Valeo family design
Detailed Description
The WAI 20305N alternator is engineered as a new charging component for applications that require consistent electrical output. Its 140 amp rating, internal regulation, and serpentine pulley setup support dependable system charging, while the Valeo-based design aligns with the listed fitment for Volkswagen and Audi applications. This part number 20305N is listed for the Volkswagen Tiguan, Volkswagen Arteon, Volkswagen Atlas, Audi A3, Volkswagen Golf, and Volkswagen Golf SportWagen in the fitments shown.
This part cross-references Four Seasons 20305 and Gates 21368 for the same application.
Common Uses
- Charging system warning lights caused by alternator output issues
- Low battery charging from a failing alternator
- Electrical instability from worn internal charging components
- Noise or pulley-related charging concerns
- Replacement for a unit that no longer maintains proper voltage
Installation Notes
Verify the pulley type, amperage rating, regulator style, rotation direction, and connector details against the original unit before installation. Confirm fitment for the exact Volkswagen or Audi application listed for your vehicle, including the specified Valeo 140 amp and regulator plug details where noted.
Quality Assurance
WAI states that this alternator is manufactured with proprietary components and processes to support long service life and performance. Part number 20305N is a new unit, not a remanufactured assembly.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 2025 | Volkswagen | Tiguan | 2.0L | L4 | With 140 Amp Valeo Alternator, With 1:15 Regulator Plug; New |
| 2020 | Volkswagen | Arteon | — | — | Valeo 140 Amp |
| 2020 | Volkswagen | Atlas | 3.6L | V6 | Valeo 140 Amp |
| 2019 | Volkswagen | Atlas | 3.6L | V6 | Valeo 140 Amp |
| 2018 | Volkswagen | Atlas | 3.6L | V6 | Valeo 140 Amp |
| 2016 | Audi | A3 | 2.0L | L4 | Valeo IR/IF, 140 Amp |
| 2015 | Audi | A3 | 2.0L | L4 | Valeo IR/IF, 140 Amp |
| 2015 | Volkswagen | Golf | 2.0L | L4 | Valeo IR/IF, 140 Amp |
| 2015 | Volkswagen | Golf SportWagen | 2.0L | L4 | — |
| No rows match your filter. | |||||