/live/media/WW/WW_20571N_FRO.JPG)
WAI 20571N Alternator
| Brand | WAI 20571N |
|---|---|
| 12 | 12 |
| Fan Type | Internal |
| Rotation Direction | Clockwise (right) |
| Family | Bosch |
| Regulator Type | Internal |
| Amperage Rating | 190 |
| Fits | Mercedes-Benz · 15 vehicles |
100% new unit. Not remanufactured, with proprietary components and processes.
190-amp output. Provides the power needed for modern electrical demands.
Internal regulator. Integrated regulation for a cleaner, simpler alternator design.
Cross-references Four Seasons 20571, 0 125 812 010 and 0 125 812 011 for the same application. See all 15.
WAI 20571N Alternator for Mercedes-Benz
The WAI 20571N alternator is a 190 amp, 12-volt charging unit built for Mercedes-Benz applications that demand stable electrical output. It features an internal fan, internal regulator, and clockwise rotation for direct replacement use on listed vehicles.
Key Features
- 190 amp amperage rating for higher electrical demand
- 12-volt alternator for standard vehicle charging systems
- Internal fan design for integrated cooling
- Internal regulator for simplified charging control
- Clockwise (right) rotation
- BOSCH family configuration
- 100% new construction, not remanufactured
Product Details
Built by WAI, part number 20571N is a new alternator engineered to deliver the amp output needed for modern vehicle electrical loads. The unit uses proprietary components and manufacturing processes to support long service life and consistent performance. This alternator is listed for Mercedes-Benz Metris, Mercedes-Benz GLC300, Mercedes-Benz C300, and Mercedes-Benz GLC350e applications with Bosch 190 amp configurations where noted.
This part cross-references Four Seasons 20571 for the same application.
Vehicle Fitment
- Fits 2021-2023 Mercedes-Benz Metris, N/A
- Fits 2020 Mercedes-Benz GLC350e, N/A
- Fits 2018-2020 Mercedes-Benz Metris, N/A, Bosch IR/IF 190 Amp, SC6 pulley
- Fits 2016-2019 Mercedes-Benz GLC300, N/A, Bosch 190 Amp
- Fits 2017-2018 Mercedes-Benz C300, N/A, Bosch 190 Amp
- Fits 2015-2016 Mercedes-Benz C300, N/A
What It Helps Address
- Low charging output from a worn alternator
- Battery warning lights caused by charging system faults
- Dim lights or electrical instability under load
- Accessory performance issues from insufficient amperage
- Starting problems related to weak system charging
Installation Notes and Tips
Verify the vehicle’s original alternator family, amperage rating, pulley style, and rotation direction before installation. This listing includes Bosch 190 amp and SC6 pulley notes on select Mercedes-Benz Metris and GLC300 applications, so matching the OE configuration is important for proper fitment and charging performance.
Quality Assurance
WAI builds this alternator as a 100% new unit rather than a remanufactured part. Its internal regulator and proprietary construction are used to support consistent output and long-term reliability in the listed Mercedes-Benz applications.
| Year | Make | Model | Notes |
|---|---|---|---|
| 2023 | Mercedes-Benz | Metris | — |
| 2022 | Mercedes-Benz | Metris | — |
| 2021 | Mercedes-Benz | Metris | — |
| 2020 | Mercedes-Benz | GLC350e | — |
| 2020 | Mercedes-Benz | Metris | Bosch IR/IF 190 Amp, SC6 pulley |
| 2019 | Mercedes-Benz | GLC300 | Bosch 190 Amp |
| 2019 | Mercedes-Benz | Metris | Bosch IR/IF 190 Amp, SC6 pulley |
| 2018 | Mercedes-Benz | C300 | Bosch 190 Amp |
| 2018 | Mercedes-Benz | GLC300 | Bosch 190 Amp |
| 2018 | Mercedes-Benz | Metris | Bosch IR/IF 190 Amp, SC6 pulley |
| 2017 | Mercedes-Benz | C300 | Bosch 190 Amp |
| 2017 | Mercedes-Benz | GLC300 | Bosch 190 Amp |
| 2016 | Mercedes-Benz | C300 | — |
| 2016 | Mercedes-Benz | GLC300 | Bosch 190 Amp |
| 2015 | Mercedes-Benz | C300 | — |
| No rows match your filter. | |||