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Bosch AL0921X Alternator
| Brand | Bosch AL0921X |
|---|---|
| Voltage | 14 |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 1 |
| Fan Type | Internal |
| Ground Type | Negative |
| Mounting Configuration Code | Short |
| Rotation Direction | Clockwise (right) |
| One Wire Capable | No |
| Pulley Included | Yes |
| External Regulator Included | Yes |
| Case Color | Silver |
| Regulator Type | Internal |
| Decoupled Or Clutch Pulley | No |
| AC Service Tap | No |
| Case Material | Aluminum |
| Amperage Rating | 140 |
| Mounting Type | Foot-mounted |
| Brushless | No |
| Automotive Item Weight (lbs) | 14.991434 lb |
| New Or Remanufactured | Remanufactured |
| Pulley Type / Belt Type (Alternator) | Na |
| Product line | Alternator (Remanufactured) |
| Fits | Audi and Volkswagen · 30 vehicles |
Remanufactured alternator. Restored and tested for dependable charging performance.
Aluminum case. Lightweight construction helps support durability and heat management.
Internal regulator. Integrated regulation simplifies the charging system setup.
Cross-references 06J903023A, 06K903015A and 06K903024A for the same application. See all 4.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Bosch Remanufactured Alternator AL0921X
Bosch AL0921X is a remanufactured alternator built for 14-volt charging systems and 140-amp output. It is engineered for direct replacement service on select Audi and Volkswagen applications, including Audi A3, Audi S3, Audi TT Quattro, Volkswagen Golf, GTI, and Atlas models.
Key Features
- 14-volt alternator with 140-amp amperage rating
- Remanufactured Bosch alternator for charging system replacement
- Internal regulator with external regulator included
- Internal fan design and clockwise rotation
- Foot-mounted, short mounting configuration
- Aluminum case with silver finish
- Pulley included
- Negative ground design
Product Details
Bosch Premium Alternators are remanufactured, built, and tested to deliver consistent charging performance and dependable operation. The AL0921X uses an internal regulator, internal fan, and clockwise rotation, with a foot-mounted short case design for the listed vehicle applications. This Bosch alternator is a practical replacement for drivers searching for a remanufactured alternator for Audi A3, Volkswagen Golf GTI, or Volkswagen Atlas charging system repair.
This part cross-references Bosch OE numbers 06J903023A and 06K903015A for the same application.
Common Uses
- Restores battery charging after alternator failure
- Addresses low-voltage warning lights and charging system faults
- Replaces a worn or noisy alternator bearing assembly
- Corrects dim lights caused by weak charging output
- Supports stable electrical output for vehicle accessories and engine management
Installation Notes
Verify pulley style, mounting configuration, plug orientation, and rotation direction before installation. This AL0921X alternator is not one-wire capable and uses a negative ground setup. Confirm the vehicle’s charging system specifications and match the listed fitment before replacing the unit.
Quality Assurance
Bosch remanufactured alternators are built and tested to meet application-specific performance requirements. The AL0921X is a remanufactured Bosch charging component designed for reliable service in the listed Audi and Volkswagen applications.
Vehicle Fitment
- Fits 2021 Audi Q3, N/A
- Fits 2018-2020 Volkswagen Atlas, N/A
- Fits 2020 Volkswagen Atlas Cross Sport, N/A
- Fits 2017-2019 Audi S3, N/A
- Fits 2017-2019 Volkswagen Golf Alltrack, N/A
- Fits 2018-2019 Volkswagen Golf R, N/A
- Fits 2017-2019 Volkswagen Golf SportWagen, N/A
- Fits 2017-2018 Audi A3, N/A
- Fits 2015-2018 Audi A3 Quattro, N/A
- Fits 2017-2018 Audi TT Quattro, N/A
- Fits 2017-2018 Audi TTS Quattro, N/A
- Fits 2017-2018 Volkswagen Golf, N/A
- Fits 2017-2018 Volkswagen GTI, N/A
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2021 | Audi | Q3 | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2020 | Volkswagen | Atlas | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2020 | Volkswagen | Atlas Cross Sport | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2019 | Audi | S3 | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2019 | Volkswagen | Atlas | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2019 | Volkswagen | Golf Alltrack | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2019 | Volkswagen | Golf R | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2019 | Volkswagen | Golf SportWagen | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Audi | A3 | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Audi | A3 Quattro | Convertible | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Audi | S3 | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Audi | TT Quattro | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Audi | TTS Quattro | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Volkswagen | Atlas | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Volkswagen | Golf | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Volkswagen | Golf Alltrack | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Volkswagen | Golf R | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Volkswagen | Golf SportWagen | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2018 | Volkswagen | GTI | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Audi | A3 | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Audi | A3 Quattro | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Audi | S3 | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Audi | TT Quattro | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Audi | TTS Quattro | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Volkswagen | Golf | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Volkswagen | Golf Alltrack | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Volkswagen | Golf SportWagen | — | 1.8L | L4 | N/A | Alternator (Remanufactured) |
| 2017 | Volkswagen | GTI | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2016 | Audi | A3 Quattro | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
| 2015 | Audi | A3 Quattro | — | 2.0L | L4 | N/A | Alternator (Remanufactured) |
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