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WAI 11254N Alternator
Reliable Alternator for Volkswagen Bora, Golf, and Jetta
The WAI 11254N alternator is designed to provide consistent electrical charging and starting performance for select Volkswagen models. Engineered with an internal fan and regulator, this alternator supports the demanding electrical needs of the Bora, Golf, and Jetta.
- 12-volt electrical system compatibility
- Internal fan type for efficient cooling
- Clockwise (right) rotation direction
- Includes a 5-groove serpentine pulley
- Internal voltage regulator for stable output
- Decoupled clutch pulley to reduce belt wear and noise
- 140 ampere output rating for reliable power supply
- Compatible with Volkswagen Bora, Golf, and Jetta models
Technical Details and Features
This WAI alternator, part number 11254N, belongs to the Bosch family of components, known for their durability and performance. The internal fan design helps maintain optimal operating temperatures, while the internal regulator ensures consistent voltage output to protect your vehicle’s electrical system. The included pulley features five grooves designed for serpentine belts, matching the factory specifications for Volkswagen vehicles. The clockwise rotation direction aligns with the original equipment setup, ensuring proper fit and function. Additionally, the decoupled clutch pulley reduces vibration and belt stress, contributing to longer belt life and quieter operation.
Applications and Common Issues Addressed
- Restores charging system functionality in Volkswagen Bora, Golf, and Jetta
- Resolves battery drain caused by faulty alternators
- Eliminates dimming or flickering headlights due to inconsistent voltage
- Prevents electrical system failures related to worn or damaged alternators
- Addresses belt noise and premature wear with the decoupled clutch pulley design
Installation Notes and Tips
When installing the WAI 11254N alternator, ensure the serpentine belt is properly aligned with the 5-groove pulley. Verify the rotation direction matches the original alternator to avoid compatibility issues. It is recommended to inspect the belt tensioner and battery condition during installation to maintain optimal charging system performance.
Quality Assurance and Warranty
WAI alternators are manufactured to meet or exceed OEM specifications, providing reliable performance for Volkswagen vehicles. This alternator includes an internal voltage regulator and is built with quality components from the Bosch family. Please refer to the product documentation or supplier for specific warranty details.
| Brand | WAI |
| Part Number | 11254N |
| 12 | 12 |
| Fan Type | Internal |
| Rotation Direction | Clockwise (right) |
| Pulley Included | Yes |
| Family | Bosch |
| Pulley Groove Quantity | 5 |
| Pulley Belt Type | Serpentine |
| Regulator Type | Internal |
| Decoupled Or Clutch Pulley | Yes |
| Amperage Rating | 140 |
This part fits 17 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2014 | Volkswagen | Golf | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2014 | Volkswagen | Jetta | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2013 | Volkswagen | Golf | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2013 | Volkswagen | Jetta | Wagon | 2.5L | L5 | N/A | Bosch 140 Amp |
| 2012 | Volkswagen | Golf | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2012 | Volkswagen | Jetta | Wagon | 2.5L | L5 | N/A | Bosch 140 Amp |
| 2011 | Volkswagen | Golf | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2011 | Volkswagen | Jetta | Wagon | 2.5L | L5 | N/A | Bosch 140 Amp |
| 2010 | Volkswagen | Golf | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2010 | Volkswagen | Jetta | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2009 | Volkswagen | Jetta | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2008 | Volkswagen | Jetta | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2007 | Volkswagen | Jetta | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2006 | Volkswagen | Bora | 2.5L | L5 | N/A | Mexico | |
| 2006 | Volkswagen | Jetta | 2.5L | L5 | N/A | Bosch 140 Amp | |
| 2005 | Volkswagen | Bora | N/A | Mexico | |||
| 2005 | Volkswagen | Jetta | 2.5L | L5 | N/A | Bosch 140 Amp |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.