Part #: 11254N

WAI 11254N Alternator

⚙️ 17 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Volkswagen, Bora, Golf, and Jetta
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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.

BrandWAI
Part Number11254N
1212
Fan TypeInternal
Rotation DirectionClockwise (right)
Pulley IncludedYes
FamilyBosch
Pulley Groove Quantity5
Pulley Belt TypeSerpentine
Regulator TypeInternal
Decoupled Or Clutch PulleyYes
Amperage Rating140

This part fits 17 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2014VolkswagenGolf2.5LL5N/ABosch 140 Amp
2014VolkswagenJetta2.5LL5N/ABosch 140 Amp
2013VolkswagenGolf2.5LL5N/ABosch 140 Amp
2013VolkswagenJettaWagon2.5LL5N/ABosch 140 Amp
2012VolkswagenGolf2.5LL5N/ABosch 140 Amp
2012VolkswagenJettaWagon2.5LL5N/ABosch 140 Amp
2011VolkswagenGolf2.5LL5N/ABosch 140 Amp
2011VolkswagenJettaWagon2.5LL5N/ABosch 140 Amp
2010VolkswagenGolf2.5LL5N/ABosch 140 Amp
2010VolkswagenJetta2.5LL5N/ABosch 140 Amp
2009VolkswagenJetta2.5LL5N/ABosch 140 Amp
2008VolkswagenJetta2.5LL5N/ABosch 140 Amp
2007VolkswagenJetta2.5LL5N/ABosch 140 Amp
2006VolkswagenBora2.5LL5N/AMexico
2006VolkswagenJetta2.5LL5N/ABosch 140 Amp
2005VolkswagenBoraN/AMexico
2005VolkswagenJetta2.5LL5N/ABosch 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:

0 124 525 0620 124 525 1020 124 525 57107K-903-023A07K-903-023AX11254

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.