Part #: 13872N

WAI 13872N Alternator

⚙️ 4 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: Jeep, Grand Cherokee
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Reliable Alternator for Jeep Grand Cherokee

The WAI 13872N alternator is designed specifically for Jeep Grand Cherokee models, providing consistent electrical charging and starting performance. Engineered with a 12-volt system and a 132-amp rating, this alternator supports your vehicle's electrical demands efficiently.

  • 12-volt electrical system compatibility
  • Internal fan type for effective cooling
  • Clockwise (right) rotation direction
  • Includes a 6-groove serpentine pulley
  • External regulator type for stable voltage control
  • Non-decoupled clutch pulley design
  • Part of the Bosch family for trusted component standards

Technical Details and Features

The WAI 13872N alternator features an internal fan that helps maintain optimal operating temperatures during vehicle operation. Its clockwise rotation matches the Jeep Grand Cherokee’s engine requirements, ensuring proper function and longevity. The included pulley has six grooves designed for serpentine belts, which are common in modern Jeep Grand Cherokee models. This alternator uses an external regulator type, allowing for precise voltage regulation and consistent electrical output. As a member of the Bosch family, it meets established quality and performance benchmarks.

Compatible Vehicles and Applications

This alternator is compatible with Jeep Grand Cherokee vehicles requiring a 12-volt, 132-amp alternator with a clockwise rotation and serpentine belt pulley system. It is suitable for replacing worn or failing alternators that exhibit issues such as:

  • Battery not charging properly
  • Dimming or flickering headlights
  • Electrical system warning lights on the dashboard
  • Unusual noises from the alternator area
  • Intermittent power loss or starting difficulties

Installation Notes and Tips

When installing the WAI 13872N alternator, ensure the serpentine belt is properly aligned with the 6-groove pulley. Verify the rotation direction matches the vehicle’s engine rotation (clockwise). Since this alternator uses an external voltage regulator, confirm the regulator connections are secure and compatible with your Jeep Grand Cherokee’s electrical system. It is recommended to inspect the battery and wiring harness for any signs of wear or corrosion during installation.

Quality Assurance and Warranty

WAI alternators, including the 13872N model, adhere to strict manufacturing standards consistent with the Bosch family of components. This ensures reliable performance and durability under normal operating conditions. Please refer to the product packaging or manufacturer documentation for specific warranty details.

BrandWAI
Part Number13872N
1212
Fan TypeInternal
Rotation DirectionClockwise (right)
Pulley IncludedYes
FamilyBosch
Pulley Groove Quantity6
Pulley Belt TypeSerpentine
Regulator TypeExternal
Decoupled Or Clutch PulleyNo
Amperage Rating132

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004JeepGrand Cherokee4.0LL6N/ABosch
2003JeepGrand Cherokee4.0LL6N/ABosch
2002JeepGrand Cherokee4.0LL6N/ABosch
2001JeepGrand Cherokee4.0LL6N/ABosch

* 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 0031387256041322AB

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