WAI 11139N Alternator

Reliable Alternator for Toyota 4Runner and Tacoma

The WAI 11139N alternator is designed to provide consistent electrical charging and starting performance for Toyota 4Runner and Tacoma models. Engineered with an internal fan and regulator, this alternator ensures efficient operation and durability under various driving conditions.

• 12-volt electrical system compatibility
• Internal fan type for effective cooling
• Clockwise (right) rotation direction
• Includes a 7-groove serpentine pulley
• Internal voltage regulator for stable output
• 130 ampere rating suitable for demanding electrical loads
• Compatible with Denso family components

Technical Details and Features

The WAI 11139N alternator features an internal fan that helps maintain optimal operating temperatures, reducing the risk of overheating during extended use. Its clockwise rotation matches the original equipment specifications for Toyota 4Runner and Tacoma vehicles, ensuring proper fit and function. The included pulley has seven grooves designed for serpentine belts, providing reliable power transmission and belt alignment. An internal voltage regulator maintains consistent amperage output at 130 amps, supporting the electrical demands of modern vehicle systems. This alternator is part of the Denso family, known for quality and compatibility with Toyota applications.

Compatible Vehicles and Applications

• Toyota 4Runner requiring a 12V alternator with 130A output
• Toyota Tacoma models needing a clockwise rotation alternator
• Vehicles using serpentine belt systems with 7-groove pulleys
• Applications requiring an internal voltage regulator and fan
• Replacement for original Denso alternators in specified Toyota models

Installation Notes and Tips

When installing the WAI 11139N alternator, ensure the serpentine belt is properly aligned with the 7-groove pulley to prevent premature wear. Verify the rotation direction matches the vehicle’s original alternator to avoid compatibility issues. Since this alternator includes an internal regulator and fan, no additional external components are necessary. It is recommended to check the battery and electrical connections during installation to ensure optimal performance.

Quality Assurance and Warranty

WAI alternators are manufactured to meet OEM standards, providing reliable performance for Toyota 4Runner and Tacoma vehicles. This alternator undergoes rigorous testing to ensure durability and consistent amperage output. Please refer to WAI’s warranty policy for specific coverage details.