WAI 13939N Alternator

Reliable Alternator for Nissan Altima and Sentra

The WAI 13939N alternator is designed to provide consistent electrical charging and starting performance for Nissan Altima and Sentra models. Engineered with an internal fan and regulator, this alternator supports efficient operation and durability.

Key Features of the WAI 13939N Alternator

• 12-volt electrical system compatibility
• Internal fan type for effective cooling
• Clockwise (right) rotation direction
• Includes pulley with 6 grooves
• Serpentine belt pulley type
• Internal voltage regulator for stable output
• Decoupled or clutch pulley design to reduce belt wear
• 110 ampere amperage rating suitable for standard electrical loads
• Part of the Hitachi family of components

Detailed Product Description

The WAI 13939N alternator is specifically engineered for Nissan Altima and Sentra vehicles, ensuring compatibility and reliable performance. Featuring an internal fan, this alternator maintains optimal operating temperatures by efficiently dissipating heat during operation. The clockwise rotation direction matches the original equipment specifications for these Nissan models. The included pulley has six grooves designed for serpentine belts, which are common in modern engine configurations. An internal voltage regulator maintains consistent electrical output, protecting your vehicle's electrical system from voltage fluctuations. Additionally, the decoupled or clutch pulley reduces stress on the belt system, enhancing longevity and reducing noise.

Common Applications and Issues Addressed

• Replacement for failing or worn alternators in Nissan Altima and Sentra
• Resolves charging system failures causing battery drain
• Addresses electrical system malfunctions due to voltage irregularities
• Eliminates belt slippage and noise related to pulley wear
• Improves starting reliability and overall electrical performance

Installation Notes and Tips

When installing the WAI 13939N alternator, ensure the serpentine belt is properly aligned with the 6-groove pulley. Verify the rotation direction matches the vehicle’s original alternator to avoid compatibility issues. Check electrical connections and ground points for corrosion or damage before installation. It is recommended to test the charging system after installation to confirm proper operation.

Quality Assurance and Warranty

WAI alternators, including part number 13939N, are manufactured to meet or exceed OEM standards. This alternator is part of the Hitachi family, known for quality and reliability in automotive electrical components. Warranty coverage details should be confirmed at the point of purchase, as they may vary.