WAI 13979N Alternator

Reliable Alternator Replacement for Jaguar Vehicles

The WAI 13979N alternator is designed to provide consistent electrical charging and starting performance for select Jaguar models. Engineered with an internal fan and regulator, this alternator supports the demanding electrical systems of luxury vehicles like the Jaguar S-Type and XJ8.

• 12-volt electrical system compatibility
• Internal fan type for efficient cooling
• Clockwise (right) rotation direction
• Includes a 6-groove serpentine pulley
• Internal voltage regulator for stable output
• 140-amp amperage rating suitable for high electrical loads
• Compatible with Denso family alternators

Technical Details and Features

The WAI 13979N alternator features an internal fan that helps maintain optimal operating temperatures, reducing wear and extending service life. Its clockwise rotation matches the original equipment specifications for Jaguar models such as the Super V8 and XKR. The included pulley has six grooves designed for serpentine belts, ensuring proper belt alignment and tension. An internal voltage regulator maintains consistent electrical output, supporting the vehicle's battery and electrical components effectively. Rated at 140 amps, this alternator meets the power demands of luxury Jaguar vehicles equipped with advanced electrical systems.

Compatible Jaguar Models and Applications

This alternator is compatible with a range of Jaguar vehicles, including:

• Jaguar S-Type
• Jaguar Super V8
• Jaguar Vanden Plas
• Jaguar XJ8
• Jaguar XJR
• Jaguar XK
• Jaguar XK8
• Jaguar XKR

Common Issues Addressed by the WAI 13979N Alternator

• Battery not charging properly or draining quickly
• Dim or flickering headlights and interior lights
• Electrical system warning lights on the dashboard
• Unusual noises from the alternator pulley or belt area
• Vehicle stalling or difficulty starting due to electrical failure

Installation Notes and Tips

When installing the WAI 13979N alternator, ensure the serpentine belt is properly aligned with the 6-groove pulley to prevent premature wear. Verify the clockwise rotation direction matches the vehicle’s original alternator. It is recommended to inspect the battery and electrical connections during installation to ensure optimal performance. Professional installation is advised to maintain vehicle electrical system integrity.

Quality Assurance and Warranty

WAI alternators are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The 13979N alternator is part of the Denso family, known for quality electrical components. Please refer to WAI’s warranty policy for specific coverage details.