WAI 8478N Alternator

Reliable Alternator for Ford F-250 and F-350 Super Duty

The WAI 8478N alternator is designed specifically for Ford F-250 Super Duty and F-350 Super Duty trucks. Engineered to meet the electrical demands of these heavy-duty vehicles, this alternator ensures consistent power delivery and reliable performance.

• 12-volt electrical system compatibility
• Internal fan type for efficient cooling
• Clockwise (right) rotation direction
• Includes pulley with 8 grooves for serpentine belt
• Internal voltage regulator for stable output
• Amperage rating of 135 amps to support heavy electrical loads
• Compatible with Ford F-250 Super Duty and F-350 Super Duty models

Technical Details and Features

The WAI 8478N 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 Ford Super Duty trucks, ensuring proper fit and function. The included pulley has 8 grooves designed for serpentine belts, which are common in modern Ford F-250 and F-350 models. An internal voltage regulator maintains consistent electrical output, protecting your vehicle's battery and electrical components. With a 135-amp rating, this alternator supports the high electrical demands of heavy-duty truck applications.

Applications and Problem Solving

• Replaces faulty or worn alternators in Ford F-250 Super Duty and F-350 Super Duty trucks
• Resolves battery charging issues and electrical system failures
• Eliminates dimming or flickering lights caused by inconsistent power supply
• Addresses overheating problems related to alternator cooling inefficiency
• Restores proper serpentine belt operation with included pulley

Installation Notes and Tips

When installing the WAI 8478N alternator, ensure the serpentine belt is properly aligned with the 8-groove pulley to prevent premature wear. Verify the clockwise rotation direction matches your vehicle’s original alternator. Since this alternator includes an internal voltage regulator, no external regulator adjustments are necessary. It is recommended to inspect the battery and electrical connections during installation to ensure optimal performance.

Quality Assurance and Warranty

WAI alternators are manufactured to meet OEM standards for durability and performance. The 8478N alternator undergoes rigorous testing to ensure reliable operation under demanding conditions typical of Ford Super Duty trucks. Please refer to WAI’s warranty policy for specific coverage details.