WAI 11220N Alternator

Reliable Alternator for Mercedes-Benz Vehicles

The WAI 11220N alternator is designed to provide consistent electrical performance for a range of Mercedes-Benz models. Engineered with an internal fan and regulator, this alternator supports your vehicle's charging system with a 180-amp output and a serpentine belt pulley.

• 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
• 180 amp amperage rating for high electrical demand
• Compatible with multiple Mercedes-Benz models

Technical Details and Features

The WAI 11220N alternator belongs to the Bosch family, ensuring compatibility with original equipment specifications. It features an internal fan that helps maintain optimal operating temperatures, reducing the risk of overheating during extended use. The clockwise rotation direction matches the factory setup for Mercedes-Benz vehicles such as the C280, E350, and SL550. The included pulley has six grooves designed for serpentine belts, which are common in modern Mercedes-Benz engines. An internal voltage regulator maintains consistent electrical output, supporting the vehicle’s battery and electrical components effectively. With a 180 amp rating, this alternator meets the power requirements of luxury and performance models including the G65 AMG and CLS550.

Compatible Mercedes-Benz Models

• Mercedes-Benz C280
• Mercedes-Benz CL500, CL550
• Mercedes-Benz CLK550
• Mercedes-Benz CLS550
• Mercedes-Benz E350, E550
• Mercedes-Benz G65 AMG, G550
• Mercedes-Benz GL450, GL500, GL550
• Mercedes-Benz ML350, ML450, ML500, ML550
• Mercedes-Benz R350
• Mercedes-Benz S450, S550
• Mercedes-Benz SL65 AMG, SL550
• Mercedes-Benz SLK350

Common Issues Addressed by This Alternator

• Battery not charging or frequent battery drain
• Dim or flickering headlights and dashboard lights
• Electrical system warning lights on the dashboard
• Unusual noises from the alternator pulley area
• Failure to start due to insufficient electrical power

Installation Notes and Tips

When installing the WAI 11220N alternator, ensure the serpentine belt is properly aligned with the 6-groove pulley to prevent premature wear. Verify the clockwise rotation direction matches your vehicle’s original alternator. It is recommended to inspect the battery and electrical connections for corrosion or damage before installation. Proper torque specifications should be followed to secure the alternator and avoid mechanical issues.

Quality Assurance and Warranty

This WAI alternator is manufactured to meet OEM standards and is part of the Bosch family of components, known for reliability and durability. While specific warranty details are not provided here, WAI products typically come with a limited warranty covering defects in materials and workmanship. Consult your supplier for exact warranty terms.