Remy 12938 Alternator

Reliable Alternator for Mercedes-Benz CL550, S450, and S550

The Remy Premium Remanufactured Alternator 12938 is designed to restore proper charging and electrical function in select Mercedes-Benz models. Engineered with an internal fan and voltage regulator, this 12-volt alternator delivers a 220-amp output to meet your vehicle's electrical demands.

• Amperage Rating: 220 amps for consistent power supply
• Fan Type: Internal fan for efficient cooling
• Voltage: 12 volts compatible with standard vehicle systems
• Rotation Direction: Clockwise to match OEM specifications
• Voltage Regulator: Internal for streamlined installation
• Pulley Included for direct replacement
• OE Manufacturer: Bosch for trusted quality and fit

About the Premium Remanufactured Product Line

The Premium Remanufactured line by Remy offers alternators that have been carefully rebuilt to meet or exceed original equipment standards. This process includes thorough testing and replacement of worn components, ensuring reliable performance and durability. The 12938 alternator benefits from this rigorous remanufacturing process, providing a cost-effective alternative to new parts without compromising quality.

Product Details and Specifications

This Remy alternator 12938 is specifically designed for Mercedes-Benz CL550, S450, and S550 models. It features a 220-amp output to support high electrical loads, an internal fan to maintain optimal operating temperatures, and an internal voltage regulator to simplify installation. The clockwise rotation and included pulley ensure compatibility with the original Bosch alternator it replaces.

Common Issues Addressed by This Alternator

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

Installation Notes and Tips

Before installation, verify compatibility with your Mercedes-Benz CL550, S450, or S550 by cross-referencing the part number 12938. Disconnect the battery to prevent electrical shorts. The included pulley and internal voltage regulator simplify replacement, but ensure the alternator is mounted securely and all electrical connections are tight. After installation, test the charging system to confirm proper operation.

Quality Assurance and Warranty

Remy’s Premium Remanufactured alternators undergo comprehensive testing to meet strict quality standards. Each unit is inspected for electrical output, mechanical integrity, and fitment accuracy. While specific warranty details may vary, Remy typically offers coverage to protect against defects in materials and workmanship, providing confidence in the part’s reliability.