Remy 12790 Alternator

Reliable Alternator for Chevrolet and GMC Vehicles

The Remy Premium Remanufactured Alternator Part Number 12790 is designed to restore charging system performance in select Chevrolet and GMC trucks and vans. Engineered with an internal fan and voltage regulator, this 12-volt alternator delivers a 105-amp output to meet your vehicle's electrical demands.

• Amperage Rating: 105 amps for consistent power supply
• Fan Type: Internal fan for efficient cooling
• Voltage: 12 volts compatible with standard automotive electrical systems
• Rotation Direction: Clockwise rotation for proper fitment
• Voltage Regulator: Internal type for streamlined installation
• Pulley Included: Yes, ready for direct replacement
• OE Manufacturer: Bosch remanufactured to meet original specifications
• Part Status: Superseded to part number 12792

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. Part number 12790 is part of this line, providing a cost-effective alternative to new units while maintaining quality and fitment for Chevrolet and GMC vehicles.

Detailed Product Description

This Remy alternator 12790 is a remanufactured unit originally produced by Bosch, designed specifically for 12-volt electrical systems. Its internal fan design helps maintain optimal operating temperatures, reducing wear and extending service life. The internal voltage regulator simplifies installation and reduces the need for additional components. The included pulley and clockwise rotation ensure compatibility with the original engine setup. This alternator is compatible with Chevrolet Express 1500, 2500, 3500, GMC Savana 1500, 2500, 3500, and various Sierra and Silverado Classic models, making it a versatile replacement option.

Common Applications and Issues Addressed

• Restores charging system functionality in Chevrolet Express and GMC Savana vans
• Replaces failing alternators in Sierra 1500 Classic and Silverado 1500 Classic trucks
• Solves battery drain and electrical system malfunctions caused by worn alternators
• Addresses dimming headlights and electrical accessory failures
• Eliminates charging warning lights and intermittent power loss

Installation Notes and Tips

Ensure the vehicle battery is disconnected before beginning installation to prevent electrical shorts. Verify the clockwise rotation direction matches the original alternator. Since the pulley is included, no additional pulley transfer is necessary. Confirm compatibility with your specific Chevrolet or GMC model and engine configuration prior to installation. Proper torque specifications should be followed when mounting the alternator to avoid damage.

Quality Assurance and Warranty

Remy Premium Remanufactured alternators undergo comprehensive testing to verify electrical output and mechanical integrity. This part is remanufactured to meet original equipment standards, ensuring reliable performance. Please refer to Remy’s warranty policy for coverage details on part number 12790.