Remy 21810 Alternator

Remanufactured Ford Alternator for 1987-1992 Applications

The Remy Premium Remanufactured 21810 alternator is a 12-volt charging component built for select Ford trucks and vans from 1987-1992. With a 100 amp amperage rating, external fan, external voltage regulator type, and included pulley, it matches the needs of many Ford F-250, F-350, E-150 Econoline, E-250 Econoline, and E-350 Econoline applications.

This alternator is a remanufactured unit from Remy’s Premium Remanufactured line, focused on OE-style replacement coverage for Ford charging systems. Part number 21810 cross-references Ford OE numbers F0UU-10300-AA and F0UU-10300-BA for the same application.

Key Features

• 100 amp output for Ford charging system service
• 12-volt alternator with clockwise rotation
• External fan design
• External voltage regulator type
• Pulley included
• Remanufactured to Premium Remanufactured specifications
• OE manufacturer listed as Ford

Detailed Description

Remy 21810 is a remanufactured alternator for select Ford light-duty trucks and full-size vans, including 1987-1992 Ford F-250 and F-350, plus 1987-1991 Ford E-Series Econoline and Econoline Club Wagon models. Fitment varies by regulator setup and alternator plug configuration, including applications with external regulation and 3:00 alternator plug orientation. The 100 amp rating supports factory-style charging performance for vehicles equipped with the listed electrical setup.

Compatible With 1987-1992 Ford F-250 and F-350, plus 1987-1991 Ford E-150 Econoline, E-150 Econoline Club Wagon, E-250 Econoline, E-250 Econoline Club Wagon, E-350 Econoline, and E-350 Econoline Club Wagon applications listed in the fitment data. Use the vehicle’s regulator type and plug orientation to confirm the correct match before installation. Part number 21810 is also referenced as a Ford OE replacement for the listed applications.

Common Problems This Part Can Address

• Low battery charging caused by a worn alternator
• Dim lights or electrical instability at idle or under load
• Charging warning light concerns related to alternator output
• Failure from aging internal components in a remanufactured unit
• Fitment issues when replacing an external-regulator Ford alternator

Installation Notes and Tips

Verify the vehicle’s year, model, regulator setup, and 3:00 alternator plug configuration before ordering. Confirm clockwise rotation, 12-volt system requirements, and pulley alignment with the existing belt drive. Because fitment includes multiple Ford truck and van configurations, compare the original unit to the replacement alternator before installation.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured replacement components for OE-style service applications. This alternator is built for the listed Ford fitments and follows the specifications shown for amperage, voltage, fan type, rotation direction, pulley inclusion, and regulator type.