Remy 20158 Alternator

Remanufactured Ford Alternator for Classic Applications

Restore charging performance with the Remy Premium Remanufactured 20158 alternator. This 12-volt, 70-amp unit is built for Ford applications that use an external voltage regulator, clockwise rotation, and an included pulley for proper belt drive alignment.

Built for a range of Ford, Lincoln, and Mercury vehicles, the Remy 20158 is a direct-fit replacement for many classic truck and car charging systems, including Ford Bronco, F-150, F-250, F-350, Mustang, and Econoline van applications.

Key Features

• Remy Premium Remanufactured alternator, part number 20158
• 70-amp amperage rating for 12-volt charging systems
• External fan design
• External voltage regulator type
• Clockwise rotation
• Pulley included
• OE manufacturer: Ford
• Remanufactured construction for OE-style replacement service

Product Details

The Remy 20158 alternator is a remanufactured charging component for Ford-based electrical systems that require an external regulator and a 70-amp output. It is listed across a wide range of fitments, including 1972-1989 Ford Bronco, 1976-1985 Ford F-150, 1977-1985 Ford F-250, 1976-1985 Ford F-350, 1979-1985 Ford Econoline vans, and 1982-1985 Ford Mustang. Additional coverage includes select Lincoln Continental, Lincoln Mark VII, Mercury Capri, Mercury Cougar, Mercury Zephyr, and Mercury Sable applications. This part cross-references Ford service numbers such as D2AF-10300-EA and D7OF-10300-AA for the same application.

Common Problems This Part Can Address

• Low battery charging caused by a worn alternator
• Dim lights or unstable electrical output
• Charging system warning symptoms on older Ford vehicles
• Belt-drive issues related to a missing or incorrect pulley
• Replacement needs for external-regulator Ford charging systems

Installation Notes and Tips

• Verify the vehicle uses an external voltage regulator before ordering.
• Confirm alternator plug orientation and mounting style, especially on Ford Bronco, F-150, F-250, F-350, and Econoline applications.
• Check belt alignment and pulley condition during installation.
• Inspect wiring, grounds, and regulator connections before final startup.
• Match the original 12-volt, 70-amp charging specification to the vehicle’s electrical setup.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to serve as OE-style replacements for Ford charging systems. The 20158 alternator is built around the listed electrical and mounting specifications to support proper fitment in confirmed applications.