Remy 20250 Alternator

Remanufactured 78-Amp Alternator for Classic Jeep and GM Applications

The Remy Premium Remanufactured 20250 is a 12-volt alternator built for older Jeep, Chevrolet, and GMC vehicles that need dependable charging output. With a 78-amp rating, internal voltage regulator, external fan, and included pulley, it matches a wide range of OE-style applications for classic trucks, SUVs, and passenger cars.

Remy’s Premium Remanufactured line focuses on OE-manufacturer-based replacement parts, and this alternator is remanufactured to support direct-fit service on Delco/Delphi applications. Part number 20250 is a practical choice when you need a charging-system replacement for vehicles such as the Jeep Grand Wagoneer, Jeep Wrangler, Chevrolet C10, and GMC K1500.

Key Features

• 78-amp output for 12-volt charging systems
• Remanufactured unit for OE-style replacement service
• Internal voltage regulator for simplified electrical control
• External fan design
• Pulley included
• Clockwise rotation
• OE manufacturer reference: Delco/Delphi

Detailed Description

This Remy alternator is engineered for broad coverage across 1983-1991 Jeep, Chevrolet, and GMC platforms, including many vehicles with or without air conditioning and several heavy-duty truck and van applications. It is a strong fit for owners searching for a 78 amp alternator for Jeep Grand Wagoneer, a replacement alternator for Chevrolet C10 and C20 trucks, or a remanufactured charging unit for GMC K1500 and related models. The 20250 part number also appears in cross-reference listings for multiple OE and aftermarket applications.

This part cross-references 304252 and 1100207 for the same application.

What It Helps Address

• Battery warning lights caused by weak charging output
• Dim headlights or electrical accessories that lose power at idle
• Charging-system failure from a worn alternator
• Voltage instability in older 12-volt electrical systems
• Replacement needs on high-mileage classic Jeep, Chevrolet, and GMC vehicles

Installation Notes and Fitment Tips

• Fits 1984-1991 Jeep Grand Wagoneer, N/A; notes include wo/AC, 78 Amps, and w/AC standard applications.
• Fits 1987-1990 Jeep Wrangler, N/A; also listed for w/9:00 Alt Plug configurations.
• Fits 1983-1986 Chevrolet C10, N/A; verify AC and standard-equipment notes before ordering.
• Fits 1983-1986 GMC K1500, N/A; confirm vehicle equipment and plug orientation.
• Fits 1983-1988 Jeep J10 and J20, N/A; application notes vary by AC and plug position.

Before installation, confirm pulley alignment, rotation direction, plug style, and amperage requirements against the original unit. Because fitment varies by AC, gauge package, and plug location on many of these vehicles, matching the notes in the catalog is important for proper installation.

Quality Assurance

Remy Premium Remanufactured parts are built around OE-manufacturer specifications and remanufacturing standards for service replacement use. This alternator is remanufactured from Delco/Delphi-based applications to support consistent charging performance in compatible classic vehicles.