Remy 20502 Alternator

Remanufactured Alternator for GM 105-Amp Applications

Remy 20502 is a premium remanufactured alternator built for 12-volt charging systems that require 105 amps, an internal voltage regulator, and clockwise rotation. It includes the pulley and uses an external fan design, making it a direct-fit charging component for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles.

Key Features

• 105-amp amperage rating for specified charging-system applications
• 12-volt alternator with internal voltage regulator
• Clockwise rotation
• External fan design
• Pulley included
• Premium remanufactured construction
• OE manufacturer reference: Delco/Delphi

Product Details

Remy Premium Remanufactured 20502 is built for drivers replacing a worn charging unit in older GM platforms that use a 105-amp alternator specification. This alternator is listed for 1987-1992 Buick Century, 1990-1992 Chevrolet Lumina, 1987-1992 Oldsmobile Cutlass Ciera, 1987-1992 Oldsmobile Cutlass Cruiser, 1987-1991 Pontiac 6000, and 1987-1990 Chevrolet Celebrity. This part cross-references Delco/Delphi-style applications for the same use case. The Remy 20502 part number is also referenced across multiple OE-style interchange numbers for service replacement identification.

What It Helps Address

• Low battery charging caused by a failing alternator
• Dim lights or electrical instability at idle or under load
• Battery warning light triggered by charging-system faults
• Noise or bearing wear from an aging alternator assembly
• Charging output loss in 105-amp GM applications

Installation Notes and Tips

Verify that the vehicle uses a 105-amp charging system before ordering. Confirm pulley alignment, connector style, rotation direction, and regulator type against the original unit. For best results, inspect the battery, drive belt, belt tension, and charging cables before installing the alternator. This helps prevent repeat charging-system issues after replacement.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to service OE-style charging applications and are identified here with Delco/Delphi as the OE manufacturer reference. Use the listed fitment and electrical specifications to confirm application match before installation.