Remy 20599 Alternator

Remanufactured 105 Amp Alternator

Remy 20599 is a premium remanufactured 12-volt alternator built for charging-system service on select Isuzu, Chevrolet, and GMC applications. It features a 105 amp amperage rating, internal voltage regulator, clockwise rotation, external fan design, and an included pulley for OE-style replacement.

Key Features

• 105 amp output for standard charging-system requirements
• 12V alternator with internal voltage regulator
• Clockwise rotation with external fan design
• Pulley included for direct replacement setup
• Premium remanufactured construction
• OE manufacturer reference: Delco/Delphi

Product Details

Built under Remy’s Premium Remanufactured line, this alternator is remanufactured to serve as a replacement for OE-style charging systems that use a Delco/Delphi design. Remy 20599 cross-references Champion Spark Plug 409 and is listed against multiple OE and aftermarket numbers, including 1101259 and 1102617. It is a direct-fit charging component for vehicles such as the Chevrolet S10, GMC Sonoma, and Isuzu Pickup where the application calls for a 105 amp alternator.

Compatible With 1991-1994 Isuzu Pickup, N/A; 1987-1993 Chevrolet S10, N/A; 1991-1993 GMC Sonoma, N/A; 1991-1992 Isuzu Rodeo, N/A; 1989-1991 Isuzu Trooper, N/A; 1987-1990 GMC S15, N/A; 1987-1989 Chevrolet S10 Blazer, N/A; and 1987-1989 GMC S15 Jimmy, N/A.

Common Charging Issues This Part Addresses

• Low battery charging caused by a worn alternator
• Dim lights or electrical output loss at idle
• Battery warning light triggered by charging-system failure
• Voltage instability from a failing internal regulator
• Noise or belt-drive issues related to alternator wear

Installation Notes and Tips

Verify the vehicle’s charging-system specification before ordering, since some Chevrolet S10, GMC S15, and GMC Sonoma applications require a 105 amp unit. Confirm pulley style, rotation direction, and regulator type against the original part before installation. Inspect the belt, battery condition, and charging cables during replacement to help prevent repeat failures.

Quality Assurance

Remy Premium Remanufactured parts are rebuilt to meet OE-style service requirements for electrical replacement applications. This alternator is based on a Delco/Delphi design and is intended for dependable charging-system restoration on the listed vehicles.