Remy 20445 Alternator

Remanufactured Alternator for GM Compact Cars

Remy Premium Remanufactured Part Number 20445 is an 80 amp alternator built for 12-volt charging systems with an internal voltage regulator. It includes a pulley, uses clockwise rotation, and is configured with an external fan for the listed applications.

Compatible With Chevrolet Cavalier, Chevrolet Corsica, Pontiac Tempest, Buick Skyhawk, and Oldsmobile Firenza applications that match the fitment notes below. Remy 20445 is a direct-fit charging component for vehicles that need a remanufactured Delco/Delphi-style alternator.

Key Features

• 80 amp amperage rating for factory-style charging output
• 12-volt alternator with internal voltage regulator
• Remanufactured unit from Remy Premium Remanufactured
• OE manufacturer reference: Delco/Delphi
• Pulley included
• Clockwise rotation
• External fan design
• Cross-reference part numbers include 1101165 and 10463154

Product Details

Remy 20445 is a remanufactured alternator for select GM compact cars from the late 1980s and early 1990s. It is specified for 80 amp output and 12-volt electrical systems, with an internal regulator to match the original charging architecture used in the listed vehicles. This part number is commonly searched for Chevrolet Cavalier alternator replacement and Chevrolet Corsica alternator replacement needs, as well as Pontiac Tempest, Buick Skyhawk, and Oldsmobile Firenza charging system service. Part number 20445 also appears in interchange listings with OE-style references such as 1101165 and 10463154.

Vehicle Fitment

• Fits 1990-1993 Chevrolet Cavalier, N/A — 80 Amp Alternator; Premium Remanufactured
• Fits 1987-1991 Chevrolet Corsica, N/A — wo/AC; 80 Amps; Premium Remanufactured
• Fits 1987-1991 Pontiac Tempest, N/A — wo/AC; 80 Amps; Premium Remanufactured
• Fits 1988-1989 Buick Skyhawk, N/A — 80 Amp Alternator; Premium Remanufactured
• Fits 1987-1989 Chevrolet Cavalier, N/A — wo/AC; 80 Amps; Premium Remanufactured
• Fits 1987-1988 Oldsmobile Firenza, N/A — wo/AC; 80 Amps; Premium Remanufactured
• Fits 1987 Buick Skyhawk, N/A — wo/AC; 80 Amps; Premium Remanufactured

Common Charging System Issues It Can Address

• 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-related issues tied to a worn alternator pulley

Installation Notes and Tips

Verify the vehicle’s year, make, model, and whether it is equipped without air conditioning where noted before ordering. Confirm pulley alignment, connector style, and clockwise rotation against the original unit before installation. Inspect the battery, belt condition, and charging circuit connections during replacement to help prevent repeat failures.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to restore OE-style fit and function for the listed applications. This alternator is built to Delco/Delphi reference specifications for the vehicles shown.