Remy 20405 Alternator

Remanufactured Alternator for GM Compact Cars

Remy 20405 is a premium remanufactured 12-volt alternator built for select GM compact cars with air conditioning. It delivers 85 amps, uses an internal voltage regulator, and includes a pulley for direct replacement service. This Remy alternator 20405 is a fit for 1987-1989 Chevrolet Cavalier and other listed applications.

Key Features

• 85 amp amperage rating for OE-style charging output
• 12V alternator with internal voltage regulator
• External fan design
• Pulley included
• Clockwise rotation
• Remanufactured to premium standards
• OE manufacturer reference: Delco/Delphi

Product Details

Remy Premium Remanufactured line focuses on replacement electrical components rebuilt for direct-fit service. Part number 20405 is engineered for vehicles originally equipped with an 85 amp charging system and AC, including 1987-1989 Chevrolet Cavalier, 1987-1988 Chevrolet Corsica, 1987-1988 Oldsmobile Firenza, 1987-1988 Pontiac Tempest, and 1987 Buick Skyhawk. If you are searching for a Remy 20405 alternator for a Chevrolet Cavalier or a Delco/Delphi-style replacement alternator, this unit matches the listed application details.

This part cross-references 1101191 and 1105701 for the same application.

What It Helps Address

• Battery warning light caused by low charging output
• Dim lights or electrical load issues at idle
• Slow battery recovery after starting
• Charging system failure from a worn alternator
• Voltage irregularities in the vehicle electrical system

Installation Notes and Tips

Verify the vehicle’s original amperage rating, pulley configuration, rotation direction, and regulator type before installation. This alternator is listed for clockwise rotation and internal regulation, so matching the original charging system setup is important. Confirm AC-equipped fitment for the specific Chevrolet Cavalier, Chevrolet Corsica, Oldsmobile Firenza, Pontiac Tempest, or Buick Skyhawk application before ordering.

Quality Assurance

As part of Remy’s Premium Remanufactured line, this alternator is remanufactured for replacement use with OE manufacturer reference to Delco/Delphi. It is built to meet the listed electrical and fitment specifications for the stated applications.