Remy 20580 Alternator

Remanufactured Alternator for Cadillac 140 Amp Charging

The Remy Premium Remanufactured 20580 alternator is a 12-volt charging component built for select Cadillac applications that require a 140 amp output. It features an internal voltage regulator, external fan design, clockwise rotation, and an included pulley for direct replacement use.

Compatible with 1991-1995 Cadillac DeVille, 1993 Cadillac 60 Special, 1991-1993 Cadillac Commercial Chassis, 1991-1993 Cadillac Eldorado, 1991-1993 Cadillac Seville, and 1991-1992 Cadillac Fleetwood, this Remy alternator is a fitment-specific replacement for vehicles without a heated windshield.

Key Features

• Remy Premium Remanufactured alternator
• 140 amp amperage rating for select Cadillac charging systems
• 12-volt electrical system application
• Internal voltage regulator
• External fan type
• Clockwise rotation
• Pulley included
• OE manufacturer reference: Delco/Delphi

Product Details

Remy part number 20580 is a premium remanufactured alternator engineered for vehicles originally equipped with a Delco/Delphi-style charging setup. The unit is specified for 140 amp output and uses an internal regulator to manage charging performance within the vehicle’s electrical system. This part cross-references Delco/Delphi applications such as 1101578 and 10463189 for the same application.

For Cadillac DeVille, Eldorado, Seville, Fleetwood, Commercial Chassis, and 60 Special models in the listed years, this alternator supports direct replacement needs where the original configuration calls for a clockwise-rotating, externally cooled unit with pulley included. The Remy 20580 is a practical match for restoring charging output on these Cadillac platforms.

Common Replacement Reasons

• Battery warning light or charging system warning
• Low charging voltage at the battery
• Dim lights or electrical accessories operating inconsistently
• Alternator noise, bearing wear, or charging failure
• Vehicle starting issues caused by insufficient system output

Installation Notes

Verify the vehicle’s original alternator specifications before installation, including amperage rating, rotation direction, regulator type, and pulley configuration. This part is listed for applications without a heated windshield, so confirm the vehicle build details against the fitment notes before ordering. Inspect the belt condition, electrical connectors, and charging cables during replacement to ensure proper system operation.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to meet application-specific requirements for OE-style replacement. The 20580 alternator is built around the original Delco/Delphi design intent for the listed Cadillac applications.