Remy 20581 Alternator

Remanufactured Alternator for Cadillac Charging Systems

Remy 20581 is a premium remanufactured 12-volt alternator built for Cadillac applications that require 140 amps of output. It uses an internal voltage regulator, external fan design, clockwise rotation, and includes the pulley for a direct replacement setup.

Compatible with select Cadillac DeVille, 60 Special, Commercial Chassis, Eldorado, Seville, and Fleetwood models, this alternator is a fitment-based replacement for vehicles equipped with a heated windshield. Remy 20581 is also a direct interchange for OE-style part numbers used in the same applications.

Key Features

• 140 amp amperage rating for factory-style charging output
• 12-volt remanufactured alternator
• Internal voltage regulator for integrated control
• External fan design
• Pulley included
• Clockwise rotation
• OE manufacturer reference: Delco/Delphi
• Premium Remanufactured product line from Remy

Detailed Product Overview

Remy 20581 is a remanufactured alternator engineered for Cadillac electrical systems that call for a 140 amp unit. The Premium Remanufactured line focuses on OE-style replacement coverage, making this part a practical choice for restoring charging performance on 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 models with a heated windshield. This part cross-references OE-style numbers such as 1101579 and 10463190 for the same application.

Common Problems This Part Can Address

• Low battery charging caused by a worn alternator
• Dim lights or electrical instability from weak output
• Charging system warning lights related to alternator failure
• Voltage irregularities from a failing internal regulator
• Reduced charging performance in heated windshield-equipped Cadillac models

Installation Notes and Tips

• Verify the vehicle uses the heated windshield configuration listed in the fitment data.
• Confirm pulley alignment, belt condition, and connector style before installation.
• Check battery condition and charging circuit integrity after replacement.
• Match the alternator rotation, voltage, and amperage rating to the original unit.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to OE-style specifications for direct replacement use. Remy 20581 is built around Delco/Delphi OE manufacturer references and application-specific fitment for Cadillac charging systems.