Remy 20038 Alternator

Remanufactured Alternator for Classic GM Applications

Remy Premium Remanufactured alternator 20038 is a 12-volt charging unit built for older Chevrolet, GMC, Buick, Pontiac, Oldsmobile, and Jeep applications that use a 42-amp output and internal voltage regulation. It includes the pulley and uses a clockwise rotation with an external fan design.

For shoppers searching for a remanufactured alternator for 1980s Chevrolet C10, GMC K1500, or Pontiac Firebird applications, this unit is built around the original Delco/Delphi OE design. Part number 20038 is also a direct reference point for many classic truck and car charging system repairs.

Key Features

• Remy Premium Remanufactured alternator, part number 20038
• 42 amp output for standard electrical loads
• 12-volt system with internal voltage regulator
• External fan and clockwise rotation
• Pulley included
• OE manufacturer reference: Delco/Delphi

Detailed Product Overview

This alternator is designed for vehicles that use a standard 42-amp charging setup, including many Chevrolet C10 and C20 trucks, GMC K-series trucks, and classic passenger cars such as the Chevrolet Camaro, Pontiac Firebird, and Oldsmobile Cutlass. The remanufactured construction restores the unit to service for direct replacement use in compatible applications.

Remy Premium Remanufactured focuses on OE-style electrical components for repair work where correct fitment and original-style operation matter. If you are replacing a worn charging unit on a classic GM platform, 20038 provides the core specifications needed for a proper match: 12 volts, internal regulation, clockwise rotation, and a pulley already in place.

This part cross-references FTE 1100232 and 1103145 for the same application.

Common Problems This Part Can Address

• Low battery charging on older 12-volt vehicles
• Dim lights or weak electrical performance at idle
• Charging system warning caused by a failing alternator
• Noise or wear from an aging alternator assembly
• Replacement needs on classic Chevrolet, GMC, Buick, Pontiac, Oldsmobile, and Jeep models

Installation Notes and Tips

Verify pulley alignment, rotation direction, and regulator style before installation. Confirm that the vehicle uses a 42-amp, 12-volt alternator with internal regulation and no conflicting accessory or AC-related configuration. Fitment includes many no-AC and standard applications, so matching the notes in the vehicle listing is important for correct installation.

Fits 1981-1986 Chevrolet C10, N/A; Fits 1975-1979 Chevrolet C10, N/A; Fits 1985-1986 Chevrolet C10, N/A; Fits 1986 Chevrolet C10, N/A; Fits 1985-1986 Chevrolet C10 Suburban, N/A; Fits 1981-1986 GMC K1500, N/A; Fits 1979 GMC K1500, N/A; Fits 1985-1986 Pontiac Firebird, N/A; Fits 1982-1985 Pontiac Firebird, N/A; Fits 1973-1985 Chevrolet Camaro, N/A.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to OE-based specifications for direct replacement use in listed applications. This alternator is built around Delco/Delphi OE manufacturer architecture for classic GM charging system service.