Remy 21033 Alternator

Remanufactured 105 Amp Alternator for GM Vans

The Remy 21033 is a premium remanufactured alternator built for 12-volt charging systems with a 105 amp rating, internal voltage regulator, and clockwise rotation. It is a direct-fit electrical replacement for select Chevrolet Astro, Chevrolet G10/G20/G30, GMC G1500/G2500/G3500, and GMC Safari applications that require this output level.

Remy Premium Remanufactured parts are rebuilt for charging-system service where OE-style fit and electrical performance matter. This alternator includes the pulley and uses an external fan design, with OE manufacturer reference to Delco/Delphi for application matching.

Key Features

• Part number 21033 premium remanufactured alternator
• 105 amp amperage rating for 12V charging systems
• Internal voltage regulator for simplified electrical control
• Clockwise rotation with pulley included
• External fan design
• OE manufacturer reference: Delco/Delphi
• Cross-reference part numbers include 1101500 and 10463146

Fitment Details

• Fits 1990-1992 Chevrolet Astro, N/A. Not compatible with vehicles with less than 105 amps capacity.
• Fits 1992 Chevrolet G10, N/A. Standard 105 Amp alternator: suitable for various applications.
• Fits 1992 Chevrolet G10, N/A. Not compatible with vehicles with less than 105 amps capacity.
• Fits 1992 Chevrolet G20, N/A. Standard 105 Amp alternator: suitable for various applications.
• Fits 1992 Chevrolet G20, N/A. Not compatible with vehicles with less than 105 amps capacity.
• Fits 1992 Chevrolet G30, N/A. Standard 105 Amp alternator: suitable for various applications.
• Fits 1992 Chevrolet G30, N/A. Not compatible with vehicles with less than 105 amps capacity.
• Fits 1992 GMC G1500, N/A. Standard 105 Amp alternator: suitable for various applications.
• Fits 1992 GMC G1500, N/A. Not compatible with vehicles with less than 105 amps capacity.
• Fits 1992 GMC G2500, N/A. Standard 105 Amp alternator: suitable for various applications.
• Fits 1992 GMC G2500, N/A. Not compatible with vehicles with less than 105 amps capacity.
• Fits 1992 GMC G3500, N/A. Standard 105 Amp alternator: suitable for various applications.
• Fits 1992 GMC G3500, N/A. Not compatible with vehicles with less than 105 amps capacity.
• Fits 1990-1992 GMC Safari, N/A. Not compatible with vehicles with less than 105 amps capacity.

What It Helps Address

• Low charging output on a Chevrolet Astro or GMC Safari
• Battery warning lights caused by alternator failure
• Dim lights or electrical instability at idle
• Charging-system issues on GM G-series vans and trucks
• Replacement needs where a 105 amp Delco/Delphi-style alternator is specified

Installation Notes and Tips

Confirm the vehicle’s required amperage before ordering, since this unit is not compatible with vehicles rated below 105 amps. Verify pulley style, rotation direction, and regulator type against the original alternator on the vehicle before installation. For best results, inspect the battery, belt condition, and charging connections during replacement to avoid repeat charging-system faults.

Quality Assurance

This Remy Premium Remanufactured alternator is rebuilt to meet application-specific charging requirements for select GM vans and trucks. The Remy 21033 is intended as an OE-style replacement for vehicles originally equipped with a Delco/Delphi-type 105 amp alternator.