Remy 21433 Alternator

Remanufactured Alternator for GM Compact Trucks

Remy Premium Remanufactured alternator Part Number 21433 is a 12-volt, 100-amp charging unit built for direct-fit service on select Chevrolet S10, GMC Sonoma, and Isuzu Hombre applications. It uses an internal fan, internal voltage regulator, clockwise rotation, and includes the pulley for a straightforward replacement.

Key Features

• 100-amp amperage rating for OE-style charging output
• 12-volt alternator with internal voltage regulator
• Internal fan design for compact packaging
• Clockwise rotation
• Pulley included
• Remanufactured to support replacement of worn charging components
• OE manufacturer reference: Delco/Delphi

Product Details

Remy 21433 is a Premium Remanufactured alternator for vehicles originally equipped with Delco/Delphi-style charging systems. It is built for 1998-2003 Chevrolet S10, 1998-2003 GMC Sonoma, and 1998-2000 Isuzu Hombre models, with fitment notes indicating 100 amps and application coverage across various alternator models. This part cross-references 10464085 and 10480252 for the same application. If you are searching for a 1998-2003 Chevrolet S10 alternator or a 1998-2003 GMC Sonoma alternator, Part Number 21433 is the relevant replacement reference to verify against the original unit.

Common Replacement Reasons

• Battery warning light or charging system warning on the dash
• Low charging output at idle or under electrical load
• Dim lights, slow accessory operation, or weak battery recovery
• Noise or wear from a failing alternator bearing or internal component
• Need to replace a damaged or non-functioning factory alternator

Installation Notes and Tips

Verify the original alternator’s amperage, rotation, pulley configuration, and regulator style before installation. Confirm connector and mounting match the removed unit, especially on Chevrolet S10, GMC Sonoma, and Isuzu Hombre applications that may use different alternator variants. Compare the old part number to Remy 21433 and the listed interchange references before final installation.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured charging components built to restore OE-style function for the specified application. OE manufacturer reference to Delco/Delphi helps identify the original system design used on these vehicles.