Remy 21750 Alternator

Remanufactured Alternator for Buick and Pontiac

Remy 21750 is a premium remanufactured 12-volt alternator built for charging-system replacement on select Buick and Pontiac applications. It delivers 125 amps, uses an internal fan and internal voltage regulator, and includes the pulley for a direct-fit service replacement.

Key Features

• 125-amp amperage rating for OE-style charging output
• Remanufactured unit from Remy Premium Remanufactured
• Internal fan and internal voltage regulator
• 12-volt electrical system application
• Clockwise rotation
• Pulley included
• OE manufacturer reference: Delco/Delphi

Product Details

Remy 21750 is built for drivers replacing a worn alternator on a 2004 Buick Park Avenue, 2003-2004 Buick Rendezvous, 2003-2004 Pontiac Aztek, or 1999-2003 Buick Park Avenue. This alternator is a remanufactured Delco/Delphi-style unit with the correct 125-amp output, internal regulation, and clockwise rotation for the listed vehicles. The Remy Premium Remanufactured line focuses on service replacement parts that match the original electrical architecture of the vehicle, making this part number 21750 a practical choice for charging-system repair.

This part cross-references Delco/Delphi OE numbers such as 10464406 and 10480428 for the same application.

Common Problems This Part Can Address

• Battery warning light or charging-system warning on the dash
• Low battery voltage after driving
• Dim headlights or unstable electrical performance
• Alternator bearing noise or charging failure
• Intermittent electrical issues caused by weak alternator output

Installation Notes and Tips

Verify the vehicle year, make, model, and alternator configuration before installation. Confirm that the replacement unit matches the 12-volt system, 125-amp rating, internal regulator setup, pulley configuration, and clockwise rotation listed for your application. Inspect the battery, belt condition, and charging cables during service to help prevent repeat failures.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to meet the needs of OE-style replacement service. Part number 21750 is specified for the listed Buick Park Avenue, Buick Rendezvous, and Pontiac Aztek applications.