Remy 20453 Alternator

Remanufactured Alternator for GM 105-Amp Applications

Remy 20453 is a premium remanufactured 12-volt alternator built for GM charging systems that require a 105-amp output. It uses an internal voltage regulator, clockwise rotation, an external fan, and includes the pulley for a direct replacement on listed Chevrolet and GMC applications.

Key Features

• 105-amp amperage rating for specified GM charging systems
• 12-volt alternator with internal voltage regulator
• Clockwise rotation with external fan design
• Pulley included for the listed application
• Remanufactured to support OE-style replacement needs
• OE manufacturer reference: Delco/Delphi

Product Details

This Remy Premium Remanufactured alternator, part number 20453, is built for direct-fit service on select Chevrolet and GMC trucks and vans from 1991-1993. It is listed for Chevrolet G20, G30, and P30, plus GMC G2500, G3500, and P3500 applications, with additional 1991 Chevrolet Blazer, R1500 Suburban, R2500 Suburban, R3500, V1500 Suburban, V2500 Suburban, V3500, and GMC Jimmy, R1500 Suburban, R2500 Suburban, R3500, V1500 Suburban, V2500 Suburban, and V3500 coverage where the vehicle is equipped for 105 amps. This part cross-references FTE 1102630 for the same application.

What It Helps Address

• Low charging output from a worn alternator
• Battery warning light caused by charging system failure
• Dim lights or electrical instability at idle
• Accessory performance issues tied to insufficient system voltage
• Starting problems related to weak battery recharge

Installation Notes and Tips

Verify the vehicle’s charging system is specified for 105 amps before ordering. Confirm pulley style, rotation direction, and regulator type against the original unit on Chevrolet G20, Chevrolet P30, and GMC P3500 applications, as well as the other listed GM models. Inspect battery condition, belt wear, and charging cables during replacement to help prevent repeat failures.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured replacement components for OE-style service. This alternator is built to Delco/Delphi specifications for the listed applications and is intended for direct replacement where the original unit matches the stated electrical and mounting requirements.