Remy 20227 Alternator

Remanufactured Alternator for GM S-Series

The Remy Premium Remanufactured 20227 alternator is a 12-volt charging component built for select GM S-Series applications. It delivers 78 amps with an internal voltage regulator, external fan design, clockwise rotation, and pulley included for the specified vehicles.

Compatible with 1984-1985 Chevrolet S10, 1984 Chevrolet S10 Blazer, 1984-1985 GMC S15, and 1984 GMC S15 Jimmy, this alternator supports direct replacement needs for charging-system service. This part cross-references Delco/Delphi applications (e.g., 1105503, 1105504) for the same application.

Key Features

• Remy Premium Remanufactured alternator
• Part number 20227
• 78 amp output for 12-volt systems
• Internal voltage regulator
• External fan type
• Clockwise rotation
• Pulley included
• OE manufacturer reference: Delco/Delphi

Product Details

Remy Premium Remanufactured focuses on remanufactured electrical components built to match the original application requirements. The 20227 alternator is specified for GM S-Series trucks and SUVs from the mid-1980s, including Chevrolet S10 and S10 Blazer as well as GMC S15 and S15 Jimmy. If you are searching for a 1984-1985 Chevrolet S10 alternator or a 1984 GMC S15 Jimmy charging replacement, this unit matches the listed fitment and electrical specifications.

The 78 amp rating, internal regulator, and clockwise rotation are important when replacing a worn charging unit in these vehicles. Using the correct alternator helps maintain stable battery charging and proper electrical system operation in stock-equipment applications.

What This Part Helps Address

• Battery warning light or charging-system warning
• Low battery charge after driving
• Dim lights or unstable electrical output
• Alternator noise from worn internal components
• Failure of the original charging unit

Installation Notes and Tips

Verify the vehicle year, model, and alternator specifications before installation. Confirm 12-volt system requirements, clockwise rotation, internal regulator configuration, and pulley fitment against the original unit. Inspect the belt, wiring connections, and charging circuit before installing the replacement alternator.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured electrical components built for listed OE-style applications. Confirm all fitment details against the original part number 20227 and the vehicle’s charging-system configuration before installation.