MPA Electrical 8221604 Alternator

Remanufactured 145 Amp Alternator for Chevrolet P30 and GMC P3500

MPA Electrical part 8221604 is a remanufactured 12-volt alternator built for charging-system service on select Chevrolet P30 and GMC P3500 applications. It uses a Delco-style design with an internal regulator, external fan, clockwise rotation, and a 6-groove serpentine pulley for the specified fitments.

Key Features

• 145 amp output for select heavy-duty charging applications
• 12-volt alternator with internal regulator
• External fan design
• Clockwise rotation
• 6-groove serpentine pulley
• Clock position: 4:30
• Remanufactured by MPA Electrical
• Part number: 8221604

Product Details

This MPA Electrical remanufactured alternator is specified for vehicles that use a 145 amp Delco-style charging unit. The 8221604 alternator is listed for 1997-1999 Chevrolet P30 models with a 145 amp alternator, 1996-1999 Chevrolet P30 models with the optional 145 amp alternator, and 1996-1999 GMC P3500 models with a 145 amp alternator. If you are searching for a remanufactured alternator for Chevrolet P30 or GMC P3500 charging system repair, this unit matches the listed electrical and pulley specifications.

This part cross-references 10463845 and 19152124 for the same application.

Common Problems This Part Can Address

• Low battery charge or repeated battery drain
• Charging warning light on the dash
• Weak electrical output under load
• Alternator noise from worn internal components
• Charging-system failure on a 145 amp setup

Installation Notes and Tips

• Confirm the vehicle uses the listed 145 amp alternator configuration before ordering.
• Verify pulley groove count, rotation, and clock position against the removed unit.
• Inspect the belt, wiring connections, and battery condition during replacement.
• Check charging voltage after installation to confirm proper system operation.

Quality Assurance

MPA Electrical remanufactured components are rebuilt to service charging-system applications with the listed Delco-style specifications. Part number 8221604 is intended for direct replacement in the confirmed Chevrolet P30 and GMC P3500 fitments shown above.