MPA Electrical 13771 Alternator

Remanufactured Bosch Alternator for GM Applications

MPA Electrical Part Number 13771 is a remanufactured 12-volt alternator built for select Chevrolet, Oldsmobile, and Pontiac vehicles with a Bosch charging system. It delivers 125 amps and uses a 6-groove serpentine pulley, making it a direct replacement for common GM charging system service needs.

This remanufactured product line focuses on restoring the alternator to service-ready condition for vehicles that need stable charging output and consistent electrical performance. Part number 13771 is a practical choice for drivers searching for a remanufactured Bosch alternator for Chevrolet Impala, Chevrolet Monte Carlo, or Pontiac Montana applications.

Key Features

• 125 amp output for 12-volt charging systems
• Internal fan and internal voltage regulator
• 6-groove serpentine pulley
• Clockwise rotation
• Clock position: 1:30
• Manufactured by Bosch
• Remanufactured by MPA Electrical

Detailed Product Overview

MPA Electrical 13771 is a remanufactured alternator for vehicles equipped with a Bosch alternator setup. The unit is specified at 125 amps, which supports the vehicle’s charging demands while maintaining proper battery replenishment and electrical system operation. Its internal regulator and internal fan simplify the design and match the configuration used in the listed applications.

Compatible With 2003-2005 Chevrolet Impala, N/A; 2003-2005 Chevrolet Monte Carlo, N/A; 2001-2002 Chevrolet Impala, N/A; 1999-2001 Oldsmobile Silhouette, N/A; 1999-2001 Pontiac Montana, N/A; 2000 Chevrolet Impala, N/A; and 1999 Pontiac Trans Sport, N/A. This part cross-references BBB Industries 13771 for the same application.

Common Problems This Alternator Can Address

• Battery warning light caused by low alternator output
• Dim lights or fluctuating electrical performance
• Battery not staying charged during normal driving
• Charging system faults related to a worn Bosch alternator
• Noise or failure from an aging internal-regulator alternator

Installation Notes and Tips

Verify pulley style, amperage rating, rotation, and connector fitment before installation. This alternator is specified with a 6-groove serpentine pulley, clockwise rotation, and a 1:30 clock position, so matching the original unit is important for proper alignment and electrical connection. Confirm the vehicle uses a Bosch alternator configuration before ordering.

Quality Assurance

As a remanufactured MPA Electrical alternator, Part Number 13771 is rebuilt for the listed GM applications and inspected to meet the required charging-system specifications for service use.