MPA Electrical 13993 Alternator

Remanufactured Alternator for Pontiac and Oldsmobile

MPA Electrical Part Number 13993 is a remanufactured 12-volt alternator built for vehicles that use a 105 amp charging system. It is configured with an internal fan, internal regulator, clockwise rotation, a 6-groove serpentine pulley, and a clock position of 9:00.

Compatible with select Pontiac Montana and Oldsmobile Silhouette applications, this Valeo-based alternator is intended for direct replacement use where the original unit matches the listed electrical and pulley specifications. The MPA Electrical 13993 alternator supports OE-style charging performance for the specified fitments.

Key Features

• Remanufactured alternator for 12-volt charging systems
• 105 amp output rating
• Internal fan and internal voltage regulator
• 6-groove serpentine pulley
• Clockwise rotation with 9:00 clock position
• Manufactured from Valeo-based core specifications

Detailed Description

MPA Electrical 13993 is a remanufactured alternator for drivers searching for a replacement charging component for 2002-2005 Pontiac Montana and 2002-2004 Oldsmobile Silhouette models equipped with a 105 amp alternator. This unit is built around the listed electrical and pulley configuration, including 12 volts, internal regulation, internal cooling fan, and clockwise rotation. If you are replacing a worn charging unit on a Pontiac Montana or Oldsmobile Silhouette, matching the amperage and pulley layout is essential for proper fitment.

This part cross-references BBB Industries 13993 for the same application. The part number 13993 is also associated with interchange references including SG10S029 and SG10S035.

Vehicle Fitment

• Fits 2002-2005 Pontiac Montana, N/A. Notes: Fits vehicles equipped with a 105 amp alternator; Remanufactured.
• Fits 2002-2004 Oldsmobile Silhouette, N/A. Notes: Fits vehicles equipped with a 105 amp alternator; Remanufactured.

Common Replacement Reasons

• Battery warning light or charging system warning
• Low system voltage during driving or idle
• Dim lights or electrical accessories operating inconsistently
• Alternator bearing noise or charging output loss
• Failure to maintain proper battery charge

Installation Notes and Tips

Verify the existing alternator matches the 105 amp rating, 6-groove serpentine pulley, clockwise rotation, and 9:00 clock position before installation. Confirm connector style and mounting alignment against the removed unit to avoid fitment issues. After installation, check charging voltage at the battery and inspect belt tracking and tension.

Quality Assurance

MPA Electrical remanufactured components are rebuilt to meet the listed application requirements for the specified Pontiac Montana and Oldsmobile Silhouette fitments. The Valeo-based design and internal regulator configuration support consistent charging-system replacement where the original specifications match.