MPA Electrical 13970 Alternator

Remanufactured Valeo 120 Amp Alternator

MPA Electrical Part Number 13970 is a remanufactured 12-volt alternator built for BMW charging-system applications that use a Valeo 120 amp unit. It features an internal regulator, internal fan, clockwise rotation, a 6-groove serpentine pulley, and a 3:00 clock position for proper fitment.

Key Features

• 120 amps output for BMW charging-system replacement
• 12-volt alternator with internal regulator
• Internal fan and clockwise rotation
• 6-groove serpentine pulley
• 3:00 clock position
• Remanufactured by MPA Electrical
• Manufacturer reference: Valeo

Product Details

This MPA Electrical remanufactured alternator is built for vehicles originally equipped with a Valeo 120 amp charging unit. Part number 13970 is used in BMW applications including 325Ci, 330Ci, X5, 320i, 330i, 330xi, 325i, 325xi, 525i, and 530i model years covered by the fitment data. This part cross-references BBB Industries 13970 for the same application.

Compatible BMW fitment includes 2001-2006 BMW 325Ci and 330Ci with air duct, Valeo 120 amp alternator, and rectangular connector; 2001-2006 BMW X5 with 120 amp Valeo alternator; 2001-2005 BMW 320i, 330i, and 330xi with Valeo 120 amp alternator; 2001-2004 BMW 325i with Valeo 120 amp alternator and rectangular connector; 2001-2003 BMW 325xi, 525i, and 530i with Valeo 120 amp alternator.

Common Replacement Reasons

• Battery warning light or charging-system fault
• Low charging voltage at the battery
• Dim lights or electrical instability
• Alternator bearing noise or pulley wear
• Failure of the internal voltage regulator

Installation Notes

Verify the original alternator matches the 120 amp Valeo configuration, 6-groove serpentine pulley, clockwise rotation, and 3:00 clock position before installation. Confirm connector style and any vehicle-specific air duct or rectangular connector requirements listed in the fitment notes. Check belt condition, battery health, and charging voltage after installation to confirm proper system operation.

Quality Assurance

MPA Electrical remanufactured components are rebuilt to restore charging-system function for direct replacement use in the listed BMW applications. Part number 13970 is specified for the confirmed fitment shown above and references Valeo 439398 for interchange verification.