MPA Electrical 11309 Alternator

Remanufactured Alternator for Mercedes-Benz Diesel Applications

This MPA Electrical remanufactured alternator is built for 12-volt charging systems that need a direct-fit replacement with the correct Valeo-style configuration. With 180 amps of output, an internal regulator, and an 8-groove serpentine clutch pulley, it is suited for Mercedes-Benz ML320, R320, and GL320 applications that use a Valeo alternator.

Key Features

• 180 amp output for charging-system performance
• 12 volts with internal voltage regulator
• Internal fan design
• 8-groove serpentine clutch pulley
• Clock position: 3:00
• Clockwise rotation
• Remanufactured by MPA Electrical
• Manufacturer reference: Valeo

Product Details

MPA Electrical Part Number 11309 is a remanufactured alternator engineered around the Valeo application used in select Mercedes-Benz diesel models. The 180 amp rating supports the vehicle’s electrical demand, while the internal regulator and internal fan help maintain stable charging operation in the original system layout. This alternator cross-references Valeo 439583 for the same application. Part number 11309 is also a useful reference when verifying the correct charging component for Mercedes-Benz ML320, R320, and GL320 vehicles equipped with a Valeo alternator.

Vehicle Fitment

• Fits 2007-2008 Mercedes-Benz ML320, N/A, w/ Valeo alt.; Remanufactured
• Fits 2008 Mercedes-Benz R320, N/A, To 02/19/2008, w/ Valeo Alternator; Remanufactured
• Fits 2007 Mercedes-Benz GL320, N/A, w/ Valeo alt.; Remanufactured
• Fits 2007 Mercedes-Benz R320, N/A, w/ Valeo alt.; Remanufactured

Common Charging System Issues

• Low battery charge or repeated battery drain
• Battery warning light or charging-system warning on the dash
• Dim lights or unstable electrical output
• Alternator noise or pulley-related charging concerns
• Failure to maintain proper voltage under load

Installation Notes and Tips

Confirm the vehicle uses a Valeo alternator before ordering. Match the pulley style, clock position, rotation, and amperage rating to the original unit for proper installation. Verify belt alignment and electrical connections during replacement, and inspect the battery and charging circuit after installation to confirm system voltage is within specification.

Quality Assurance

This remanufactured alternator is built by MPA Electrical for the specified Mercedes-Benz applications and follows the listed Valeo-based configuration. Use the fitment details and part number 11309 to confirm application accuracy before installation.