BBB Industries 13987 Alternator

Reman Alternator for Ram 2500 and Ram 3500

BBB Industries REMAN ALTERNATOR 13987 is a 12-volt, 136-amp replacement alternator built for 2003-2005 Dodge Ram 2500 and 2003-2005 Dodge Ram 3500 applications. It uses an external voltage regulator setup and a conventional pulley design to match the original charging system layout.

For buyers searching for a reman alternator for Dodge Ram 2500 136 amp or a reman alternator for Dodge Ram 3500 12V charging system service, part number 13987 provides a direct-fit option for the listed vehicles.

Key Features

• BBB Industries REMAN ALTERNATOR, part number 13987
• 136 amp amperage rating for OE-style charging output
• 12-volt electrical system with negative polarity
• External voltage regulator configuration
• Serpentine belt drive with 8-groove pulley
• Clockwise rotation with internal fan and air cooling
• OE manufacturer reference: Bosch
• Pulley included with conventional pulley type

Product Details

BBB Industries 13987 is a remanufactured alternator for Ram 2500 and Ram 3500 trucks that need a charging-system replacement matched to the original Bosch-based design. The unit features an 8-groove serpentine pulley, 2-5/16 in. outside pulley diameter, 11 o’clock plug clock position, and clockwise rotation. These specifications matter when replacing a worn alternator in a 2003-2005 Dodge Ram 2500 or 2003-2005 Dodge Ram 3500, especially when maintaining correct belt alignment and electrical connection layout.

This part cross-references Bosch 0-124-525-041 and 56028732AA for the same application.

What It Helps Fix

• Low battery charging caused by alternator wear
• Dim lights or fluctuating electrical output
• Battery warning light related to charging-system faults
• Voltage instability in truck electrical accessories
• Starting issues tied to insufficient alternator output

Installation Notes and Tips

Fits 2003-2005 Dodge Ram 2500, N/A. Fits 2003-2005 Dodge Ram 3500, N/A. Confirm the plug clock position, pulley groove count, rotation direction, and regulator style before installation to match the original charging system. Inspect the serpentine belt, electrical connectors, and charging circuit condition during replacement so the new alternator can operate correctly.

Quality Assurance

BBB Industries remanufactured electrical components are built to meet application-specific requirements for fit and function. Part number 13987 is remanufactured for the listed Dodge Ram truck applications and follows the OE manufacturer layout referenced for this unit.