MPA Electrical 13987 Alternator

Remanufactured Alternator for Ram HD Trucks

MPA Electrical Part Number 13987 is a remanufactured 12-volt alternator built for select Dodge Ram 2500 and Ram 3500 diesel applications. It is specified at 136 amps and uses an internal fan, an external regulator, and an 8-groove serpentine pulley for the listed charging system setup.

This remanufactured MPA Electrical alternator is a direct-fit charging component for 2003-2005 Dodge Ram 2500 and 2003-2005 Dodge Ram 3500 models. The Bosch-manufactured unit is configured for clockwise rotation and a 2:00 clock position, helping match the original electrical and mounting requirements.

• 136 amp output for the vehicle charging system
• 12-volt alternator configuration
• Internal fan design
• External regulator setup
• 8-groove serpentine pulley
• Clockwise rotation with 2:00 clock position
• Remanufactured by MPA Electrical

Fitment Details

Compatible with 2003-2005 Dodge Ram 2500 and 2003-2005 Dodge Ram 3500 applications. This part number 13987 is also cross-referenced to BBB Industries 13987 for the same application.

What This Alternator Helps Address

• Battery warning lights caused by low charging output
• Dim lights or electrical load issues at idle
• Slow battery recovery after starting
• Charging system faults related to alternator wear
• Voltage instability in Ram 2500 and Ram 3500 trucks

Installation Notes and Tips

Verify pulley groove count, regulator style, clock position, and rotation before installation. Confirm the existing charging system matches the listed 136 amp, 12-volt Bosch configuration for your Dodge Ram 2500 or Ram 3500. Inspect the belt, battery condition, and charging connections during replacement to help avoid repeat charging concerns.

Quality Assurance

MPA Electrical remanufactured components are rebuilt to restore proper electrical function for the specified application. Part Number 13987 is listed with confirmed fitment for 2003-2005 Dodge Ram 2500 and 2003-2005 Dodge Ram 3500 models.