FWGC 13987R Alternator

Alternator for Ram 2500 and Ram 3500

This alternator is built for charging-system replacement on select Dodge Ram trucks with a Bosch unit. Part number 13987R is a 12-volt, 136-amp alternator with an internal fan and external regulator setup for the specified applications.

Key Features

• 136-amp output for vehicles with higher electrical demand
• 12-volt alternator with clockwise rotation
• Internal fan design for charging-system cooling
• Serpentine belt pulley with 8 grooves included
• Decoupled or clutch pulley not used

Detailed Description

Part number 13987R is a Bosch-family alternator engineered for 2003-2005 Dodge Ram 2500 and Dodge Ram 3500 applications, plus the 2005 Dodge Ram 4000. It is specified as a 136-amp unit with an external regulator, clockwise rotation, and a serpentine pulley configuration. Power Select alternators are built with proprietary components and manufacturing processes to support long service life and consistent electrical performance.

This alternator cross-references BBB Industries 13987 for the same application.

What It Helps Solve

• Low charging output from a worn alternator
• Battery drain caused by insufficient system amperage
• Charging instability in trucks with added electrical load
• Noise or wear related to a failing pulley or internal alternator components

Installation Notes and Tips

Verify the existing alternator matches the Bosch-unit application, 136-amp rating, external regulator configuration, clockwise rotation, and serpentine pulley layout before installation. Confirm connector and belt alignment against the original unit. Part number 13987R should be matched to the vehicle’s charging-system specifications for proper fitment.

Quality Assurance

Power Select alternators are manufactured with proprietary components and processes to support maximum life and performance.