BBB Industries 42020 Alternator

BBB Industries 42020 Reman Alternator

The BBB Industries REMAN ALTERNATOR 42020 is a 12-volt, 130-amp replacement alternator built for select Honda and Acura applications. It uses an internal voltage regulator, air cooling, and a decoupler pulley to match the OE-style charging system setup on covered vehicles.

Key Features

• 130-amp amperage rating for OE-style charging output
• 12V alternator with internal voltage regulator
• Air-cooled design with internal fan
• Decoupled pulley included; 6-groove serpentine belt type
• Clockwise rotation with negative polarity
• OE manufacturer reference: Nippondenso
• Plug clock position: 11

Product Details

BBB Industries 42020 is a remanufactured alternator from the REMAN ALTERNATOR line, built for vehicles that use a Nippondenso-style charging system. The unit includes the pulley and uses a decoupler pulley design, which is important for applications that rely on smooth belt operation and reduced accessory drive vibration. With a 130-amp rating, this alternator supports the electrical demands of modern vehicle systems while maintaining the original equipment configuration.

This part cross-references Honda/Acura OE numbers 31100-5G0-A02 and 31100-5J2-A51 for the same application. It is a direct-fit option for select Acura TLX, Acura RDX, Honda Accord, and Honda Crosstour applications, including 2013-2017 Honda Accord and 2015-2020 Acura TLX coverage.

Common Issues This Part Can Address

• Battery warning light caused by low charging output
• Dim headlights or unstable electrical performance
• Battery drain from a failing alternator
• Charging system noise related to pulley or bearing wear
• Intermittent accessory operation from inconsistent voltage supply

Installation Notes and Tips

Verify the plug clock position, pulley type, groove count, rotation direction, and voltage regulator style before installation. Confirm belt alignment and inspect the serpentine belt, tensioner, and electrical connectors during replacement. This alternator is listed for 2013-2020 Honda Accord, Honda Crosstour, Acura RDX, and Acura TLX applications, so match the vehicle year and charging system configuration before ordering.

Quality Assurance

BBB Industries remanufactures charging components to OE-style specifications for covered applications. This alternator is built around the original Nippondenso design reference and is intended to restore proper charging-system function on the listed Honda and Acura vehicles.