BBB Industries 7939-3 Alternator

Reliable Alternator Replacement for Buick, Chevrolet, Oldsmobile, and Pontiac

The BBB Industries REMAN ALTERNATOR 7939-3 is designed to restore proper charging system function in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered to meet original equipment specifications, this alternator ensures consistent 12-volt power delivery with a 105-amp rating.

Key Features of the BBB Industries REMAN ALTERNATOR 7939-3

• Amperage Rating: 105 amps for reliable electrical output
• Cooling Method: Air-cooled with an external fan included
• Fan Type: External fan enhances heat dissipation
• Pulley: Conventional pulley with 6 grooves and 2-1/4 inch diameter
• Voltage Regulator: Internal voltage regulator for stable voltage control
• Rotation Direction: Clockwise rotation matching original equipment
• Polarity: Negative polarity configuration
• Pulley Belt Type: Designed for serpentine belt systems
• OE Manufacturer: Remanufactured to Delco/Delphi standards

Detailed Description of the REMAN ALTERNATOR 7939-3

This alternator from BBB Industries is part of the REMAN ALTERNATOR product line, which focuses on remanufactured components that meet or exceed original equipment manufacturer (OEM) specifications. The 7939-3 alternator features a 105-amp output suitable for vehicles requiring moderate electrical loads. It includes an external fan to maintain optimal operating temperatures and prevent overheating during extended use. The conventional pulley with six grooves and a 2-1/4 inch diameter is compatible with serpentine belt systems commonly found in Buick Cutlass Supreme, Chevrolet Lumina, Oldsmobile Regal, and Pontiac Grand Prix models. The internal voltage regulator ensures consistent voltage output, protecting your vehicle’s electrical system from fluctuations.

Compatible Vehicles and Common Applications

This alternator is compatible with the following makes and models:

• Buick Cutlass Supreme
• Chevrolet Lumina
• Oldsmobile Regal
• Pontiac Grand Prix

It is designed to address issues such as:

• Battery not charging properly
• Dimming or flickering headlights
• Electrical system warning lights on the dashboard
• Unusual noises from the alternator area
• Vehicle stalling or difficulty starting due to electrical failure

Installation Notes and Tips

When installing the BBB Industries REMAN ALTERNATOR 7939-3, ensure the serpentine belt is properly aligned with the 6-groove conventional pulley. Verify the clockwise rotation direction matches the original alternator. Confirm the negative polarity connection and plug clock position at 3 o’clock for correct wiring. It is recommended to inspect the battery and charging system components during installation to ensure optimal performance.

Quality Assurance and Warranty Information

BBB Industries remanufactured alternators undergo rigorous testing to meet OEM standards, including electrical output and durability assessments. The REMAN ALTERNATOR line is engineered to provide reliable performance consistent with factory specifications. Warranty coverage details should be confirmed at the point of purchase, as BBB Industries typically offers limited warranties on remanufactured electrical components.