BBB Industries 42074 Alternator

Reman Alternator for GM HD and Van Applications

BBB Industries REMAN ALTERNATOR 42074 is a 12-volt, 150-amp replacement alternator built for select Chevrolet and GMC applications that use a Nippondenso OE design. It features an internal voltage regulator, clockwise rotation, a serpentine belt pulley, and air cooling for standard charging-system service.

Use this remanufactured alternator when you need a direct-fit charging component for Chevrolet Express 2500, Chevrolet Silverado 2500 HD, and GMC Sierra 3500 HD applications that call for a 150 amp Nippondenso-style unit. Part number 42074 is also a fitment match for several Chevrolet and GMC van and heavy-duty truck applications listed below.

Key Features

• 150 amp amperage rating for standard charging output
• 12-volt alternator with internal voltage regulator
• OE manufacturer: Nippondenso
• Clockwise rotation with conventional pulley design
• 6-groove serpentine pulley included
• Air-cooled unit with internal fan
• Negative polarity configuration
• Plug clock position: 1

Detailed Product Overview

BBB Industries 42074 is a reman alternator engineered around the OE Nippondenso layout used in a range of GM commercial vans and heavy-duty pickups. The unit uses a conventional pulley with a 2-5/16 inch outside diameter, 59 mm outside diameter, and 6 pulley grooves to match serpentine belt systems. With internal regulation and clockwise rotation, it is built for vehicles that require a 150 amp charging solution in a standard alternator configuration.

This part cross-references ACDelco 84143542 and Denso 104211-8350 for the same application. It is a practical replacement for Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications where the OE-style charging setup matches the listed specifications.

Vehicle Fitment

• Fits 2022 Chevrolet Express 2500, N/A — 150 Amps; REMAN ALTERNATOR
• Fits 2017-2021 Chevrolet Express 2500, N/A — Suitable for 150 Amp alternator applications; REMAN ALTERNATOR
• Fits 2017-2020 Chevrolet Express 2500, N/A — NDenso Unit; Std; 150 Amps; REMAN ALTERNATOR
• Fits 2017-2020 Chevrolet Express 3500, N/A — Suitable for 150 Amp alternator applications; REMAN ALTERNATOR
• Fits 2017-2020 Chevrolet Express 3500, N/A — NDenso Unit; Std; 150 Amps; REMAN ALTERNATOR
• Fits 2017-2020 GMC Savana 2500, N/A — NDenso Unit; Std; 150 Amps; REMAN ALTERNATOR
• Fits 2017-2020 GMC Savana 3500, N/A — NDenso Unit; Std; 150 Amps; REMAN ALTERNATOR
• Fits 2015-2019 Chevrolet Silverado 2500 HD, N/A — Standard alternator with 150 Amps.; REMAN ALTERNATOR
• Fits 2015-2019 Chevrolet Silverado 3500 HD, N/A — Standard alternator with 150 Amps.; REMAN ALTERNATOR
• Fits 2016-2019 Chevrolet Suburban 3500 HD, N/A — Standard alternator with 150 Amps.; REMAN ALTERNATOR
• Fits 2015-2019 GMC Sierra 2500 HD, N/A — Standard alternator with 150 Amps.; REMAN ALTERNATOR
• Fits 2015-2019 GMC Sierra 3500 HD, N/A — Standard alternator with 150 Amps.; REMAN ALTERNATOR
• Fits 2018 GMC Savana 2500, N/A — Suitable for 150 Amp alternator applications; REMAN ALTERNATOR
• Fits 2018 GMC Savana 3500, N/A — Suitable for 150 Amp alternator applications; REMAN ALTERNATOR

What This Alternator Helps Address

• Battery warning light caused by low charging output
• Dim lights or electrical instability at idle
• Charging-system failure on GM Express, Savana, Silverado, and Sierra applications
• Alternator noise or bearing-related charging concerns
• Replacement needs for a Nippondenso-style 150 amp unit

Installation Notes and Tips

Confirm the vehicle uses a 150 amp alternator application with a Nippondenso OE design before installation. Verify pulley groove count, plug clock position, rotation direction, and voltage regulator type against the original unit to ensure proper electrical and belt-system match. Check belt condition and charging-system connections during replacement to help avoid repeat failures.

Quality Assurance

BBB Industries remanufactured alternators are rebuilt to restore charging-system function for OE-style replacement use. Part number 42074 is specified for select GM applications and follows the listed electrical and mounting characteristics for accurate fitment.