BBB Industries 8203-5 Alternator

Reman Alternator for GM Trucks and Vans

BBB Industries 8203-5 is a remanufactured 12-volt alternator built for select Chevrolet, GMC, and Hummer applications that use a Delco/Delphi CS144 charging system. With a 124-amp rating, internal voltage regulation, and an external fan, it is a direct-fit electrical replacement for many full-size trucks, SUVs, and vans.

The BBB Industries REMAN ALTERNATOR line focuses on OE-style replacement coverage for charging-system service. Part number 8203-5 follows the CS144 design with a serpentine belt pulley, clockwise rotation, and a 5 o'clock plug clock position for applications that match the original unit.

• 124-amp output for factory-style charging performance
• 12V alternator with internal voltage regulator
• Delco/Delphi CS144 series construction
• External fan included for air-cooled operation
• 6-groove conventional pulley included
• Serpentine belt drive with clockwise rotation
• Negative polarity configuration

Detailed Product Overview

This reman alternator is built for vehicles that require a Delco/Delphi CS144-style charging unit and a 124-amp output. It is a strong match for owners searching for a reman alternator for Chevrolet C1500, Chevrolet K2500, GMC Yukon, or Hummer H1 charging-system repair, as well as other listed Chevrolet and GMC truck and van applications. The BBB Industries 8203-5 alternator uses an external fan, air cooling, and an internal regulator to match the original electrical layout on covered vehicles.

This part cross-references OE-style numbers such as 10463636 and 10480255 for the same application.

Common Problems This Part Can Address

• Low battery charging or repeated battery drain
• Dim headlights or unstable electrical output
• Warning lights related to the charging system
• Noise or wear from a failing alternator assembly
• Charging issues on high-demand GM truck and van electrical systems

Installation Notes and Fitment Tips

Verify the original alternator matches the CS144 series, 124-amp rating, 6-groove serpentine pulley, and 5 o'clock plug clock position before installation. Confirm the vehicle uses the listed external-fan configuration and compare the OE part number against the interchange references when servicing Chevrolet Express, GMC Savana, Chevrolet Tahoe, GMC Yukon, or Hummer H1 applications.

• Fits 2006 Hummer H1, N/A
• Fits 2002-2004 Hummer H1, N/A
• Fits 1996-2000 Chevrolet C2500, N/A
• Fits 1996-2000 Chevrolet C3500, N/A
• Fits 1998-2000 Chevrolet Express 1500, N/A
• Fits 1998-2000 Chevrolet Express 2500, N/A
• Fits 1996-2000 Chevrolet Express 2500, N/A
• Fits 1997-2000 Chevrolet Express 3500, N/A
• Fits 1998-2000 Chevrolet Express 3500, N/A
• Fits 1996-2000 Chevrolet K2500, N/A
• Fits 1996-2000 Chevrolet K3500, N/A
• Fits 1996-2000 Chevrolet Tahoe, N/A
• Fits 1996-2000 GMC C2500, N/A
• Fits 1996-2000 GMC C3500, N/A
• Fits 1996-2000 GMC K2500, N/A
• Fits 1996-2000 GMC K3500, N/A
• Fits 1998-2000 GMC Savana 1500, N/A
• Fits 1996-2000 GMC Savana 2500, N/A
• Fits 1998-2000 GMC Savana 2500, N/A
• Fits 1998-2000 GMC Savana 3500, N/A
• Fits 1996-2000 GMC Savana 3500, N/A
• Fits 1996-2000 GMC Yukon, N/A
• Fits 1996-1999 Chevrolet C1500, N/A
• Fits 1996-1999 Chevrolet C1500 Suburban, N/A
• Fits 1996-1999 Chevrolet C2500 Suburban, N/A
• Fits 1996-1999 Chevrolet K1500, N/A
• Fits 1996-1999 Chevrolet K1500 Suburban, N/A
• Fits 1996-1999 Chevrolet K2500 Suburban, N/A
• Fits 1996-1999 GMC C1500, N/A
• Fits 1996-1999 GMC C1500 Suburban, N/A
• Fits 1996-1999 GMC C2500 Suburban, N/A
• Fits 1996-1999 GMC K1500, N/A
• Fits 1996-1999 GMC K1500 Suburban, N/A
• Fits 1996-1999 GMC K2500 Suburban, N/A
• Fits 1996-1997 Chevrolet C1500, N/A
• Fits 1996-1997 Chevrolet C1500 Suburban, N/A
• Fits 1996-1997 Chevrolet C2500, N/A
• Fits 1996-1997 Chevrolet C2500 Suburban, N/A
• Fits 1996-1997 Chevrolet C3500, N/A
• Fits 1996-1997 Chevrolet Express 1500, N/A
• Fits 1996-1997 Chevrolet K1500, N/A
• Fits 1996-1997 Chevrolet K1500 Suburban, N/A
• Fits 1996-1997 Chevrolet K2500, N/A
• Fits 1996-1997 Chevrolet K2500 Suburban, N/A
• Fits 1996-1997 Chevrolet K3500, N/A
• Fits 1996-1997 Chevrolet Tahoe, N/A
• Fits 1996-1997 GMC C1500, N/A
• Fits 1996-1997 GMC C1500 Suburban, N/A
• Fits 1996-1997 GMC C2500, N/A
• Fits 1996-1997 GMC C2500 Suburban, N/A
• Fits 1996-1997 GMC C3500, N/A
• Fits 1996-1997 GMC K1500, N/A
• Fits 1996-1997 GMC K1500 Suburban, N/A
• Fits 1996-1997 GMC K2500, N/A
• Fits 1996-1997 GMC K2500 Suburban, N/A
• Fits 1996-1997 GMC K3500, N/A
• Fits 1996-1997 GMC Savana 1500, N/A
• Fits 1996-1997 GMC Yukon, N/A
• Fits 1996 Chevrolet Express 1500, N/A
• Fits 1996 Chevrolet Express 2500, N/A
• Fits 1996 Chevrolet Express 3500, N/A
• Fits 1996 GMC Savana 2500, N/A
• Fits 1996 GMC Savana 3500, N/A

Quality Assurance

BBB Industries remanufactured electrical components are built to meet the requirements of the original charging-system application. Part number 8203-5 is specified for the listed Chevrolet, GMC, and Hummer fitments with the correct CS144 configuration.