Powermaster 37861 GM CS130 Chrome 140 Amp Alternator

The Powermaster 37861 is a high-performance GM CS130-style alternator designed to deliver reliable 140-amp output for hot rods, muscle cars, trucks, and high-demand electrical systems. This chrome-plated alternator features a compact CS130 case design with left offset mounting, making it an excellent replacement for 10SI and 12SI alternators while providing significantly more charging capacity.

Key Features:

• 140-amp maximum output with 95-amp idle performance
• Chrome-plated finish for show-quality appearance
• GM CS130 compact case design with left offset mounting
• Internal voltage regulator with improved thermal management
• 1-wire or 3-wire connection capability for flexible installation
• 6-groove serpentine pulley included
• Rear battery post configuration with 4.63-inch spacing
• 5.31-inch center-to-center mounting bolt spacing
• Internal and external cooling fans for superior heat dissipation

This alternator is compatible with a wide range of GM applications including Chevrolet, GMC, and Pontiac vehicles. The CS130 design offers improved efficiency and durability compared to older alternator styles, while the compact size ensures clearance in tight engine compartments. Perfect for vehicles with upgraded audio systems, electric fans, or other high-draw accessories that demand consistent charging performance.