Powermaster 517943-18.2 High-Output 245A GM Denso-Style Alternator Black Corvette

The Powermaster 517943-18.2 is a high-output 245-amp alternator designed for Corvette applications. Built in a GM Denso-style case and finished in a sleek black powder coat, this alternator delivers significantly more electrical output than a factory unit — making it ideal for vehicles running high-demand audio systems, electric cooling fans, lighting upgrades, or other aftermarket electrical accessories.

Powermaster engineers each alternator with a focus on maximum output at idle, so your electrical system stays charged and stable even in slow-speed or stop-and-go driving conditions. The unit features a 6-groove serpentine pulley and is designed for straightforward, direct-fit installation in compatible Corvette applications.

Key Features:

• 245-amp rated output for demanding electrical systems
• GM Denso-style case for direct-fit installation
• Black powder-coat finish for a clean, stealth appearance
• 6-groove serpentine pulley included
• High idle output to maintain charge under low-RPM conditions
• Built to exceed OEM output specifications
• Designed for high-performance and custom Corvette builds

Powermaster has been a trusted name in high-output charging systems for decades, offering American-made quality and engineering backed by a manufacturer warranty. The 517943-18.2 is the ideal upgrade for any Corvette owner needing a reliable, high-amperage charging solution.