Powermaster 517943-17.5 High-Output 245 Amp GM Denso Alternator Black 6-Groove Serpentine

The Powermaster 517943-17.5 is a high-output 245-amp alternator built on the GM Denso case style, finished in satin black powdercoat. Designed as a direct bolt-on upgrade over the factory unit, this alternator delivers significantly more charging capacity to support demanding electrical loads from aftermarket audio, lighting, cooling fans, and other power-hungry accessories.

Key Features:

• 245-amp output — massively outperforms stock OEM alternators rated at 150A–175A
• GM Denso case style — direct-fit replacement using OE-style connector hookup
• 6-groove serpentine pulley — 3-inch under-drive diameter for optimized belt engagement and reduced parasitic drag
• Black powdercoat finish — clean, durable appearance under the hood
• Internal voltage regulator — plug-and-play installation with no external regulator required
• Hand-wound, custom-designed stator — engineered for high output with excellent idle-speed charging performance
• Heavy-duty rectifiers and regulators — built for long-term reliability under high electrical demand
• Gold-plated battery post — ensures superior electrical connection and corrosion resistance
• Made in the USA — manufactured by Powermaster, a trusted name in performance charging systems

Powermaster's high-amp alternators are engineered for performance street and track applications where factory charging systems fall short. This unit is sold individually and does not include a charge wire.