Powermaster 485503-16.8 High-Output Denso-Style Alternator 245 Amp Natural Finish 6-Groove Pulley

The Powermaster 485503-16.8 is a high-output, Denso-style alternator built for GM HPR applications including Escalade, C-Series, and K-Series trucks. Featuring a 245-amp peak output rating and a preset 16.8-volt regulation, this unit is engineered to meet the elevated electrical demands of high-performance and heavily accessorized vehicles.

This alternator utilizes a 3-inch, 6-groove under-drive serpentine pulley for optimal belt engagement and reduced rotational drag. The natural finish gives it a factory-style appearance while delivering well beyond stock amperage levels. It uses a 2-pin OE-style hookup compatible with the factory wiring harness, making installation straightforward using existing brackets and belts.

Key Features:

• 245-amp peak output for high electrical demand applications
• 16.8-volt preset voltage regulation
• Denso case-style construction
• 3-inch, 6-groove under-drive serpentine pulley
• 2-pin OE-style connector for factory-compatible hookup
• Natural (unpainted) finish
• Internal voltage regulator
• Dyno-tested with proof of performance tag included
• Hand-wound, custom-designed stator
• Gold-plated battery post for superior electrical connection
• Heavy-duty rectifiers and regulators

Powermaster alternators are dyno-tested before leaving the factory and include a proof of performance tag. This unit is ideal for trucks and SUVs running high-demand audio systems, lighting upgrades, or other aftermarket electrical accessories that require sustained, reliable power delivery.