Drag Specialties 2112-1040 Black Solid-State Voltage Regulator for Harley-Davidson FXD Dyna 2004-2005

The Drag Specialties 2112-1040 is a black solid-state voltage regulator designed as a direct-fit replacement for Harley-Davidson FXD Dyna models from 2004–2005. It replaces OEM Harley-Davidson part number 74631-04 and installs using the factory wiring connectors with no splicing or modification required.

Key Features:

• Solid-state design delivers consistently regulated 12V charging output across all electrical loads
• Direct OEM replacement — accepts factory connectors for straightforward, bolt-on installation
• Black finish provides a clean, low-profile appearance suited to blacked-out builds
• Aluminum construction with heat-dissipating fins for reliable thermal management
• Maintains proper charging voltage (approximately 13.5–14.5 VDC) to protect the battery and electrical system
• Sold individually

This regulator is an excellent upgrade or replacement for riders experiencing charging issues, battery drain, or overcharging on 2004–2005 FXD Dyna platforms. Cross-reference: OEM 74631-04, alternate part number 21121040.