Harddrive Regulator - Black Softail `2001-2006 OEM 74540-01 — Harley-Davidson Softail Heritage Classic, Softail Fat Boy, Softail (2001-2006)

Harddrive regulator for Harley-Davidson Softail models 2001-2006, engineered to meet or exceed OEM specifications. Built with high-power SCR technology and sealed encapsulation to run cooler and handle heat more effectively than stock units.

Features

• Meets or exceeds OEM specifications
• High-power SCR (Silicon Controlled Rectifier) technology
• Sealed, high-temperature encapsulation
• Surface-mount circuit board for efficient heat dissipation
• OEM-grade wiring harness

Specifications

• Brand: Harddrive
• Manufacturer Part #: H1001
• UPC: 191361169908
• Length: 5.5 in
• Width: 5.3 in
• Height: 3.3 in
• Weight: 1.565 lbs
• Country of Origin: China (Mainland)

Fitment

Fits Harley-Davidson Softail models 2001-2006.

Frequently Asked Questions

Will this fit my Softail if it's not in the 2001-2006 range?

This regulator is specific to 2001-2006 Softails. Earlier or newer Softails use different OEM part numbers — verify your model year before ordering.

What's the advantage over the stock regulator?

Harddrive's SCR technology and sealed design run cooler and more efficiently than original regulators, with better heat dissipation under load.

Do I need a mechanic to install this?

Regulator replacement is straightforward for riders with basic electrical knowledge. The OEM-grade wiring harness simplifies the swap.

Is this a direct OEM replacement?

Yes — it meets or exceeds OEM specifications and uses the factory wiring connector, making it a plug-and-play swap.