Harddrive Regulator Black - Harley Softail 2008-2010
About Harddrive
Harddrive is the house performance and replacement line built for American V-twins, covering everything from engine hardware and electrical to controls, lighting and chassis parts. The range is aimed squarely at Harley-Davidson and Indian riders who want a direct-fit part without dealer pricing, and it spans decades of model years — from Evolution-era Softails to current Milwaukee-Eight baggers.
Replace your failing factory voltage regulator with a Harddrive unit, engineered to meet or exceed OEM specifications for your Harley-Davidson Softail. This black regulator features advanced high-power SCR technology and sealed encapsulation, designed for cooler and more reliable operation under demanding V-twin conditions.
Why riders pick this
- Meets or exceeds OEM specifications
- High-power SCR technology for cooler operation
- Sealed encapsulation resists environmental damage
- Surface-mount circuit board for better heat dissipation
- OEM-grade wiring harness with built-in protection
A critical component of your V-twin's electrical system, the voltage regulator ensures consistent power delivery to your battery and electronics. This Harddrive regulator is a direct replacement for 2008-2010 Harley Softail models, built to handle the heat and vibration that can prematurely wear out lesser components. Its robust construction helps maintain stable voltage, protecting your bike's sensitive electrical systems.
Enhanced Reliability and Thermal Management
- Engineered to meet or exceed original equipment specifications for peace of mind
- Utilizes high-power SCR (Silicon Controlled Rectifier) technology for efficient voltage control
- Features sealed encapsulation for superior environmental protection and durability
- Surface-mount circuit board design promotes improved heat dissipation
- Includes an OEM-grade wiring harness with integrated temperature and voltage protection
Maintain Peak Electrical Performance
Don't let a failing regulator leave you stranded or damage other expensive electrical components. This Harddrive black regulator provides a reliable, direct bolt-on solution for your Softail, ensuring your charging system operates at peak efficiency. It's an essential upgrade for any rider looking to improve the long-term health of their Harley's electrical system.
Specifications
- Brand: Harddrive
- Manufacturer Part #: H4008
- UPC: 191361169861
- Length: 5.2 in
- Width: 5.1 in
- Height: 3.1 in
- Weight: 1.37 lbs
- Country of Origin: China (Mainland)
Common questions
Is this regulator a direct replacement for my 2008-2010 Softail?
Yes, this Harddrive regulator is specifically engineered as a direct replacement for Harley-Davidson Softail models from 2008 to 2010. Please confirm your bike's year before ordering.
Will this regulator help my charging system run cooler?
Absolutely. This regulator incorporates high-power SCR technology and a surface-mount circuit board design, which are intended to reduce heat generation and improve thermal efficiency compared to many stock units.
Does this require any modifications for installation?
No, this Harddrive regulator is designed for a direct bolt-on installation, utilizing an OEM-grade wiring harness that connects seamlessly to your existing electrical system.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Harddrive |
| TYPE | Electrical |
| SKU | 820-60108 |
| WEIGHT | 1.37 lb |