Harddrive Rear Brake Light Switch - V-Twin OEM Replacement
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.
Restore reliable brake light function on your V-twin with the Harddrive Rear Brake Light Switch. This direct OEM replacement is designed to seamlessly integrate with your hydraulic rear brake line, ensuring your brake light activates precisely when you apply the brakes. It's a critical safety component for any Harley-Davidson or Indian Motorcycle.
Why riders pick this
- Direct OEM replacement for #72023-51E
- Ensures reliable brake light activation
- Mounts directly to hydraulic brake line
- Includes new spade connectors
- Crucial safety component
A functioning brake light is non-negotiable for safety, and this Harddrive rear brake light switch ensures yours works every time. Designed as a direct replacement for OEM #72023-51E, it eliminates guesswork during installation. It mounts directly to your rear hydraulic brake line, providing accurate activation of your brake light, giving riders behind you clear warning when you're slowing down.
Reliable Safety and Easy Installation
- Direct replacement for OEM #72023-51E
- Ensures proper activation of your rear brake light
- Mounts to the rear hydraulic brake line
- Includes new spade connectors for a clean electrical connection
Essential Electrical Component
Don't overlook the importance of a properly functioning brake light switch. This Harddrive replacement offers a straightforward solution to common electrical issues that can lead to an unreliable brake light. It's a simple, yet crucial, component for maintaining both the safety and legality of your V-twin. Always confirm the OEM part number on your existing switch to ensure perfect compatibility.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 370457
- UPC: 191361374449
- Length: 1.5 in
- Width: 2 in
- Height: 0.8 in
- Weight: 0.2 lbs
- Country of Origin: China (Taiwan)
Common questions
Will this brake light switch fit my specific Harley-Davidson or Indian Motorcycle?
This switch is a direct replacement for OEM #72023-51E. To ensure compatibility, you should verify that this is the OEM part number currently on your motorcycle's rear brake light switch.
What is included with this Harddrive brake light switch?
The package includes the rear hydraulic brake light switch itself, along with new spade connectors, ready for installation.
Do I need to bleed my brakes after installing this switch?
Yes, because this switch connects to your hydraulic brake line, you will need to bleed your rear brake system after installation to remove any air that entered the line and ensure proper brake function.
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 | Switches |
| SKU | 820-51899 |
| WEIGHT | 0.2 lb |
