Diag4 Bike Serial Diagnostic System Adaptor Cable - Harley 2021+ V-Twin
About Diag4 Bike
Diag4 Bike parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every Diag4 Bike item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.
The Diag4 Bike serial diagnostic system adaptor cable provides the crucial link between your 2021 and newer Harley-Davidson or Indian Motorcycle and a Windows PC. This allows you to perform in-depth engine diagnostics, monitor live parameters, and troubleshoot issues directly from your laptop. It's an essential tool for any V-twin owner serious about understanding and maintaining their bike's performance.
Why riders pick this
- Connects V-twin motorcycles to Windows PC for diagnostics
- Reads and monitors engine parameters and fault codes
- Compatible with Harley-Davidson and Indian Motorcycle models
- Supports Windows XP through Windows 10 operating systems
- Simplifies troubleshooting and performance analysis
When your check engine light comes on or you're chasing down a performance issue, having the right diagnostic tools is key. The Diag4 Bike adaptor cable bridges the gap, allowing you to tap into your bike's ECU. This system provides a comprehensive view of your V-twin's operational data, helping you identify fault codes and system parameters that are critical for accurate diagnosis and tuning adjustments.
Unlock Deeper Diagnostics
- Connects your V-twin to a Windows PC for engine diagnostics
- Monitors live engine parameters and fault codes
- Certified for Windows XP through Windows 10 compatibility
- Plugs directly into your Harley-Davidson or Indian Motorcycle
Essential for Serious Riders
Whether you're a seasoned mechanic or a DIY rider, this diagnostic cable empowers you with professional-grade insights into your motorcycle's health. It's particularly useful for post-tune verification, pre-ride checks, or resolving unexpected performance quirks. Ensure you confirm software compatibility with your specific Windows operating system before ordering to get the most out of your diagnostic setup.
Specifications
- Brand: Diag4 Bike
- Manufacturer Part #: AT 531 4049
- Length: 7 in
- Weight: 1.2231 lbs
- Country of Origin: Czech Republic
Common questions
What does this cable do?
This cable connects your 2021+ Harley-Davidson or Indian Motorcycle to a Windows PC, allowing you to use Diag4 Bike software for engine diagnostics, fault code reading, and parameter monitoring.
Is this cable compatible with my Harley-Davidson model?
This adaptor cable is designed for 2021 and newer Harley-Davidson models, as well as Indian Motorcycle models. Please use our Shop by Bike tool to confirm exact fitment for your specific year and model.
Do I need special software to use this cable?
Yes, this cable requires the Diag4 Bike diagnostic software, which runs on Windows XP through Windows 10. The software is sold separately and is necessary to interpret the data from your motorcycle.
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 | Diag4 Bike |
| TYPE | Tools |
| SKU | 867-02014 |
| WEIGHT | 1.22 lb |
