Diag4 Bike Serial Diagnostic System Software W/USB Interface - Harley-Davidson
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 Software provides professional-grade diagnostics for Harley-Davidson motorcycles. This comprehensive software and USB interface allow workshops and serious DIYers to dive deep into their bike's electronic systems. Troubleshoot issues, monitor performance, and keep your V-twin running strong.
Why riders pick this
- Read and clear diagnostic trouble codes across multiple modules
- Monitor real-time sensor data for precise diagnostics
- Test critical actuators like injectors and fuel pump
- Supports EFI, security, ABS, and gauge systems
- USB interface for reliable connection to your motorcycle
This Diag4 Bike system is an essential tool for any Harley-Davidson owner or mechanic looking to maintain or troubleshoot their motorcycle's complex electronics. From clearing trouble codes to monitoring live sensor data, it gives you the power to understand exactly what's happening inside your bike's brain. It's designed to interface with various modules, ensuring you have a complete diagnostic picture.
Comprehensive System Analysis
- Diagnose and clear trouble codes from EFI, security, ABS, and gauge modules
- Monitor real-time sensor data for precise performance insights
- Test actuators like injectors, coils, and fuel pump for proper function
- Includes support for Thunder MAX EFI systems
Essential for Modern V-Twin Maintenance
Modern Harley-Davidson motorcycles rely heavily on sophisticated electronic control units. This diagnostic system simplifies the process of identifying and resolving issues that might otherwise require a trip to the dealership. It's a powerful tool for anyone serious about performance tuning, custom builds, or simply keeping their bike in top condition. Ensure you have a Windows-compatible computer ready for installation.
Specifications
- Brand: Diag4 Bike
- Manufacturer Part #: AT 531 5090
- Connection: USB interface with Harley-Davidson OBD adapter
- Software Compatibility: Windows XP, Vista, 7, 8, 10
- Dimensions: 10 in L × 8.5 in W × 3.5 in H
- Weight: 3.4 lbs
- Country of Origin: Czech Republic
Common questions
What systems can this diagnostic tool access?
The Diag4 Bike system can access and diagnose EFI, TSSM, HFSM, BCM, ABS, radio, and gauge systems on your Harley-Davidson motorcycle.
Is this compatible with my specific Harley-Davidson model?
This system is designed for Harley-Davidson workshops and tuning centers. Please use our Shop by Bike tool or contact us to confirm compatibility with your specific year and model.
Do I need a special computer to run this software?
The software is compatible with Windows XP, Vista, 7, 8, and 10 operating systems, requiring a computer with a USB port for the interface.
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 | 867-02005 |
| WEIGHT | 3.4 lb |
