Diag4 Bike Parallel Diagnostic System Adapter - 35 PIN Magnetti/Bosch - Harley & Indian 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 Parallel Diagnostic System Adapter for 35-pin Magnetti/Bosch EFI modules is engineered to measure input and output signals while your V-twin engine is running. This essential breakout box installs non-invasively between the EFI module and motorcycle wiring harness, ensuring normal engine operation during diagnosis. It's the ideal solution for comprehensive, real-time electronic fuel injection system analysis.
Why riders pick this
- Live signal measurement on running V-twin engines
- Compatible with 35-pin Magnetti/Bosch EFI
- Breakout box provides access to all connector pins
- Essential for accurate EFI system diagnosis
Understanding the intricate dance of signals within your V-twin's EFI system is key to proper diagnosis and tuning. The Diag4 Bike Parallel Diagnostic System Adapter offers unparalleled access to this data, allowing you to observe live signal behavior under actual operating conditions. This capability is crucial for identifying intermittent faults and verifying the performance of your fuel injection system.
Live Diagnostics for EFI Modules
- Compatible with 35-pin Magnetti/Bosch EFI connectors
- Breakout box design for live signal monitoring without interruption
- Provides access to all EFI module connector pins for measurement
- Enables diagnostics on running V-twin engines for accurate data
Pinpoint EFI Issues on Harley & Indian
This adapter is a must-have for anyone working on Harley-Davidson and Indian motorcycles equipped with 35-pin Magnetti or Bosch EFI modules. By allowing you to measure signals while the bike is running, you gain insights into system performance that static tests simply cannot provide. It’s an invaluable tool for professional technicians and serious enthusiasts looking to fine-tune or troubleshoot their V-twin's fuel injection.
Specifications
- Brand: Diag4 Bike
- Manufacturer Part #: AT 531 4015
- Length: 11.5 in
- Width: 7.25 in
- Height: 2.25 in
- Weight: 2.0437 lbs
- Country of Origin: Czech Republic
Common questions
Can I use this adapter while my motorcycle's engine is running?
Yes, this Diag4 Bike adapter is designed for live diagnostics. The breakout box sits between the EFI module and harness, allowing the bike to function normally while you measure signals.
What type of EFI connectors does this adapter fit?
This adapter is specifically for 35-pin Magnetti and Bosch EFI connectors, commonly found on various Harley-Davidson and Indian fuel injection systems.
Do I need a separate diagnostic tool to read the signals?
Yes, this adapter provides access points to the EFI signals. You will need a digital multimeter, oscilloscope, or other suitable test equipment to measure and interpret the signals.
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 | Engine Management |
| SKU | 867-02025 |
| WEIGHT | 2.04 lb |
