1、Oem Number: Communication cable replace part number is 558 443 2. Please make sure the Oem number matches the part you are replacing. 2、High Compatibility: The Can to USB communication cable provides users with real time tuning access to Ecu, making it compatible with for Holley Efi, for Sniper Efi, and for Terminator X debugging software. 3、Y Splitter: This cable features a built in splitter that allows for Can bus distribution, ensuring a seamless connection without the need for additional Y splitter cables. Simply plug and play. 4、Strong Sealing: The USB cable is sealed to protect against dirty and harsh environments. The connector cable is specifically designed to suit selected for Holley Efi systems. 5、Stable Connection: With this cable, you can connect your laptop and touch screen at the same time, it is a perfect add on component that ensures a reliable and hassle free connection to any screen.