Features: 1.OE Number: The referencing OE number of this USB CAN cable is 558?443, which is molded and designed depend on the original data. 2.Fitment: The USB CAN communication cable is a replacement for Holley EFI Sniper EFI Terminator X, please check the model before ordering. 3.Simplified Connectivity: This harness allows for seamless communication between your PC or laptop and the EFI system, making tuning and diagnostics a breeze. 4.Reliable Data Transmission: The solid construction ensures reliable, error free data transmission of the EFI system, resulting in accurate tuning and diagnostic readings. 5.Fine Workmanship: 2core design, the USB cable is sealed to protect against dirty environments, provides real time tuning access to the ECU for a long service life. Specification: Item Type: USB CAN Cable OE Number: 558?443 Material: Plastic Core: 2 core Fitment: Fits for Holley EFI Sniper EFI Terminator X Note: Please double check the part number of your item, matching information is for reference only.