Features: 1. OE Number: The referencing OE number of this USB CAN cable is 558-443, which is molded and designed based 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 easy. 4. Reliable Data Transmission: The solid construction ensures reliable, error-free data transmission for the EFI system, resulting in accurate tuning and diagnostic readings. 5. Fine Workmanship: 2-core design; the USB cable is sealed to protect against dirty environments and 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 Holley EFI Sniper EFI Terminator X Note: Please double-check the part number of your item; matching information is for reference only.