MSparts INLINE6 Heavy Duty Truck Diagnostic Tool is a professional data link adapter designed for complete heavy-duty vehicle diagnostics, fully compatible with Cummins INLINE 6. Preloaded with V8.7 and V7.62 diagnostic software, it supports SAE J1708/J1587 and J1939/CAN communication protocols and meets RP1210 industry standards. This heavy-duty scanner delivers stable, high-speed data transmission to perform fault code reading, parameter monitoring, system testing, and maintenance programming for a wide range of heavy-duty trucks and commercial vehicles. With reliable USB and RS-232 connectivity, strong anti-interference performance, and broad vehicle coverage, it is an ideal diagnostic solution for truck repair shops, fleet maintenance teams, and professional technicians to efficiently troubleshoot and service heavy-duty equipment.