Full Name: Dongfeng DT1425 14-Speed Manual Transmission (Heavy-Duty, 2×4×2 Structure, OD/Direct Drive Versions)

Speed: 14 forward, 2–4 reverse, manual shift (pneumatic-assisted)

Fit For: 30–40T heavy trucks, tractors, long-haul logistics vehicles, 420–560hp commercial vehicles (matching Dongfeng DDi13, Renault dCi11, Dongfeng Cummins ISZ series engines)

Vehicle Brand Fitment: Dongfeng (Tianlong KL/KX, Tianlong Flagship), Foton Auman, Shacman, Beiben Trucks