Full Name: Dongfeng DF5S300 5-Speed Manual Transmission (Mechanical, Overdrive/Direct Drive Versions)

Speed: 5 forward, 1 reverse, manual shift

Core Parameters: Max input torque 300N·m (3200rpm); main box center distance 100mm; 2–3 gears with inertia lock – pin synchronizers, 4–5 gears with inertia slider – type synchronizers, 1/R gear with sliding sleeve; weight 100kg; oil capacity 3.5L; gear ratios vary by version (overdrive 1: 1st 4.711, 2nd 2.609, 3rd 1.514, 4th 1.000, 5th 0.788, reverse 4.263; overdrive 2: 1st 5.169, 2nd 2.863, 3rd 1.661, 4th 1.000, 5th 0.753, reverse 4.667; direct drive: 1st 6.802, 2nd 3.767, 3rd 2.186, 4th 1.424, 5th 1.000, reverse 6.154)

Fit For: Light – medium commercial vehicles (8–10T), 10–19 – seat buses (e.g., Dongfeng Fengshang EQ6600L4D, Shaolin SLG6607C5E), urban buses, light logistics trucks, 110–130hp commercial vehicles (matching Yuchai YC4FA115 series engines)

Vehicle Brand Fitment: Dongfeng (Fengshang, EQ6570 chassis), Foton, Shaolin Bus, King Long Light Bus

Key Features: Lightweight (100kg) for fuel efficiency; multi – type synchronizers for smooth shifting; vertical installation for flexible layout; manual remote control; GL – 4 gear oil applicable; reliable for light – heavy load cycles; cost – effective maintenance