This gearbox repair kit is a complete overhaul spare parts package for SHACMAN heavy truck transmission. It integrates commonly worn parts required for gearbox disassembly and maintenance, including bearings, oil seals, gaskets, O-rings, snap rings, thrust washers, lock washers and other consumables. All components adopt matched specifications, which can effectively repair gearbox faults such as oil leakage, abnormal noise, gear wear and bearing failure. Each spare part is strictly inspected before packaging. The kit saves the time of purchasing separate parts, ensures matching accuracy during overhaul, and restores the gearbox to normal working performance. Suitable for transmission maintenance of heavy trucks. We maintain sufficient inventory and stable bulk supply for repair workshops, fleet operators, auto spare parts dealers and global cross-border export customers.