AZ2203210737 is a 12-speed transmission left-mounted booster small cover assembly, originally matched for Sinotruk HOWO, SITRAK, HW25712 and other models.
It integrates a left-mounted pneumatic booster mechanism, which greatly reduces shifting force, delivers light and effortless operation, and relieves driving fatigue.
The high-strength cast aluminum housing features shock resistance and durable construction. Its precise sealing structure effectively prevents oil and air leakage.
Internal transmission parts are precision machined with clear gear positions and smooth shifting.
With original standard dimensions, it supports direct replacement and easy installation. Suitable for complex working conditions, it is durable, stable and cost-effective.







