Diameter * diameter * thickness - tooth number x of the inner diameter of the spline: 325 * 190 * 9.6 -- 10 x 38.4 models: Dongfeng, Yang Chai, Chaoyang, East Lake, Yuchai 140, Yuchai YC4105 engine models: Dongfeng EQ140, EQ1090F, 6102 (Chaoyang, Yang Chai), JAC, Tai Ling Dongfeng & nbsp; above all product information is for reference only