This 4304317 sliding clutch (transmission sliding sleeve) is a core shifting component for Eaton Fuller manual transmissions. It slides along the shaft splines to engage and disengage the gear, realizing gear shift operation. Made of high-strength alloy steel, carburizing quenching heat treatment, high hardness gear tooth surface, strong wear resistance and impact resistance. Precision internal spline machining ensures smooth sliding movement without sticking. Every sliding clutch passes dimension and hardness inspection before delivery. It is an essential replacement spare part for heavy truck transmission overhaul.