This 8-piece automatic transmission solenoid set is designed for use in 722.9 7-speed automatic transmissions.It is compatible with select models including S500, S550, S600, W221, S300, and S350 equipped with the A220 transmission.The set includes solenoids that correspond to manufacturer part numbers such as 2202771098, 2202770198, 2202770898, and 2202770998, among related variants.These components are intended for maintenance and repair of hydraulic control systems in 722.9 transmissions and help regulate shift timing and pressure control for consistent gear transitions.Package includes one set of eight solenoids.