Sonnax 55-50SN 55-51SN Transmission Remanufactured Linear Solenoid Kit 59947-70K Aisin AW 55-50SN, 55-51SN, AF23/33 and RE5F22A linear solenoids are used to control line rise (SLT), the converter clutch (SLU) and the oil flow rate and accumulation for the clutch circuits (SLS). The flow-to and function of these solenoids overlap, making diagnosis difficult. The solenoids are prone to sticking of the internal pintle, creating inconsistent movement of the solenoid valves. Shift complaints and pressure/flow related issues result. Remanufactured linear solenoid kit 59947-70K was developed with an exclusive Sonnax process that eliminates sticking solenoid problems. These solenoids are 100% leak tested and calibrated to OE specifications. Readjustment should not be required if the valve body leakage has been addressed and a relearn process completed. Eliminates pintle sticking problem for proper solenoid valve action 100% tested and calibrated Contents SLS Solenoid, Green SLT Solenoid, Blue SLU Solenoid, Black