Sonnax 34200-16K Transmission Actuator Feed Limit Valve Kit 4L80E 91-18

Brand: Sonnax Other Part Number: S34741LK Type: Valve Body Interchange Part Number: S34741FK Items Included: Valve, Sleeve, Long and Short Spring, Retainer Manufacturer Part Number: 34200-16K Material: Aluminum Universal Fitment: Yes Vintage Part: No  Performance Part: No 4L80-E, 4L85-E Transmission Actuator Feed Limit Valve KitPart No. 34200-16K Tooling Required: 77754-TL The actuator feed limit (AFL) valve in GM 4L80-E and 4L85-E units has a large reaction area and is greatly affected by side loading, which wears the valve body bore. The EPC solenoid oscillates the torque signal and AFL oil, which increases valve action and accelerates wear. As bore wear increases, oil pressure is reduced to the shift solenoids, which causes solenoid and ratio codes. The same AFL oil loss results in lower line pressure. Installing Sonnax actuator feed limit valve kit 34200-16K corrects AFL oil pressure loss, restoring shift solenoid pressure to prevent wrong gear starts and other shift concern