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Oversized Main Relay Valve KitPart No. 15741-70K Tooling: • F-15741-TL70 • VB-FIX Contents: • Relay Valve • Shuttle Valve • Spring Listed Aisin AW 6-speed units utilize a main relay and shuttle valve combination as a switch for 4th, 5th and 6th gear. As this bore wears vital control pressure escapes the circuit. This leads to valve sticking which results in loss of 4th, 5th and 6th Gear operation as well as possible gear ratio and solenoid codes. Reconditioning the bore and installing Sonnax oversized main relay valve kit 15741-70K eliminates these issues and restores normal shift operation. • Hardcoat anodized aluminum valves combat premature wear • Matched spring restores OE calibration