Actuator Feed Limit Valve Boring Kit W/Tools 4L80E, 4L85E 1991-on This kit includes all the tools, valves and springs you will need to repair the actuator feed limit on General Motors vehicles equipped with 4L80E and 4L85E automatic transmissions. If you already have the reaming tool and guide, order TransGo part # 48-ACT-VL6. Corrects/Prevents/Reduces: No or low line pressure boost Erratic line pressure Wrong gear starts Clutch plate burn up Neutrals on highway Codes P0731, P0732, P0734, P0751 and P0756 Includes: (6) Oversized actuator feed limit valves (6) orange springs (6) plain springs (4) white springs Reaming guide Reaming tool