Sonnax 124740-26K Transmission 6F50 Valve Kit, 3-5-R Clutch Regulator

Other Part Number: S124741RAKManufacturer Part Number: 124740-26KBrand: Sonnax 6F50, 6F55, 6T70 (Gen. 1), 6T75 (Gen. 1) Oversized 3-5-R Clutch Regulator Valve KitPart No. 124740-26K Replaces 1.35 ratio OE valve with .390" dia. small spool. Tooling: F-124740-TL26 VB-FIX 3-5-R clutches in Ford 6F50, 6F55 and GM first generation 6T70 and 6T75 units are applied in third, fifth and Reverse gears in conjunction with other clutch packs. As the 3-5-R clutch regulator valve oscillates and strokes over time, bore deterioration results, which prevents proper hydraulic control of the 3-5-R clutch pack. This can cause flares, slipping, erratic clutch apply timing, ratio codes, bind-ups, and burnt 3-5-R clutches. Reconditioning the bore and installing Sonnax oversized 3-5-R clutch regulator valve kit 124740-26K restores normal shift operation by re-establishing the hydraulic integrity of the 3-5-R circuit.