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Oil pressure builds up in unused cavities under the separator plate causing the plate to flex upwards as much as
this new kit delivers 10 psi increase at lower pressure range and 25 psi increase at higher pressure ranges
causing the screws to loosen and break
*** Transmission removal and disassembly is necessary for installation of this kit ***
G3™ Friction
Sonnax 76948-02K Pressure Regulator Boost Valve & Sleeve Kit 4R70E AODE 4R75E Featured Products Oil pressure builds up inManufacturer Part Number: 76948 02K Other Part Number: S76741PK Brand: Sonnax Manufacturer Warranty: Yes 4R70E, 4R70W, 4R75E, 4R75W, AODE Boost Valve Kit Part No. 76948 02K Fits '91 later units. Ford vehicles with 4R70E, 4R70W, 4R75E, 4R75W and AODE transmissions may exhibit insufficient line rise in Reverse, delayed or slipping Reverse, and or a burnt Reverse clutch. Continuous oscillation of the OE boost valve within the boost sleeve causes
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