Sonnax 77917-500 Throttle Valve Boost Valve Kit .500" Dia., O-Ring Style
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Sonnax 77917-500 Throttle Valve Boost Valve Kit .500" Dia., O-Ring Style

$12.24
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Brand: Sonnax Other Part Number: S74507TK Items Included: Performance Line Pressure Boost Valve Kit Manufacturer Part Number: 77917-500 Material: Steel Universal Fitment: Yes Vintage Part: No Performance Part: Yes 200-4R, 700R4, 4L60 Transmission TV Boost Valve Kit Part No. 77917-500 .500" Dia., O-Ring Style A common problem in GM 200-4R and 4L60 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leakage. The Sonnax TV boost valve kits 77917-01K (.423" dia.), 77917-471 (.471" dia.) and 77917-500 (500" dia.) eliminate these problems for a variety of applications. For minimal line pressure in V8 applications, use Sonnax TV boost valve kit 77917-01K. Throttle valve boost valve and sleeve are made from made from hardened steel for better wear resistance O-Rings on sleeve separate throttle pressure and Reverse boost circuits, providing additional protection against cross-leaks O-Rings prevent loss of oil between the outsi

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