Seller notes

700R4 4L60 200-4R Transmission Sonnax TV Boost Valve & Sleeve Kit 500" Dia., Factory-style sleeve (no O-rings)A common problem in 700-R4 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leakage. The Sonnax replacement assemblies 77917-02K, 77917-03K, and 77917-04K eliminate these problems.TV boost valve and sleeve are manufactured from hardened steel for better wear resistance.Kits available in three sizes for .423", .471" and .500"...

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