Sonnax TV Boost Valve Kit - 77917-04K
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 leaka
Sonnax 77917-04K TV Boost Valve Kit .500 Dia., Factory-Style Sleeve (No O-Ring)
Sonnax 4L60 (700-R4)
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Sonnax Boost Valve Kit - 36946-04K
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