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
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Sonnax 77917-04K TV Boost Valve Kit .500 Dia., Factory-Style Sleeve (No O-Ring)
22771-19K - Chrysler 42RE/42RH/46RE/46RH/47RE/47RH/48RE And A727, A904 Transmission Sonnax Oversized Lockup Boost Valve Kit
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