Seller notes

Oversized Pressure Regulator ValvePart No. 77917-06A worn OE pressure regulator valve can be detected in two ways. The first is a dynamometer test that reveals low line pressure during boost conditions (look for 50-100 psi less than specified in Reverse). The second is vehicle symptoms such as clutch slippage, reverse chatter and 3-4 clutch failure. Any of the above problems indicate bore wear that should be addressed.To address pressure regulator leakage in GM 4L60, 200-4R pump covers, Sonnax o...

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