200-4R, 4L60
TV Boost Valve Kit
Part No. 77917-500
.500" Dia., O-ring style
A common problem in GM 4L60 transmissions is burnt bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leakage. Sonnax TV boost valve kit 77917-500 will eliminate these problems for a variety of applications, and will boost pressure higher than TV boost valve kit 77917-471(not included) due to the increased .500" valve spool ratio.
- Returns higher pressure than OE-ratio valve
- Boost valve and sleeve are 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 outside diameter of the throttle valve sleeve and pump body
- Valve
- Sleeve
- O-Rings (2)
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