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Sonnax 4L60E Transmission Boost Valve Kit 77898E-3K 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 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 Contents Valve Sleeve O-Rings (2) This is an actual picture of the item for sale. This is NOT a generic picture. Please provide a valid We will ship worldwide! If your country is not listed as a ship to location, please contact us for a *If you don't see what you need here, contact us and we will list it here on eBay. We have hundreds of bearing kits and all kinds of hard parts available. You can reach us by messaging us through eBay with any questions you may have. |