700R4 200-4R .500″ Boost Valve with O-Rings Sonnax Number 77917-500

$ 18.00


700R4 200-4R .500 of an Inch Boost Valve with O-Rings Sonnax Number 77917-500.

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 leakage. The Sonnax drop-in TV boost valve kit number 77917-500 (500″ dia.) eliminate these problems for a variety of applications.

  • Throttle valve boost valve and sleeve are made from 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
  • Drop-in Zip Valve parts install quickly and easily

Additional information

Weight 1 lbs
Dimensions 4 × 4 × 2 in