This kit has the throttle shaft. top cover gasket, two fibre washers for the studs that hold the cover on, and four o-rings (two for the throttle shaft and two for the shut-off shaft.) They are the same size o-ring for both shafts.
This kit solves fuel leaks from where the throttle shaft enters the top cover of the pump. Sometimes only the O rings need replacing and we sell these separately. These leaks tend to be more noticeable in cold weather, and can allow fuel to run back to the tank making the engine difficult to start without priming the pump.
Please supply your pump number and/or application when ordering (this shaft won’t fit Ford tractors)