Improperly functioning air cut-off valves can stick open or closed, causing poor running conditions and popping during deceleration. Air Cut-Off Valve Kit includes O-rings, diaphragm, spring and screws necessary to rebuild the air cut-off valve circuit.
This Part Fits: 
 
  This Part Fits:
| Year | Make | Model | Submodel | 
|---|---|---|---|
| 1999-2004 | Yamaha | YFM250 Bear Tracker | Base | 
| 1987-2004 | Yamaha | YFM350X Warrior | Base | 
| 1998-1999 | Yamaha | YFM400F Kodiak 4x4 | Base |