Genuine Nissan Washer Valve Suits: ALL GQ & GU Patrol Wagon and SWB Models This is the one way valve that stops your rear washer jet from dribbling down the back of your car and emptying your washer bottle when parked on a hill. On a GQ this is fitted in the right hand 1/4 Panel, behind the taillight. On a GU this is fitted inside the large Barn Door.
