This rubber o-ring is for temp sensors 025906041A, 251919051, 251919051A. One o-ring is required per sensor.
You are buying one oring. The picture is just for reference.
Vanagon Idle Stabilizer Unit for all 2.1L Vanagons (86-91)
Three Wire Oxygen Sensor with OE connector
Oxygen Sensor for 97-2000 Eurovan with AES engine
Coil Pack for one cylinder of AXK engine 2001-03 Eurovan
Fuel Injector for 97-2000 Eurovan VR6
Splice in Oxygen Sensor with 2.1L Engine 86-92