Replacement o-ring for the thermostat housing temp. sensor for the Mustang, Explorer, Sport Trac, Ranger. All V6 4.0 OHV engines. OEM sensor only, may or may not fit aftermarket sensors.

**Please order from my new web site at world wide web simmonsautosportz dot com**

I wrote it out this way so I could post it to let my customers know where to get the parts.