Originally posted by Kremithefrog:
Upstream, OEM loan the socket from autozone.




I don't mind buying the tool for only 10$

The website you gave me does not say upstream.

"Sensor located in front manifold/exhaust pipe before catalyst"

Does "Sensor located in front manifold/exhaust pipe before catalyst" = Upstream?

1998 Mercury Mystique L4-2.0L
PN# 250-24016