5ktq oxygen sensor threads

[John Larson]

Special order an 18mm-1.25 tap?  Older Ford spark plug thread size.  Any old
line auto parts store and most auto machine shops would carry or have these.
Of course, the chain stores have driven most of the REAL auto parts stores
out of business.  One such tap came in my el cheapo Chinese tap set from
Harbor Freight.
An interesting aside. I noticed Jesse James of TV fame is shilling for Auto
Zone now.  If he's telling the truth and is actually using them as the
primary source for his parts, he's not as smart as I thought.  Cheap junk
parts for inflated prices ...................  John