Jim & All -
This is the superseded CHT (Bosch p/n 0-280-130-012) which does
not apply to the 73 MY GA000000 > GA006765 (or >>GA006766), but is the p/n still available as of this date at the parts suppliers.
The 73 MY 2.0s use a distinct 0-280-130-017 p/n CHT (now NLA), and won't run right on these -012's, along with some other resistors, etc. that go along with it for 73 MY, in order to match the "tune" of the 73 MY ECU etc.
Readers should refer to the D-jet parts chart for Cylinder Head Temperature Sensor at the link below:
http://members.rennlist.com/pbanders/DjetParts.htm