I have an 81 hatch. I went to replace me oxygen sensor which unplugs like and looks very similar to a spark plug. Autozone shows my replacemnet as being different. theirs has a single small wire coming off of it. What gives?

The O2 sensor connection really isn't that important, as long as you have a good connection. You can cut and crimp on matching connectors(male & female). Just be sure to tape up or shrink tape the connection to keep it from corroding. Also, if your not in a hurry to get one, check ebay. There are some on there for less than $20 including shipping. That's probably half of what Autozone wants for one. I got a Borg Warner one on Ebay once to replace a Bosch that made my car run like crap.

 

Here's one. The pic shows a plate on the end, but if it comes with it, you can just unscrew the sensor from it.

http://cgi.ebay.com/ebaymotors/O2-OXYGEN-SENSOR-BW-1WF-SG16-Subaru-DL-1988_W0QQcmdZViewItemQQcategoryZ33557QQihZ010QQitemZ200137753882QQrdZ1QQsspagenameZWD1V

The O2 sensor connection really isn't that important, as long as you have a good connection. You can cut and crimp on matching connectors(male & female). Just be sure to tape up or shrink tape the connection to keep it from corroding. Also, if your not in a hurry to get one, check ebay. There are some on there for less than $20 including shipping. That's probably half of what Autozone wants for one. I got a Borg Warner one on Ebay once to replace a Bosch that made my car run like crap.

 

Here's one. The pic shows a plate on the end, but if it comes with it, you can just unscrew the sensor from it.

http://cgi.ebay.com/ebaymotors/O2-OXYGEN-SENSOR-BW-1WF-SG16-Subaru-DL-1988_W0QQcmdZViewItemQQcategoryZ33557QQihZ010QQitemZ200137753882QQrdZ1QQsspagenameZWD1V

thank you for the quick response. I may wind up going that route. I'm just one of those who hates to cut and splice anything. I want to stay as original as possible.