Yes. You can also buy a Generic 4-wire like this for $ 35 + shipping: Replacement USOS-4000 Oxygen Sensor | Auto Parts Warehouse

Ah, too late. The Bosch one should be here midweek anyway, hopefully that will solve the problem. Then on to the sway bar bushings. Really appreciate your help on this.

Alright, so not surprisingly, the sensor is seized up and I can't get it out with my O2 wrench. I have a deep socket and a breaker bar but I can't fit the socket onto the sensor because the heat shield above the cat won't allow me the clearance, but I can't see how to get the heat shield off. Any tips?

Try soaking it first in PB Blaster. If that doesn't work, heat up the area with a torch. Try a crows foot. Install the new one with anti-seize.

I've got PB Blaster on it, the problem is getting enough leverage to put real torque on it. If I could get the heat shield off I can fit a socket, but the heat shield is attached with these circular-headed bolts I've never seen before, and I'm not sure how to remove it. Have you ever taken one of the shields off?

Those are blind rivets, but you can try a crows foot on the sensor, and don't need to take off the heat shield.

True, just need to find one. I'll try that tomorrow.

Got the crows foot, finally managed to break the old sensor out. Installed the new one, took the car out for 20 miles or so varying speeds, no CEL and no problems. Hopefully that's the end of it. Thanks again for all the help.

Hope you applied anti-seize...

Bosch sensors come with anti-seize applied, fortunately.