I found the front O2 sensor at Advance Auto Parts for $56
(less $20 with a promotion code: "RETMENOT123"
when you order online, or $36 + state tax. Order it online and pick it up at the local
store minutes later at the heavily discounted price. Not bad compared to $115 elsewhere
Bosch Premium Oxygen Sensor with OE SmartLink part 15727

SmartLink is a solderless 4-pole connector to reuse the old wiring harness.

From the Bosch installation guide:
> "Do NOT cut wires while removing the existing sensor from the vehicle."
> "Do NOT solder wires. Soldering wires will lead to early sensor failure."

First- I'd like to snip the old harness off at the sensor so I can use an ordinary socket.
Second- What's wrong with soldering? I have a basic mistrust of solderless connections.

As an aside, it was an adventure dealing with Advance's website and required
a phone call to their Texas service center to open an account, and afterwards
it was tricky to get the site to go through it's operations because of
a number of parasite operations present that were NOT allowed by my browser.

llnwd.net
liveperson.net
google.com
coremetrics.com
channelintelligence.com

I use Linux and a Mozilla Browser with the "Noscript" addon that reported all this
extra baggage. AAAK! Does Google participate in every internet transaction?!
I suppose the $20 heavy discount is the incentive to get datamined.

Bill