Oxygen O2 Sensor Upstream 234-4646 Compatible with Chevy Buick Allure Lacrosse Lesabre Lucerne Astro Cavalier Cobalt Impala Malibu Pontiac Saturn

Fit good with the rest of the exhaust. Got here in good time.

I usually haven't purchased car parts from Amazon, just because it isn't the first place I start to look for them, but this was fast delivery, good price and worked as expected to fix the problem. I will look to Amazon in the future...

I installed this on my 2006 Buick Lucerne 3.8 and within 2 weeks it failed. Had to spend the money and get a much better one.

Wire to short

Arrived on time in excellent condition. Matches OEM that I replaced, fit, finish and connector. ODB2 CAT monitor cleared on first drive after installation and PID values look better. Make sure you have an O2 socket before you start to make replacement a ten minute job.

fit good seems to work fine. no more check engine light

Vehicle was running lean, check engine light went off after installation

The OE sensor had a o2 heater circuit fail, I replaced it with this cheap one, it fixed the heater circuit fault but caused a sensor switching fault. I bit the bullet and went to GM and bought the OE sensor. Problem solved - vehicle sailed right through system ready tests and passed DEQ.