Got a check engine light or bad fuel economy on your GM 6.
2L?
This oxygen sensor – part number 12655677 – is a heated 4-wire unit that fits Cadillac CTS, Chevrolet Corvette, and Camaro models.
Positions are left upper or right upper – upstream sensors.
Cross-references include 12627139, 12645561, and 234-4763, so you know it's the right one.
Brand new, high quality, unbranded but works like OEM.
It's a direct fit, no hacking or splicing – just unplug the old one, thread this in, and reconnect.
Comes with a 1-year warranty.