Downstream Oxygen Sensor For GMC Acadia 3.6L V6 – O2 Sensor 234-4565 / 234-4566, Direct Replacement, 3-Year Warranty

If your GMC Acadia with the 3.6L V6 is throwing a check engine light for the downstream oxygen sensor, this replacement might clear it up.

It’s a new, unbranded O2 sensor that crosses with part numbers 234-4565 and 234-4566.

It’s a direct-fit replacement for the downstream (post-cat) position.

Comes with a 3-year warranty.

Before ordering, double-check that it matches your specific year and model—use the compatibility chart.

If you’re handy with a wrench, this is a cheaper alternative to the dealer part.