ACS 4-Pack Upstream & Downstream O2 Oxygen Sensor Set For 2014-2017 Infiniti Q50 QX50 3.7L

Got a check engine light related to oxygen sensors on your 2014-2017 Infiniti Q50 or QX50 with the 3.7L engine?

This ACS 4-pack has you covered.

You get all four—both upstream and downstream sensors—so you can replace the whole set and be done with it.

They're direct replacement, bolt-in style with screw-in mounting.

Each sensor comes with a dust shield and wire harness, blade and bullet terminals.

Part numbers cross to 234-4535 and 234-9148.

They claim a 15% performance increase, but mainly they'll get your fuel trims back in line and shut that check engine light off.

Easy installation, direct fit.

UPC 768387794928.

If you're doing all four at once, this kit saves hunting them down individually.