4x Oxygen O2 Sensor Set Upstream & Downstream For Toyota Highlander Lexus RX330 – ACS

Give your Toyota Highlander or Lexus RX330 a performance and efficiency boost with this complete set of four ACS oxygen sensors.

You get two upstream and two downstream sensors—everything you need to replace all four at once.

They're direct fit, with a snap-on mounting style and 4 wires each.

Part numbers include 234-4168, 234-4509, and 234-9042, plus OEM references like 894650E130 and 8946548110.

These sensors are designed to improve fuel trims, boost mileage, and can even give you a 15% increase in performance.

Installation is straightforward, and they're backed by a 3-year warranty.

If your check engine light is on or you're due for a tune-up, grab this set and get back to smooth driving.