App-autoparts 3-Piece Oxygen Sensor Set – Upstream & Downstream – For 96-01 GMC Jimmy/Sonoma 4.3L – Direct Fit, Heated, 4-Wire

Got a check engine light on your 1996-2001 GMC Jimmy or Sonoma with the 4.3L V6?

Probably time for some oxygen sensors.

This is a complete set of three from app-autoparts.

It includes both upstream (front, before the cat) and downstream (rear, after the cat) sensors.

They're direct-fit, heated, narrow-band sensors with 4 wires each.

The thread size is M18, hex size is 7/8 inch, and they use a blade terminal with a screw-on attachment.

They're made of metal and are plug-and-play—just wire them in and you're good to go.

The part numbers cross to E2344012, E-SG454, and EA234-4012.

They come with a 1-year warranty.

Get your fuel trims back in line and pass that emissions test.