2pc Upstream & Downstream O2 Oxygen Sensors For 2008 Pontiac Grand Prix 3.8L

This bundle includes both upstream and downstream oxygen sensors for a 2008 Pontiac Grand Prix with the 3.8L engine.

Made by Autodayplus, they’re a direct screw-on replacement—no splicing or mods needed.

Thread size is M18*1.5, and they’ve got blade terminals with 4 wires each.

Heated sensors mean they reach operating temp faster, so your engine management gets accurate data sooner.

Covered by a 1-year warranty, they’re a solid pick if your Grand Prix is throwing O2 codes or just not running quite right.

Interchange numbers include 234-4646, 12563345, and more.