2-Pack O2 Oxygen Sensors – Upstream & Downstream For 2006 Hummer H3 3.5L L5 (Replace 12592591, 12592592)

Fix your check engine light with this pair of O2 sensors for your 2006 Hummer H3 with the 3.5L L5 engine.

This set includes both the upstream and downstream sensors.

They're direct-fit, 4-wire narrowband sensors with a heated element.

They feature double sealing technology with seal gaskets and rubber plugs for a tight fit.

The wiring harness lengths are 311mm for the upstream and 396mm for the downstream.

They're made with a zirconia element and a 310s stainless steel protective sleeve.

They replace OEM numbers 12592591 and 12592592.

Comes with a 1-year warranty.

Just a heads-up on the California Prop 65 warning.