Explore how 234-4337 4PCS Oxygen sensor 234-4337 x2 234-4258 x2 o2 sensor for 2009-2008 Hummer H2 6.2L 02 Sensor can simplify your busy lifestyle — now at the best price. Offers impressive value at a competitive price point. Order today on Aioslef.college — fast shipping and competitive prices guaranteed.