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2PCS Upstream Oxygen O2 Sensor OEM for Chevy Silverado GMC Yukon Sierra 234-4669 Items Description Have any questions, please contact us first and we will do our best to solve it for you. Lifetime Warranty，feel free to buy without worries. Original standard, direct replacement for the old or broken one. Made with high quality material for maximum durability... Package included 2X Upstream O2 Oxygen Sensor（15% increase in performance and energy） FeatureHigh PerformanceCorrosion-resistant st...

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