Automost 4Pcs Oxygen Sensor Upstream & Downstream 234-4940 234-4974 Compatible for 2014-2020 Chevrolet Silverado 1500 Suburban Tahoe GMC Sierra 1500 Yukon XL Cadillac Escalade 234-8081 234-8088

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• [Replacement Part Numbers]: 234-4940, 234-4974, 234-8081 234-8088. Check part numbers to ensure an exact match.
• [Compatibility]: Compatible for Chevy: Silverado 1500 2014-2018 4.3L 5.3L 6.2L（5.3L Exc. Electric/Gas）, Silverado 1500 &Legacy 2019 5.3L, Suburban 2015-2020 5.3L, Tahoe 2015-2020 5.3L; Compatible for GMC: Sierra 1500 2014-2018 4.3L 5.3L 6.2L（5.3L Exc. Electric/Gas）, Sierra 1500 Limited 2019 5.3L, Yukon 2015-2020 5.3/6.2L, Yukon XL 2015-2020 5.3/6.2L; Compatible for Cadillac Escalade 2015-2020 6.2L
• [Function]: Monitors the oxygen level to help manage fuel combustion—essential for resolving issues like poor fuel economy, rough idling, or a lit check engine light due to faulty upstream or downstream sensor readings.
• [OEM Design]: Our oxygen sensor is crafted from premium materials for accurate readings. Built for durability and reliability, it meets OEM standards, supports smooth engine performance, and offers easy installation.
• [Confidence with Coverage] Includes both upstream and downstream sensors, coverage for lasting performance and peace of mind on the road.