Oxygen O2 Sensor for Chevy Silverado & GMC Sierra 1500 2014-2017

Oxygen O2 Sensor for Chevy Silverado & GMC Sierra 1500 2014-2017

• ✅【Vehicle Fitment for Chevrolet for GMC for Cadillac】Compatible With Silverado 1500 2014-2017（4.3L V6 / 5.3L V8 / 6.2L V8),Tahoe 2015-2018（5.3L V8 / 2018 6.2L V8), Suburban 2015-2018 5.3L V8.Compatible With GMC Sierra 1500 2014-2017（4.3L V6 / 5.3L V8 / 6.2L V8),Yukon 2015-2018（5.3L / 6.2L V8）,Yukon XL 2015-2018（5.3L / 6.2L V8）,Compatible With Cadillac Escalade 2015-2018 6.2L V8.
• ?【Replace Part Numbers】 Package includes 234-4940 ×2 (Upstream Wideband) and 234-4974×2 (Downstream Narrowband).Set of 4 Oxygen O2 Sensor Upstream & Downstream replaces234-4940(2344940, 2344820, 2348081, 12659516, 21097, 18273, 2344940, 12637679, 12666612),and 234-4974(2344974, 2348085, 12661898, 21071, 15742, 12627140, 12643708, 12643903, 12661898, 2344762, 12657188, 12665162, 2348088, 21075, 15742, 2344974, 15673251).Replacement part matches factory specs perfectly —Plug-and-play installation for fast, hassle-free replacement.
• ⚡【Fast Response & Smoother Driving】This Air Fuel Ratio Sensor accurately tracks the engine air-fuel ratio across all driving conditions, delivering rapid signal response and real-time data feedback for a more refined, responsive ride. It ensures stable power output and smooth, consistent acceleration while reducing engine hesitation, vibration, and rough idle to significantly enhance overall drivability. Built with intelligent sensing technology, it maximizes fuel efficiency, save money on gas, and delivers enhanced performance for longer drives.
• ?️ 【Premium O2 Sensor Sensing Material】This precision 02 sensor constructed with high-strength 430L stainless steel for superior heat and corrosion resistance. Features high-performance Japanese ceramic sensor and platinum grid to ensure stable working performance. Every oxygen sensor strictly undergoes aging test, high-low temperature cycle test, air tightness test, power-on test and vehicle model simulation test before shipment. It reaches up to 45,000 miles durable service life and effectively prevents premature failure. All units are 100% fully tested by AIUSLN factory for dependable quality and peace of mind.
• ? 【Easy Installation & Direct Plug-In】Precision-matched connector requires no cutting or splicing. Professional installation steps: cool engine & disconnect battery; remove old sensor with 7/8 inch wrench; apply anti-seize to threads; hand-thread & torque to 30–40 ft-lbs; reconnect connector & clear OBD-II codes.⚠️Position Fits:234-4940,Upstream,Front,Bank 1 Sensor 1,Bank 2 Sensor 1, 234-4974,downstream,Bank 1 Sensor 2,Bank 2 Sensor 2
• ? 【18-Year Trust & Professional Support】AIUSLN is a reliable O2 sensor brand with 18 years of professional production experience. We offer 24/7 customer service and 2-year warranty. Free pre-sales fitment confirmation is available, along with professional troubleshooting for common fault codes including P0130, P0140, P0136, P0420 and more.Note: If the trouble code remains after installation, the issue is generally caused by defective intake system parts or a faulty catalytic converter, which requires cleaning or replacement.