Oxygen Sensor 12665163 Compatible with 234-4974/12657188/12661898

Oxygen sensor 12665163 designed for 2014–2018 Chevrolet Silverado 1500, GMC Sierra 1500 (5.3L or 6.2L V8) and 2015–2019 Cadillac Escalade; ensures precise monitoring of exhaust oxygen content to optimize the air-fuel ratio, improve fuel economy, and reduce emissions. OEM number 12665163, also compatible with 234-4974, 12657188, 12661898 among others for quick cross-checks.