{"product_id":"ntk-21066-oxygen-sensor","title":"NTK 21066 Oxygen Sensor - Downstream Left or Downstream Right","description":"\u003ch2\u003eOverview of NTK Direct Fit Oxygen Sensor 21066\u003c\/h2\u003e\u003cp\u003eThe NTK Direct Fit Oxygen Sensor 21066 is engineered for precise emission control in select GM vehicles. Designed as a heated oxygen sensor with a specific fit, it ensures accurate air-fuel mixture readings for optimal engine performance and reduced emissions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor type for faster response times\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Cadillac, Chevrolet, and GMC models\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18mm thread diameter\u003c\/li\u003e\n\u003cli\u003eFour-wire configuration for reliable signal transmission\u003c\/li\u003e\n\u003cli\u003e15-inch wiring harness length for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThis NTK oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor accuracy and reducing emissions during cold starts. The sensor’s four-wire design supports both the sensor signal and heater circuit, ensuring consistent performance. With a threaded mounting type and an 18mm thread diameter, the sensor securely installs in the exhaust system. The 15-inch wiring harness length provides sufficient reach for direct connection without modification.\u003c\/p\u003e\u003ch2\u003eAbout the NTK Direct Fit Oxygen Sensor Line\u003c\/h2\u003e\u003cp\u003eThe Direct Fit Oxygen Sensor line by NTK is developed to provide exact replacement sensors tailored to specific vehicle applications. This product line focuses on delivering sensors that match OEM specifications, including wiring, connectors, and mounting, to simplify installation and maintain factory performance standards. The 21066 sensor is part of this line, designed specifically for various Cadillac, Chevrolet, and GMC models.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Common Applications\u003c\/h2\u003e\u003cp\u003eThis oxygen sensor is compatible with a range of GM vehicles, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCadillac Escalade, Escalade ESV, Escalade EXT\u003c\/li\u003e\n\u003cli\u003eChevrolet Avalanche, Camaro, Caprice, Corvette, Silverado 1500\/2500 HD\/3500 HD, Suburban 1500\/2500, Tahoe\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 1500\/2500 HD\/3500 HD, Yukon, Yukon XL 1500\/2500, SS\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to address issues such as:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light triggered by faulty oxygen sensor\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy due to incorrect air-fuel mixture readings\u003c\/li\u003e\n\u003cli\u003eIncreased emissions and failed emissions tests\u003c\/li\u003e\n\u003cli\u003eEngine performance problems like rough idling or hesitation\u003c\/li\u003e\n\u003cli\u003eSensor heater circuit malfunctions causing delayed sensor response\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the vehicle is cool before sensor replacement to avoid burns\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools for the 18mm threaded sensor to prevent damage\u003c\/li\u003e\n\u003cli\u003eVerify wiring harness length and connector compatibility before installation\u003c\/li\u003e\n\u003cli\u003eDo not over-tighten the sensor; follow torque specifications\u003c\/li\u003e\n\u003cli\u003eClear any diagnostic trouble codes after installation to reset the system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNTK oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The Direct Fit Oxygen Sensor 21066 undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, NTK typically offers coverage against defects in materials and workmanship to support long-term use.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":43961907216565,"sku":"BFPZ-21066","price":65.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_21066_Fro.jpg?v=1775006696","url":"https:\/\/www.partcatalog.com\/products\/ntk-21066-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}