{"product_id":"ntk-21049-oxygen-sensor","title":"NTK 21049 Oxygen Sensor","description":"\u003ch2\u003eOverview of NTK Direct Fit Oxygen Sensor 21049\u003c\/h2\u003e\u003cp\u003eThe NTK Direct Fit Oxygen Sensor 21049 is engineered for precise emission control in select GM and related 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 select Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Oldsmobile models\u003c\/li\u003e\n\u003cli\u003e16.75-inch wiring harness length for proper installation\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\u003c\/ul\u003e\u003ch2\u003eAbout the Direct Fit Oxygen Sensor Product Line\u003c\/h2\u003e\u003cp\u003eThe NTK Direct Fit Oxygen Sensor line is designed to provide exact replacement sensors that match OEM specifications. This product line focuses on direct compatibility with vehicle-specific connectors and mounting styles, reducing installation time and ensuring proper sensor operation. The 21049 sensor is part of this line, offering a direct fit solution for various GM and related models.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe NTK 21049 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving emission control efficiency shortly after engine start. Its four-wire design supports both the sensor signal and heater circuit, ensuring consistent performance. The 18mm threaded mounting type matches factory specifications, providing a secure and leak-free installation. With a wiring harness length of 16.75 inches, this sensor accommodates the routing requirements of compatible vehicles without modification.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Common Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCadillac Escalade, Escalade ESV, Escalade EXT, CTS\u003c\/li\u003e\n\u003cli\u003eChevrolet Avalanche, Silverado 1500, Suburban 1500, Tahoe, Trailblazer\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 1500, Sierra 1500 Classic, Yukon, Yukon XL 1500, Yukon XL 2500, Envoy, Envoy XL\u003c\/li\u003e\n\u003cli\u003eHummer H2\u003c\/li\u003e\n\u003cli\u003eIsuzu Ascender, Bravada, Rodeo, Safari\u003c\/li\u003e\n\u003cli\u003eOldsmobile models compatible with the sensor specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by NTK Oxygen Sensor 21049\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck Engine Light triggered by faulty oxygen sensor readings\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy due to incorrect air-fuel mixture data\u003c\/li\u003e\n\u003cli\u003eIncreased emissions failing vehicle inspections\u003c\/li\u003e\n\u003cli\u003eEngine performance issues such as rough idling or hesitation\u003c\/li\u003e\n\u003cli\u003eFailed emissions tests related to sensor malfunction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the vehicle is cool before sensor removal to avoid burns. Use an oxygen sensor socket or appropriate tool to prevent damage to the sensor or wiring. Verify the wiring harness length and connector type match the vehicle’s factory setup. Apply anti-seize compound to the threads if not pre-coated, but avoid contaminating the sensor tip. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.\u003c\/p\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 21049 undergoes rigorous testing to ensure reliable operation under various driving conditions. Warranty coverage details should be confirmed with the distributor or vehicle manufacturer, as they may vary by region and application.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":43961883001013,"sku":"BFPZ-21049","price":57.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_21049_Fro_de757be4-8e2d-47be-93b4-64c8a8c222d9.jpg?v=1775006692","url":"https:\/\/www.partcatalog.com\/products\/ntk-21049-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}