{"product_id":"ngk-chevrolet-avalanche-2500-2006-2003-direct-fit-oxygen-sensor","title":"NGK Chevrolet Avalanche 2500 2006-2003 Direct Fit Oxygen Sensor","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e: 21549\u003c\/p\u003e\n\u003ch4 class=\"p1\"\u003eNGK NTK 21549 Direct Fit Oxygen Sensor Chevrolet Avalanche 2500 (2003-2006)\u003cb\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003eEngineered by NTK, the world’s largest supplier of OEM oxygen sensors, this sensor is the top choice for drivers seeking unmatched reliability and superior engine performance. Designed specifically for the 2003-2006 Chevrolet Avalanche 2500, the NGK 21549 outperforms all competitors, delivering faster response times, reduced emissions, and optimal fuel efficiency. Trust NTK’s cutting-edge ceramic technology and rigorous testing to keep your vehicle running at its peak, making this the best oxygen sensor for your Avalanche.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eWhy NGK?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePerformance\u003c\/b\u003e: Features NTK’s premier technical ceramic sensing element with an integrated heater for rapid activation, reaching optimal operating temperature in seconds. This ensures quicker closed-loop control and significantly reduces cold-start emissions compared to Bosch, Denso, or AC Delco alternatives.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eDurability\u003c\/b\u003e: Platinum-coated for maximum longevity and equipped with a corrosion-resistant housing to protect against silicone and lead poisoning, outperforming cheaper aftermarket options.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePrecision Fit\u003c\/b\u003e: Direct-fit design with OE-style connectors and pre-coated threads for seamless, no-modification installation—saving you time and hassle.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eEmissions Compliance\u003c\/b\u003e: Meets or exceeds OEM specifications, guaranteeing smog test compliance and minimizing harmful emissions for eco-conscious drivers.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eTrusted by Manufacturers\u003c\/b\u003e: NGK\/NTK is the preferred choice of GM, Ford, and Chrysler, with a legacy of innovation since 1936, making it the most reliable brand for your Avalanche.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eIncluded:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003e1 NGK NTK 21549 Oxygen Sensor\u003c\/b\u003e: Direct-fit, 4-wire configuration with a 16.5-inch (420mm) wire length for precise fitment.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eOE-Style Connector\u003c\/b\u003e: No cutting or splicing required, ensuring a plug-and-play installation.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eProtective PTFE Filter\u003c\/b\u003e: Allows atmospheric oxygen to enter while blocking water and engine contaminants, enhancing sensor longevity.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePre-Coated Threads\u003c\/b\u003e: Simplifies installation and ensures a secure fit.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eComprehensive Fitment Guide\u003c\/b\u003e: Verified compatibility with your vehicle’s make, model, and year.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003ePart Number and Vehicle Fitment Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePart Number\u003c\/b\u003e: NGK\/NTK 21549\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eInterchange Part Numbers\u003c\/b\u003e: 234-4669, 15282, 12572705, 12600893, 12611870, 12617332, 8126008930\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eCompatible Vehicles\u003c\/b\u003e:\u003c\/li\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eChevrolet Avalanche 2500\u003c\/b\u003e (2003-2006, 8.1L V8, Downstream or Upstream positions, depending on configuration)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eCadillac Escalade\u003c\/b\u003e (2003-2006, 6.0L V8, Downstream)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eChevrolet Silverado 1500\/2500\/3500\u003c\/b\u003e (2003-2007 Classic, 6.0L or 8.1L V8, Downstream or Upstream)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eGMC Sierra 1500\/2500\/3500\u003c\/b\u003e (2003-2007 Classic, 6.0L or 8.1L V8, Downstream or Upstream)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eGMC Yukon XL 1500\/2500\u003c\/b\u003e (2003-2006, 6.0L or 8.1L V8, Downstream)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eHummer H2\u003c\/b\u003e (2003-2006, 6.0L V8, Downstream)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePosition\u003c\/b\u003e: Primarily Downstream (post-catalytic converter), but may fit Upstream positions depending on vehicle configuration. Verify fitment with your vehicle’s OEM number and position.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eInstallation and Compatibility Notes\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eEasy Installation\u003c\/b\u003e: Direct-fit design requires no special tools. Simply replace the existing sensor in its original position, ensuring the plug and wire length match your OEM sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eFitment Caution\u003c\/b\u003e: Confirm compatibility using your vehicle’s year, make, model, engine size, and OEM part number. For Avalanche 2500, check whether the sensor is for Upstream (pre-catalytic converter) or Downstream (post-catalytic converter) applications.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eTorque Specification\u003c\/b\u003e: Install with a torque of 65±2N for optimal sealing and performance.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":43230184374351,"sku":"NGK21549","price":220.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/NGK_21549_Oxygen_Sensor_for_Chevrolet_Avalanche_2500_2003-2006.jpg?v=1751308930","url":"https:\/\/www.blackopsautoworks.com\/products\/ngk-chevrolet-avalanche-2500-2006-2003-direct-fit-oxygen-sensor","provider":"Black Ops Auto Works","version":"1.0","type":"link"}