{"product_id":"blpextrm-o2-sensor-kit-4pcs-for-2006-07-chevy-gmc-cadillac-upstream-downstream-direct-fit","title":"BLPextrm O2 Sensor Kit 4PCS for 2006–07 Chevy GMC Cadillac — Upstream \u0026 Downstream, Direct-Fit","description":"\u003cp\u003e\u003cstrong\u003eBLPextrm 4PCS Oxygen O2 Sensor kit replaces upstream and downstream sensors for select 2006–2007 Chevrolet, GMC and 2007 Cadillac engines to restore accurate air-fuel monitoring.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis complete set of four O2 sensors is engineered as a direct-fit replacement for upstream (pre-catalytic) and downstream (post-catalytic) locations on many Chevy, GMC and Cadillac V6 and V8 models from 2006–2007. Built from high-temperature materials and designed to match factory electrical and thread specifications, these sensors provide reliable feedback to your engine control module so the fuel trim and emissions systems operate as intended. Before purchase, verify fitment by comparing your vehicle year, engine displacement and original part numbers against the list of compatible models and replacement numbers.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines will these BLPextrm sensors fit?\u003c\/h3\u003e\n\u003cp\u003eThese sensors cover a range of GM vehicles from model years 2006–2007 with 4.3L, 4.8L, 5.3L, 6.0L and 6.2L engines. They are intended for both upstream and downstream positions across Silverado, Sierra, Avalanche, Suburban, Tahoe, Yukon, Yukon XL and Cadillac Escalade variants listed in the product application. Confirm your engine size and year to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChevy Silverado\/Sierra 1500 (4.3L, 4.8L, 5.3L, Classic body styles noted)\u003c\/li\u003e\n  \u003cli\u003eChevy Avalanche\/Suburban\/Tahoe with specified 2006–2007 engine options\u003c\/li\u003e\n  \u003cli\u003eGMC Sierra\/Yukon\/Yukon XL with listed engine displacements\u003c\/li\u003e\n  \u003cli\u003eCadillac Escalade (6.2L) 2007 models\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these sensors improve engine performance and emissions?\u003c\/h3\u003e\n\u003cp\u003eOxygen sensors measure exhaust oxygen content and send voltage signals to the engine control unit to help regulate fuel delivery. Replacing faulty sensors stabilizes idle, reduces misfires and helps maintain correct fuel economy and emission outputs without altering engine hardware. These BLPextrm units are constructed to withstand high exhaust temperatures for consistent readings over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFaster response time improves air-fuel ratio adjustments\u003c\/li\u003e\n  \u003cli\u003eHigh-temperature materials rated up to 650°C for durability\u003c\/li\u003e\n  \u003cli\u003eRestores accurate downstream catalytic converter monitoring\u003c\/li\u003e\n  \u003cli\u003eAddresses symptoms like rough idle, stalling and poor acceleration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat replacement part numbers and compatibility should I check?\u003c\/h3\u003e\n\u003cp\u003eThe kit replaces a wide range of OEM and aftermarket part numbers; consult the provided replacement list and cross-reference with your existing sensor’s number and connector type. Always match plug style, thread pitch and electrical pins to avoid fitment issues. If in doubt, remove the old sensor and compare it with the numbers shown in the product description.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes cross-reference numbers such as 234-4018, 25161130, 25312196 and others\u003c\/li\u003e\n  \u003cli\u003eVerify your vehicle’s original sensor number before ordering\u003c\/li\u003e\n  \u003cli\u003eCheck connector type and wiring harness compatibility for plug-and-play fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat support and warranty-like help does BLPextrm offer if sensors underperform?\u003c\/h3\u003e\n\u003cp\u003eIf you encounter issues with sensor operation, BLPextrm requests customers to contact support with details so the team can troubleshoot or arrange replacements where appropriate. Prompt communication helps pin down installation or compatibility problems versus product defects. The seller emphasizes customer satisfaction and a commitment to resolving sensor-related concerns.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContact support with vehicle info and symptoms for faster resolution\u003c\/li\u003e\n  \u003cli\u003eProvide part numbers and purchase details when emailing for help\u003c\/li\u003e\n  \u003cli\u003eExpect guidance on troubleshooting, replacement or return steps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This 4-piece BLPextrm oxygen sensor kit is designed for DIY mechanics, independent technicians and fleet maintainers working on mid-2000s GM trucks and SUVs who need a direct-fit, temperature-resistant replacement for both upstream and downstream O2 sensors. It’s suited to anyone replacing worn or failed sensors to restore proper emissions monitoring and engine management—provided you confirm engine size and part number compatibility before ordering.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these sensors fit my 2007 Silverado 5.3L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this kit lists compatibility with 2007 Silverado 5.3L models; confirm by matching your original sensor part number and connector type.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these upstream and downstream sensors included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the four-piece kit supplies both upstream and downstream sensors needed for the specified vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BLPextrm","offers":[{"title":"Default Title","offer_id":48084050083998,"sku":"B09HK81367","price":73.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/blpextrm-front-packaging-oxygen-sensor-kit.jpg?v=1785844787","url":"https:\/\/northtrailauto.ca\/products\/blpextrm-o2-sensor-kit-4pcs-for-2006-07-chevy-gmc-cadillac-upstream-downstream-direct-fit","provider":"North Trail Auto","version":"1.0","type":"link"}