{"product_id":"maxfavor-upstream-o2-oxygen-sensor-pair-for-2003-2015-gm-vehicles-direct-fit-pigtail-harness","title":"Maxfavor Upstream O2 Oxygen Sensor Pair for 2003–2015 GM Vehicles — Direct-Fit, Pigtail Harness","description":"\u003cp\u003e\u003cstrong\u003eMaxfavor 234-4668×2 is a pair of upstream O2 oxygen sensors engineered as direct-fit replacements for many 2003–2015 GM vehicles, restoring accurate air-fuel monitoring for the engine control system.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis pair of upstream oxygen sensors is designed to match factory fitment and electrical connections for a wide range of Chevrolet, GMC, Buick, Cadillac, Pontiac and Saturn models. Each sensor includes the compatible interchange numbers and a flexible pigtail harness so swap-in installation is straightforward for mechanics and experienced DIYers. The kit arrives with a one-year unlimited-miles warranty and basic installation guidance to help ensure a correct and lasting fit.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engine locations will these sensors fit?\u003c\/h3\u003e\n\u003cp\u003eThese Maxfavor oxygen sensors are intended primarily for upstream positions (pre-catalytic converter) on many GM models from the 2003–2015 model years. Fitment covers light trucks, sedans and SUVs across Chevrolet, GMC, Buick, Cadillac, Pontiac and Saturn lineups. Always verify compatibility with your vehicle’s year, make and engine code before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon Chevy fits: Silverado 1500\/2500\/3500, Tahoe, Suburban, Avalanche, Impala, Malibu\u003c\/li\u003e\n  \u003cli\u003eGMC fits: Sierra 1500\/2500\/3500, Yukon\/Yukon XL, Acadia, Envoy\u003c\/li\u003e\n  \u003cli\u003eOther makes: Buick Enclave, Cadillac Escalade\/CTS, Pontiac G6\/G8, Saturn Aura\/Vue\u003c\/li\u003e\n  \u003cli\u003eCheck listed interchange numbers (e.g., 234-4668, 250-24470) against your OEM part\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install the Maxfavor upstream O2 sensor pair?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a straightforward mechanical swap when you have the right tools and precautions. Remove the old sensor with a proper O2 socket, compare the new sensor for identical connectors and thread size, and clean the threaded port before installing the replacement to ensure a good seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStep 1: Locate and remove the old upstream O2 sensor using an oxygen sensor socket\u003c\/li\u003e\n  \u003cli\u003eStep 2: Compare connectors and thread pattern to confirm match\u003c\/li\u003e\n  \u003cli\u003eStep 3: Clean the sensor port threads and gently hand-start new sensor\u003c\/li\u003e\n  \u003cli\u003eStep 4: Torque to manufacturer spec and reconnect the electrical plug; clear any trouble codes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat interchange numbers and part references should I check?\u003c\/h3\u003e\n\u003cp\u003eMaxfavor provides several common OEM and aftermarket interchange numbers so you can cross-reference your existing part. Use those reference numbers to confirm fitment on parts lookup sites or service manuals before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded interchange numbers: 234-4668, 250-24470, 12569429, 12573005\u003c\/li\u003e\n  \u003cli\u003eAdditional references: 12573167, 12576131, 12583290, 12607410 and others\u003c\/li\u003e\n  \u003cli\u003eCompare the sensor’s plug, wire length and thread pitch to your factory unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and support come with this O2 sensor set?\u003c\/h3\u003e\n\u003cp\u003eMaxfavor backs this pair with a one-year unlimited-miles warranty and accepts returns if the sensors don’t fit your vehicle. The seller also offers customer support and asks buyers to compare pictures and vehicle fitment closely before installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1-year unlimited-miles warranty included\u003c\/li\u003e\n  \u003cli\u003eReturn accepted if the sensor doesn’t match your vehicle (clean, packaged condition required)\u003c\/li\u003e\n  \u003cli\u003eCustomer support promise: respond to inquiries within 24 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Maxfavor 234-4668×2 upstream oxygen sensor pair is intended for vehicle owners, independent mechanics and repair shops replacing faulty upstream O2 sensors on compatible GM vehicles. It’s suitable for buyers who need a cost-effective, direct-fit replacement with clear interchange references, straightforward installation steps and a one-year warranty. If you are unsure about fitment, compare your old sensor to the provided part numbers and photos or consult a technician 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: Are these sensors direct replacements for my 2008 Silverado?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Possibly; compare your current sensor’s part number and connector to the listed interchange numbers and photos before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What warranty covers the Maxfavor O2 sensors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They include a 1-year unlimited-miles warranty and accept returns if the part doesn’t fit your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Maxfavor","offers":[{"title":"Default Title","offer_id":48084852670622,"sku":"B07KW3WQZT","price":39.94,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/maxfavor-front-packaging-sensors.jpg?v=1785863854","url":"https:\/\/northtrailauto.ca\/products\/maxfavor-upstream-o2-oxygen-sensor-pair-for-2003-2015-gm-vehicles-direct-fit-pigtail-harness","provider":"North Trail Auto","version":"1.0","type":"link"}