{"product_id":"12659516-car-upstream-air-fuel-ratio-lambda-o2-oxygen-sensor-for-gmc-sierra-yukon-cadillac-escalade-esv-chevy-silverado-tahoe","title":"Oxygen Sensor Upstream Lambda O2 Front Probe for GMC Sierra","description":"\u003cdiv\u003e\n\u003ch2\u003eMain Description\u003c\/h2\u003e\n\u003cp\u003eMeet the Oxygen Sensor Upstream Lambda O2 Front Probe—a precise, drop‑in replacement designed for GMC Sierra and a wide range of GM vehicles. This upstream oxygen sensor helps monitor the air–fuel ratio, delivering accurate lambda readings to your engine computer. By ensuring the proper oxygen sensor data, it supports efficient combustion, steadier idle, and better overall emissions performance.\u003c\/p\u003e\n\u003cp\u003eBuilt to fit a variety of GM models, including GMC, Chevrolet, Cadillac, and Yukon\/Yukon XL series, this sensor aligns with OEM specifications for reliable, long‑lasting operation. It’s a direct replacement for the upstream\/front sensor position and is compatible with engines such as 5.3L V8, 4.3L V6, and 6.2L V8 across multiple years.\u003c\/p\u003e\n\u003cp\u003eWith a compact, robust design from IWOKPHD, this part is crafted to withstand the rigors of daily driving, helping your vehicle maintain optimal fuel economy and performance while staying within emissions guidelines.\u003c\/p\u003e\n\u003cp\u003eAll electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.\u003c\/p\u003e\n\u003cp\u003eAt intercyprus.com since 2002 — trusted for quality and reliability.\u003c\/p\u003e \u003ch3\u003eBenefits \u0026amp; Tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDirect upstream\/front O2 sensor replacement for GMC Sierra 1500 (2014–2016) with 5.3L V8, 4.3L V6, or 6.2L V8 engines, plus compatible GM models listed in the fitment details.\u003c\/li\u003e \u003cli\u003eSupports correct air–fuel ratio readings to improve engine performance, throttle response, and emissions performance.\u003c\/li\u003e \u003cli\u003eInstall in the upstream position as specified for most models; note that a few listed variants use Upstream Left on certain Yukon\/Yukon XL configurations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBrand: IWOKPHD\u003c\/li\u003e \u003cli\u003eSensor Type: Piezoelectric\u003c\/li\u003e \u003cli\u003ePosition: Upstream (Front); some variants listed as Upstream Left for certain models\u003c\/li\u003e \u003cli\u003eOEM No.: 12659516\u003c\/li\u003e \u003cli\u003ePart Numbers: 234-4940, 2344940, 234 4940, 12659516\u003c\/li\u003e \u003cli\u003eOrigin: Mainland China\u003c\/li\u003e \u003cli\u003eMeasuring Range: Upstream Lambda O2 Oxygen Sensor (specific range data not provided)\u003c\/li\u003e \u003cli\u003eCompatibility\/Fitment (selected vehicles):\u003c\/li\u003e \u003cul\u003e \u003cli\u003eGMC Sierra 1500 (2014–2016) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Sierra 1500 (2014–2016) 4.3L V6 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Sierra 1500 (2014–2016) 6.2L V8 — Upstream\u003c\/li\u003e \u003cli\u003eCadillac Escalade (2015–2017) 6.2L V8 — Upstream\u003c\/li\u003e \u003cli\u003eCadillac Escalade ESV (2015–2017) 6.2L V8 — Upstream\u003c\/li\u003e \u003cli\u003eChevrolet Silverado 1500 (2014–2016) 6.2L V8 — Upstream\u003c\/li\u003e \u003cli\u003eChevrolet Silverado 1500 (2014–2016) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eChevrolet Silverado 1500 (2014–2016) 4.3L V6 — Upstream\u003c\/li\u003e \u003cli\u003eChevrolet Suburban (2015) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eChevrolet Suburban (2016) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eChevrolet Tahoe (2015–2016) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Yukon (2015) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Yukon (2015) 6.2L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Yukon (2016) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Yukon (2016) 6.2L V8 FLEX — Upstream Left\u003c\/li\u003e \u003cli\u003eGMC Yukon XL (2015) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Yukon XL (2015) 6.2L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Yukon XL (2016) 5.3L V8 — Upstream\u003c\/li\u003e \u003cli\u003eGMC Yukon XL (2016) 6.2L V8 FLEX — Upstream Left\u003c\/li\u003e \u003c\/ul\u003e\n\u003c\/ul\u003e \u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e1 x Oxygen Sensor Upstream Lambda O2 Front Probe\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWarnings \/ Reminders\u003c\/h3\u003e\n\u003cp\u003ePlease verify compatibility with your exact year\/model before purchase. If you are unsure, contact support for confirmation. Professional installation is recommended to ensure proper fitment and electrical connection.\u003c\/p\u003e \u003cp\u003eAll electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.\u003c\/p\u003e\n\u003cp\u003eProviding quality and trusted service since 2002 at intercyprus.com\u003c\/p\u003e\n\u003c\/div\u003e","brand":"InterCyprus Trading Ltd","offers":[{"title":"Default Title","offer_id":53999779152214,"sku":"1005012108472332-Default Title","price":45.59,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0530\/0604\/1274\/files\/Sb184fc7b0d0a45e7bffe46b6417e3ee2B.webp?v=1779820793","url":"https:\/\/www.intercyprus.com\/products\/12659516-car-upstream-air-fuel-ratio-lambda-o2-oxygen-sensor-for-gmc-sierra-yukon-cadillac-escalade-esv-chevy-silverado-tahoe","provider":"InterCyprus Trading Ltd","version":"1.0","type":"link"}