{"product_id":"denso-o2-oxygen-sensor-234-4622-4-wire-12-6-harness-direct-fit-for-lexus-toyota-pontiac","title":"Denso O2 Oxygen Sensor 234-4622 — 4-Wire 12.6\" Harness, Direct-Fit for Lexus\/Toyota\/Pontiac","description":"\u003cstrong\u003eThe Denso 234-4622 is a direct-replacement narrow-band oxygen (O2) sensor with a 4-wire, 12.60-inch harness designed to restore accurate air-fuel monitoring on compatible Lexus, Toyota and Pontiac models.\u003c\/strong\u003e\n\n\u003cp\u003eThis replacement sensor is engineered to meet original-equipment tolerances so it installs cleanly and performs reliably. Built with corrosion-resistant stainless steel, a refined zirconia sensing element and Denso’s aluminum oxide trap layer, it resists contamination and responds quickly to changes in exhaust oxygen levels. The 234-4622 fits a wide range of vehicles — including select Lexus ES300\/ES300h and NX models, Pontiac Vibe, and many Toyota sedans, SUVs and coupes — making it a practical choice for routine maintenance or targeted repairs.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and part numbers does this sensor replace?\u003c\/h3\u003e\n\u003cp\u003eThe Denso 234-4622 is listed for many Lexus, Toyota and Pontiac applications across different years. It also cross-references several factory part numbers and aftermarket interchange codes for easy verification before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExact Denso part: 234-4622\u003c\/li\u003e\n  \u003cli\u003eCompatible models include Lexus ES300 (1995–1998), ES300h (2013–2018), NX200t\/NX300\/NX300h (various years), Pontiac Vibe (2009–2010), Toyota Camry, Corolla, RAV4, Avalon, 4Runner, Matrix, Sienna, Solara, Paseo and Tercel across listed years.\u003c\/li\u003e\n  \u003cli\u003eParts interchange examples: 88975496, 8946502340, 8946533450 and other OEM cross-reference numbers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this Denso sensor protect the engine and improve drivability?\u003c\/h3\u003e\n\u003cp\u003eWhile it’s not a fix-all, a functioning oxygen sensor helps the engine control unit (ECU read) maintain correct air-fuel ratios, which supports smoother idle and consistent performance. Denso’s construction and filter features reduce the chance of sensor poisoning so it keeps accuracy longer than untreated elements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum oxide trap layer guards the ceramic element from silicone and lead contamination.\u003c\/li\u003e\n  \u003cli\u003ePTFE filtering helps block particles that can degrade sensor response.\u003c\/li\u003e\n  \u003cli\u003eRefined zirconia element yields faster, more precise oxygen readings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the 234-4622 easy to install and what are its physical details?\u003c\/h3\u003e\n\u003cp\u003eThis part is made as a direct fit replacement with a 4-wire harness and a 12.60-inch lead so it lines up with factory connectors in the specified vehicles. The sensor’s compact dimensions and stainless steel housing simplify installation and help it withstand the under-hood environment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWiring: 4-wire harness, 12.60 inches long for OEM connector compatibility.\u003c\/li\u003e\n  \u003cli\u003eConstruction: corrosion-resistant stainless steel housing for durability.\u003c\/li\u003e\n  \u003cli\u003eDimensions \u0026amp; weight: approx. 5.75 x 2.19 x 1.88 inches, 0.25 lb; sold individually.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen should I replace an oxygen sensor and what performance changes should I expect?\u003c\/h3\u003e\n\u003cp\u003eReplace a sensor if the vehicle shows a persistent check engine light tied to O2 sensor codes, rough idle, or if fuel economy noticeably worsens. Installing a correct, well-built replacement like the 234-4622 helps restore accurate oxygen monitoring and stabilize fuel trim adjustments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon replacement triggers: diagnostic trouble codes, poor fuel economy, rough running or failed emissions tests.\u003c\/li\u003e\n  \u003cli\u003eExpected improvements: steadier idle, more consistent combustion control, and more reliable emission readings for diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Automotive technicians, DIY mechanics and fleet managers who need a dependable, OE-quality narrow-band oxygen sensor for select Lexus, Toyota and Pontiac vehicles. If you require a precise fit, OEM cross-reference compatibility and contamination protection in a long-lasting sensor, the Denso 234-4622 is built for routine maintenance and targeted repairs where OEM-level performance is expected.\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: Will the 234-4622 fit my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check the listed year\/make\/model compatibility and OEM cross-reference numbers; match your vehicle’s original part number to confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this sensor require programming?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No programming is needed—this is a direct-fit replacement with a factory-style 4-wire harness for plug-and-play installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":67586560852153,"sku":"B000C5SGA4","price":145.22,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/denso-234-4622-front-view.jpg?v=1790487042","url":"https:\/\/redleafauto.ca\/products\/denso-o2-oxygen-sensor-234-4622-4-wire-12-6-harness-direct-fit-for-lexus-toyota-pontiac","provider":"Redleaf Auto","version":"1.0","type":"link"}