{"product_id":"oxygen-sensors-for-toyota-tacoma-2005-2008-4-0l-upstream-downstream","title":"Oxygen Sensors for Toyota Tacoma (2005-2008) 4.0L Upstream \u0026 Downstream","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Complete Oxygen Sensor Kit for 2005-2008 Toyota Tacoma (N200)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete 4-piece oxygen sensor kit replaces degraded factory upstream and downstream sensors on the 2005-2008 Toyota Tacoma to restore precise closed-loop fuel trims and eliminate diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Toyota Tacoma Exhaust Gas Sensing Degradation\u003c\/h3\u003e\n\u003cp\u003eOver extended operating cycles, factory zirconia oxygen and wideband air-fuel ratio sensors in the \u003cstrong\u003e1GR-FE\u003c\/strong\u003e exhaust stream suffer from thermal fatigue, silicone contamination, and soot accumulation. As internal platinum electrodes degrade, sensor latency increases, shifting engine feedback loops rich or lean. This thermal aging leads to sluggish stoichiometric corrections, unmetered over-fueling, rough idle, failed smog inspections, and persistent DTCs such as \u003cstrong\u003eP0130\u003c\/strong\u003e through \u003cstrong\u003eP0161\u003c\/strong\u003e or false catalytic degradation codes like \u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to exact OEM specifications, this complete set features planar ceramic elements with integrated heaters for rapid light-off and stable closed-loop transition. Dual-layer laser-welded stainless steel bodies shield internal sensing ceramics from thermal shock and high exhaust velocities. Factory-length, high-temperature wire harnesses and pre-pinned OEM weather-pack connectors eliminate wire splicing, maintaining factory signal resistance without voltage drop across both cylinder banks.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 x Upstream Air-Fuel Ratio (Oxygen) Sensors\u003c\/li\u003e\n  \u003cli\u003e2 x Downstream Oxygen Sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2005-2008 Toyota Tacoma\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e1GR-FE\u003c\/strong\u003e (4.0L V6) \/ \u003cstrong\u003eN200\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e236 hp \/ 266 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e234-9026\u003c\/strong\u003e, \u003cstrong\u003e234-4260\u003c\/strong\u003e, \u003cstrong\u003e89465-04300\u003c\/strong\u003e, \u003cstrong\u003e89465-04320\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2005-2008 Toyota Tacoma 4.0L V6 (All Trims: Base, PreRunner, X-Runner)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the N200 Tacoma?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2005-2008 Toyota Tacoma equipped with the \u003cstrong\u003e1GR-FE\u003c\/strong\u003e 4.0L V6 engine.\u003c\/p\u003e\n\n\u003ch4\u003eShould anti-seize be applied during installation?\u003c\/h4\u003e\n\u003cp\u003eApply anti-seize exclusively to the outer threads, ensuring compound does not touch the perforated sensor tip or contaminate the ceramic element.\u003c\/p\u003e\n\n\u003ch3\u003eThe Toyota Caliber\u003c\/h3\u003e\n\u003cp\u003eMaintain critical towing reliability and long-distance payload efficiency by keeping stoichiometric fuel control precise across all duty cycles and extreme thermal swings.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67895994155256,"sku":"DS-EIME1AFHN","price":120.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-toyota-tacoma-2005-2008-4-0l-upstream-downstream-1.jpg?v=1793290586","url":"https:\/\/performancechiptuning.com\/products\/oxygen-sensors-for-toyota-tacoma-2005-2008-4-0l-upstream-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}