{"product_id":"oxygen-sensors-for-nissan-frontier-pathfinder-xterra-2005-2006-4-0l-upstream-downstream","title":"Oxygen Sensors for Nissan Frontier Pathfinder Xterra (2005-2006) 4.0L Upstream \u0026 Downstream","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor Set for 2005-2006 Nissan Frontier, Pathfinder, Xterra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 4-piece Oxygen Sensor Kit replaces degraded factory air-fuel ratio and downstream sensors on the 2005-2006 Nissan Frontier, Pathfinder, and Xterra to restore precise closed-loop fuel trims, optimize combustion efficiency, and resolve catalyst diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Frontier, Pathfinder, Xterra Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory zirconia elements on the \u003cstrong\u003eVQ40DE\u003c\/strong\u003e engine suffer from thermal fatigue and siloxane or carbon poisoning over extended duty cycles. As internal ceramic heater circuits degrade and porous platinum electrodes become fouled by combustion blow-by, response times slow dramatically. This leads to inaccurate feedback to the ECM, causing sluggish closed-loop switching, rich-running conditions, compromised catalytic converter lifespan, failed emissions inspections, and persistent diagnostic trouble codes such as P0420, P0430, P0130, or P0150.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 4-piece oxygen sensor kit restores immediate closed-loop telemetry across Bank 1 and Bank 2. Engineered with planar ceramic sensing elements and integrated rapid-light-off heaters, each sensor reaches operating temperature in seconds to minimize cold-start emissions. The assemblies feature dual-layer 304 stainless steel protective shields to resist exhaust thermal shock, factory-pinned color-coded terminal connectors (green, blue, and black) for foolproof plug-and-play installation without wire splicing, and high-temperature cross-linked polyethylene wiring harness insulation that repels oil, road debris, and chassis heat soak.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\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;\"\u003e2005-2006 Nissan Frontier, Pathfinder, Xterra\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\u003eVQ40DE\u003c\/strong\u003e \/ \u003cstrong\u003eD40\u003c\/strong\u003e, \u003cstrong\u003eR51\u003c\/strong\u003e, \u003cstrong\u003eN50\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;\"\u003e261-270 hp \/ 281-291 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;\"\u003e22690-EA200, 22691-EA200, 226A0-EA200, 226A1-EA200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2005-2006 Nissan Frontier 4.0L V6 (D40 Platform)\u003c\/li\u003e\n  \u003cli\u003e2005-2006 Nissan Pathfinder 4.0L V6 (R51 Platform)\u003c\/li\u003e\n  \u003cli\u003e2005-2006 Nissan Xterra 4.0L V6 (N50 Platform)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the D40, R51, and N50 Frontier, Pathfinder, and Xterra?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2005-2006 Nissan Frontier, Pathfinder, and Xterra equipped with the \u003cstrong\u003eVQ40DE\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to flash the ECM after installing these sensors?\u003c\/strong\u003e\u003cbr\u003e No calibration flash is required, but you must clear stored diagnostic trouble codes and allow the ECM to complete a drive-cycle relearn for fuel trims.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan Truck Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand heavy payload demands, extreme off-road vibrations, and high-heat towing conditions, these direct-fit sensors keep your Nissan truck's powertrain operating with factory-grade reliability under any workload.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511102935288,"sku":"DS-EXH9W1QL0","price":111.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-nissan-frontier-pathfinder-xterra-2005-2006-4-0l-upstream-downstream-1.jpg?v=1789410175","url":"https:\/\/performancechiptuning.com\/es\/products\/oxygen-sensors-for-nissan-frontier-pathfinder-xterra-2005-2006-4-0l-upstream-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}