{"product_id":"o2-oxygen-sensor-upstream-downstream-for-toyota-tundra-2000-2002-4-7l","title":"O2 Oxygen Sensor Upstream Downstream for Toyota Tundra (2000-2002) 4.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upstream \u0026amp; Downstream Oxygen Sensor Kit for 2000-2002 Toyota Tundra (UCK30)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched 4-piece oxygen sensor kit monitors pre- and post-catalyst exhaust oxygen levels on the \u003cstrong\u003e2000-2002 Toyota Tundra UCK30\u003c\/strong\u003e \u003cstrong\u003e2UZ-FE 4.7L V8\u003c\/strong\u003e (RWD) to regulate closed-loop fueling and catalyst efficiency.\u003c\/p\u003e\u003ch3\u003eThe Stock Toyota Tundra O2 Sensor Failure\u003c\/h3\u003e\u003cp\u003eFactory zirconia sensing elements on the \u003cstrong\u003eUCK30\u003c\/strong\u003e Tundra with the \u003cstrong\u003e2UZ-FE 4.7L V8\u003c\/strong\u003e endure severe thermal cycling over time. Internal heater coils fatigue and open-circuit from repeated heat soak, while carbon soot and oil ash glaze the ceramic tip and slow voltage switching. Once upstream or downstream sensors degrade, the ECU logs heater and circuit faults like \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0155\u003c\/strong\u003e, and \u003cstrong\u003eP0161\u003c\/strong\u003e, forcing rich open-loop fueling.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM Oxygen Sensor\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \/ Heater DTCs:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0155\u003c\/strong\u003e, or \u003cstrong\u003eP0161\u003c\/strong\u003e from open heater circuits or sluggish voltage switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRich Running \u0026amp; Fuel Loss:\u003c\/strong\u003e Slow upstream response forces default fuel enrichment, hurting MPG and fouling plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFailed Emissions \u0026amp; Rough Idle:\u003c\/strong\u003e Delayed closed-loop fueling increases tailpipe hydrocarbons and destabilizes idle trims.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Matched Oxygen Sensor Solution\u003c\/h3\u003e\u003cp\u003eReplacing all four sensors as a matched set restores synchronized Bank 1 and Bank 2 fuel trims on the \u003cstrong\u003e2UZ-FE 4.7L V8\u003c\/strong\u003e. Built as direct-fit replacements for OEM numbers \u003cstrong\u003e234-4154\u003c\/strong\u003e and \u003cstrong\u003e234-4169\u003c\/strong\u003e, these sensors feature factory-length harnesses and locking plugs for splice-free installation. Corrosion-resistant stainless housings withstand underbody exposure, while fast-acting zirconia elements deliver crisp stoichiometric voltage signals to the \u003cstrong\u003eUCK30\u003c\/strong\u003e ECM.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2 Upstream Oxygen Sensors\u003c\/li\u003e\n\u003cli\u003e2 Downstream Oxygen Sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\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;\"\u003e2000-2002 Toyota Tundra (RWD Only)\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;\"\u003e2UZ-FE 4.7L V8 \/ UCK30\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;\"\u003eSensor Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect-Fit Heated Zirconia (Upstream \u0026amp; Downstream)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eInstallation Type\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect Bolt-On OEM Replacement (No Cutting or Welding)\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;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e234-4154, 234-4169\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2000-2002 Toyota Tundra 4.7L Rear-Wheel Drive (RWD) ONLY\u003c\/li\u003e\n\u003cli\u003eNot listed for 4WD models; confirm engine and drivetrain before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the UCK30 Tundra?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2000-2002 Toyota Tundra equipped with the \u003cstrong\u003e2UZ-FE 4.7L V8\u003c\/strong\u003e RWD powertrain. \u003cstrong\u003e4WD models and 3.4L V6 trims are strictly excluded; confirm engine and drivetrain before ordering.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135, P0141, P0155, or P0161 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, if faulty sensors are the cause.\u003c\/strong\u003e Replacing the matched set (\u003cstrong\u003e234-4154\u003c\/strong\u003e \/ \u003cstrong\u003e234-4169\u003c\/strong\u003e) resolves open heater circuits and slow switching, though you should inspect fuses and exhaust leaks first.\u003c\/p\u003e\u003ch4\u003eAre factory connectors included without splicing wires?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Each unit features direct-fit OEM connectors for the \u003cstrong\u003eUCK30\u003c\/strong\u003e harness with zero cutting required; chase the exhaust bung threads clean before torquing.\u003c\/p\u003e\u003ch3\u003eThe Toyota Heavy-Duty Standard\u003c\/h3\u003e\u003cp\u003eEngineered for towing heat loads and high-mileage durability, matched O2 sensor replacement keeps your \u003cstrong\u003e2UZ-FE 4.7L V8\u003c\/strong\u003e at peak stoichiometric efficiency. Maintain clean emissions compliance and reliable fuel trims on your \u003cstrong\u003eUCK30\u003c\/strong\u003e Tundra.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68115585171704,"sku":"DS-E6X1EU7XH","price":86.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-toyota-tundra-2000-2002-4-7l-1.jpg?v=1794706346","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-toyota-tundra-2000-2002-4-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}