{"product_id":"oxygen-sensors-for-toyota-rav4-1998-2000-2-0l-upstream-downstream","title":"Oxygen Sensors for Toyota RAV4 (1998-2000) 2.0L Upstream \u0026 Downstream","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor Replacement Kit for 1998-2000 Toyota RAV4\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upstream \u0026amp; Downstream Oxygen Sensor Kit replaces degraded factory zirconia sensors on the 1998-2000 RAV4 to restore real-time closed-loop air-fuel metering, smooth idle parameters, and clean tailpipe emissions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Toyota RAV4 Sensor Contamination and Thermal Degradation\u003c\/h3\u003e\n\u003cp\u003eAging \u003cstrong\u003eXA10\u003c\/strong\u003e platform vehicles run the venerable \u003cstrong\u003e3S-FE\u003c\/strong\u003e power plant, which frequently subjects exhaust probes to severe thermal cycling and blow-by carbon glazing over decades of operation. Factory oxygen sensors suffer from internal ceramic thimble cracking, silica poisoning, and depleted platinum electrodes. This degradation slows sensor millivolt transition times, locking the powertrain control module (PCM) into false lean conditions. The result is unmetered rich fueling, degraded fuel economy, catalytic converter overheating, hesitation on throttle tip-in, and persistent diagnostic trouble codes like P0130, P0133, or P0136.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 2-piece sensor set engineered for the \u003cstrong\u003e3S-FE\u003c\/strong\u003e features high-grade, fast-acting planar zirconia ceramic elements encased in laser-welded 304 stainless steel protective shields. Dual internal filter membranes prevent airborne hydrocarbon and moisture contamination while maintaining atmospheric reference air integrity. High-temperature fluoropolymer-insulated wiring harnesses with OEM-spec pinout weatherproof connectors eliminate voltage drop and signal noise. Precise internal heater circuits shorten cold-start light-off cycles, restoring rapid closed-loop stoich control (14.7:1 AFR) and protecting catalytic efficiency.\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;\"\u003e1998-2000 Toyota RAV4\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;\"\u003e3S-FE \/ XA10\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;\"\u003e127 hp \/ 132 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;\"\u003e89465-49055, 89465-42030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1998 Toyota RAV4 Base 2.0L L4 - Gas (XA10, 3S-FE)\u003c\/li\u003e\n  \u003cli\u003e1999 Toyota RAV4 Base 2.0L L4 - Gas (XA10, 3S-FE)\u003c\/li\u003e\n  \u003cli\u003e2000 Toyota RAV4 Base 2.0L L4 - Gas (XA10, 3S-FE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the XA10 RAV4?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1998-2000 Toyota RAV4 equipped with the 3S-FE engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these sensors require wire splicing or custom pin pinning?\u003c\/strong\u003e\u003cbr\u003e No, both upstream and downstream sensors feature direct-fit factory pigtails that plug straight into the OEM engine harness.\u003c\/p\u003e\n\n\u003ch3\u003eThe Toyota JDM Reliability Benchmark\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle harsh exhaust pulses and high-mileage road duty, these direct-replacement sensors preserve the bulletproof longevity and clean-burning reliability that define classic Japanese engineering.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511210086648,"sku":"DS-EEG4SP0W4","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-toyota-rav4-1998-2000-2-0l-upstream-downstream-1.jpg?v=1789411333","url":"https:\/\/performancechiptuning.com\/fr\/products\/oxygen-sensors-for-toyota-rav4-1998-2000-2-0l-upstream-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}