{"product_id":"oxygen-sensors-for-hyundai-santa-fe-2003-2006-3-5l-downstream","title":"Oxygen Sensors for Hyundai Santa Fe (2003-2006) 3.5L Downstream","description":"\u003ch2\u003eDirect-Fit Replacement Downstream Oxygen Sensor for 2003-2006 Hyundai Santa Fe\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Downstream Oxygen Sensor monitors post-catalytic exhaust gases on the 2003-2006 Hyundai Santa Fe to ensure accurate emissions compliance and verify catalyst efficiency for the powertrain control module.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Hyundai Santa Fe Catalyst Monitoring Degradation\u003c\/h3\u003e\n\u003cp\u003eOn the first-generation \u003cstrong\u003eSM\u003c\/strong\u003e platform, the factory downstream O2 sensors endure intense thermal cycling and continuous exposure to harsh exhaust bypass gases. Over time, the factory zirconia sensing element suffers from carbon contamination, silicone poisoning, and thermal fatigue. In the 3.5L \u003cstrong\u003eSigma G6CU\u003c\/strong\u003e V6, degraded downstream sensors result in sluggish response times, erratic voltage switching, false catalytic converter efficiency diagnostic trouble codes (such as P0420 or P0430), and irregular secondary fuel trim corrections.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit replacement sensor is engineered to restore factory-grade exhaust feedback. Built with a high-grade planar ceramic element and double-layered 304 stainless steel protective housing, it resists particulate contamination and thermal shock. The integrated rapid-heating internal resistor circuit brings the sensor to operating temperature quickly, reducing cold-start emissions loops. Featuring pre-crimped OEM-style weatherproof terminal pins, OE-grade wiring harnesses, and precision-cut threads, it provides seamless signal transmission without wire splicing or ECU signal noise.\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;\"\u003e2003-2006 Hyundai Santa Fe Downstream\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;\"\u003e3.5L Sigma G6CU \/ SM Chassis\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;\"\u003e195 hp \/ 219 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;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 Hyundai Santa Fe 3.5L V6 (Downstream)\u003c\/li\u003e\n  \u003cli\u003e2004 Hyundai Santa Fe 3.5L V6 (Downstream)\u003c\/li\u003e\n  \u003cli\u003e2005 Hyundai Santa Fe 3.5L V6 (Downstream)\u003c\/li\u003e\n  \u003cli\u003e2006 Hyundai Santa Fe 3.5L V6 (Downstream)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the SM Santa Fe?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2003-2006 Hyundai Santa Fe equipped with the 3.5L \u003cstrong\u003eSigma G6CU\u003c\/strong\u003e engine in the downstream position.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this sensor clear a P0420 or P0430 DTC?\u003c\/strong\u003e\u003cbr\u003e It will clear downstream sensor circuit codes and resolve false catalyst efficiency codes caused by worn or slow-switching OEM sensors.\u003c\/p\u003e\n\n\u003ch3\u003eThe Hyundai Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eMaintain consistent OBD-II monitoring and clean tailpipe emissions on your daily-driven SUV with sensors constructed to endure severe operating heat without premature thermal breakdown.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511726280952,"sku":"DS-EHHBBLP09","price":64.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-hyundai-santa-fe-2003-2006-3-5l-downstream-1.jpg?v=1789418569","url":"https:\/\/performancechiptuning.com\/products\/oxygen-sensors-for-hyundai-santa-fe-2003-2006-3-5l-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}