{"product_id":"o2-oxygen-sensor-upstream-downstream-for-bmw-3-series-2007-2013-3-0l","title":"O2 Oxygen Sensor Upstream Downstream for BMW 3 Series (2007-2013) 3.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Oxygen Sensor Kit for 2007-2013 BMW 3 Series (E90 \/ E92)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete upstream and downstream O2 sensor kit monitors exhaust gas oxygen content across both cylinder banks on the 2007-2013 BMW 3 Series to maintain stoichiometric fuel trims and eliminate Check Engine Lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock BMW 3 Series Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory lambda sensors on \u003cstrong\u003eE90\u003c\/strong\u003e, \u003cstrong\u003eE91\u003c\/strong\u003e, \u003cstrong\u003eE92\u003c\/strong\u003e, and \u003cstrong\u003eE93\u003c\/strong\u003e chassis degrade significantly over 80,000 to 100,000 miles. Sustained exposure to high exhaust gas temperatures, oil vapor, and carbon deposits contaminates the internal porous ceramic element. This leads to lazy signal response, incorrect fuel adaptation trims in the \u003cstrong\u003eN52\u003c\/strong\u003e and \u003cstrong\u003eN54\u003c\/strong\u003e engine management systems, reduced fuel economy, catalytic converter overheating, and persistent DTC fault codes like 2C31 or 2C32.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to exact OEM operational tolerances, these replacement sensors feature robust 310S stainless steel outer shells, fast-acting internal ceramic heater circuits, and dual-layer protective shielding. The pre-greased, anti-seize coated threads and direct-fit weather-pack harness connectors eliminate the need for wire splicing or terminal repinning, delivering stable micro-voltage signals to the DME to optimize closed-loop combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2x Upstream Oxygen Sensors\u003c\/li\u003e\n  \u003cli\u003e2x 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;\"\u003e2007-2013 BMW 3 Series\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;\"\u003eN52 \/ N54 \/ N55 3.0L \/ E90, E91, E92, E93\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;\"\u003e230 hp \/ 200 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;\"\u003e234-4875, 234-4876, 234-4892, 234-5091, 234-5096, 234-5107, 234-5138, 234-5139, 2345091, 2344875, 2344876, 2344892, 2345096, 2345107, 2345138, 2345139\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\u003e2007-2013 BMW 328i \/ 328xi 3.0L (E90 \/ E91 \/ E92 \/ E93)\u003c\/li\u003e\n  \u003cli\u003e2007-2013 BMW 335i \/ 335xi \/ 335is 3.0L (E90 \/ E92 \/ E93)\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 E90 3 Series?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2013 BMW 3 Series equipped with the \u003cstrong\u003e3.0L\u003c\/strong\u003e inline-six engine (confirm your specific production split and sub-model wiring length before purchase).\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to reset adaptations after installation?\u003c\/h4\u003e\n\u003cp\u003eClearing stored trouble codes and executing an adaptation reset via an OBD-II diagnostic scan tool is strongly recommended to recalibrate the DME closed-loop AFR values immediately.\u003c\/p\u003e\n\n\u003ch3\u003eThe BMW Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEuro direct-injection and Valvetronic engines require tight sensor feedback parameters to maintain proper stoichiometry, prevent catalyst glaze, and ensure completely CEL-free daily driving.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551465799928,"sku":"DS-ETRPE0A3I","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-bmw-3-series-2007-2013-3-0l-1.jpg?v=1790796728","url":"https:\/\/performancechiptuning.com\/de\/products\/o2-oxygen-sensor-upstream-downstream-for-bmw-3-series-2007-2013-3-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}