{"product_id":"o2-oxygen-sensor-upstream-downstream-for-bmw-5-series-2008-2010-3-0l","title":"O2 Oxygen Sensor Upstream Downstream for BMW 5 Series (2008-2010) 3.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upstream and Downstream Oxygen Sensor Kit for 2008-2010 BMW 5 Series (E60)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The oxygen sensor kit replaces degraded factory wideband and switching probes on the 2008-2010 5 Series to restore precise closed-loop air-fuel monitoring, eliminate misfire codes, and recover lost fuel economy.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock BMW 5 Series Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eE60\u003c\/strong\u003e platform suffer from gradual contamination and thermal fatigue over extended heat cycles. Exhaust soot, oil vapor blow-by, and silicates contaminate the porous ceramic diffusion layer, causing sluggish voltage response. This sensor lag skews short-term and long-term fuel trims (STFT\/LTFT) managed by the DME, prompting persistent lean\/rich check engine lights, fouled spark plugs, rough idle, and degraded catalytic converter efficiency on high-mileage \u003cstrong\u003eN52\u003c\/strong\u003e and \u003cstrong\u003eN54\u003c\/strong\u003e engines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 4-piece sensor set engineered for the \u003cstrong\u003eE60\u003c\/strong\u003e 3.0L features robust planar zirconia ceramic elements and integrated fast-acting heating circuits to achieve rapid operating temperature light-off. Encased in double-shielded, laser-welded stainless steel housings, these sensors resist thermal shock and external corrosion. Factory-correct multi-pin connectors and pre-loomed harness sleeves allow seamless plug-and-play installation without wire splicing, matching OEM signal response across Bank 1 and Bank 2.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2x Upstream Oxygen Sensors (Pre-Catalytic Converter)\u003c\/li\u003e\n  \u003cli\u003e2x Downstream Oxygen Sensors (Post-Catalytic Converter)\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;\"\u003e2008-2010 BMW 5 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;\"\u003e\n\u003cstrong\u003eN52 \/ N54\u003c\/strong\u003e (3.0L I6) \/ \u003cstrong\u003eE60\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;\"\u003e230–300 hp \/ 200–300 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\u003e2008-2010 BMW 5 Series (E60 Sedan \/ E61 Touring) 3.0L L6 (528i, 528xi, 535i, 535xi)\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 E60 5 Series?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2008-2010 BMW 5 Series equipped with the \u003cstrong\u003eN52\u003c\/strong\u003e or \u003cstrong\u003eN54\u003c\/strong\u003e 3.0L inline-6 engine.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to reset engine adaptations after installation?\u003c\/h4\u003e\n\u003cp\u003eYes, clearing DME fault codes and resetting the lambda air-fuel mixture adaptations via an OBD-II diagnostic tool is strongly recommended to allow the vehicle to calibrate immediately to the new sensors.\u003c\/p\u003e\n\n\u003ch3\u003eThe BMW Precision Standard\u003c\/h3\u003e\n\u003cp\u003eMaintaining tightly calibrated air-fuel ratio control is essential for European performance engines; fresh sensors preserve throttle response, protect expensive catalytic substrates, and ensure clean OBD-II emissions readiness without check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551468585208,"sku":"DS-ESKUJL2I2","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-5-series-2008-2010-3-0l-1.jpg?v=1790796767","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-bmw-5-series-2008-2010-3-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}