{"product_id":"o2-oxygen-sensor-downstream-for-ford-mustang-2011-2014-3-7l-5-0l","title":"O2 Oxygen Sensor Downstream for Ford Mustang (2011-2014) 3.7L, 5.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Downstream O2 Oxygen Sensor Pair for 2011-2014 Ford Mustang (S197)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Downstream Oxygen Sensor Pair monitors post-catalytic exhaust gas chemistry on the 2011-2014 Ford Mustang to verify catalyst efficiency and eliminate catalytic failure trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Mustang Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory downstream oxygen sensors on the \u003cstrong\u003eS197\u003c\/strong\u003e platform endure extreme thermal cycling, exhaust vibration, and continuous exposure to unburned hydrocarbons. Over time, the factory zirconia sensing core suffers from silica contamination and carbon buildup, leading to sluggish voltage transition response. This latency causes the powertrain control module to register false catalytic deficiency faults (such as DTC P0420 and P0430), locking out closed-loop validation and triggering check engine lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-heat durability, these direct-fit sensors incorporate planar ceramic elements and rapid-heating internal circuits that reach closed-loop operating temperatures in seconds. Housed in double-wall, laser-welded stainless steel cases, they resist corrosion, exhaust moisture wash, and thermal shock. Pre-terminated factory-style harness connectors match OEM wiring harness pinouts directly, ensuring clean signal transmission without cutting, splicing, or resistance changes across the sensor circuit.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2x Downstream Oxygen Sensors (Bank 1 and Bank 2, Sensor 2)\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;\"\u003e2011-2014 Ford Mustang\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;\"\u003e3.7L Cyclone V6, 5.0L Coyote V8 \/ \u003cstrong\u003eS197\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;\"\u003e305–420 hp \/ 280–390 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;\"\u003eBE5Z-9G444-A, BE5Z-9G444-B, BE5Z-9G444-C, 234-4490, BA5Z-9G444-A, BA5Z9G444A, BH6Z-9G444-A, BH6Z9G444A, BR3Z-9G444-A, BR3Z9G444A, 2344490\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\u003e2011-2014 Ford Mustang Base \/ Premium (3.7L V6 Cyclone)\u003c\/li\u003e\n  \u003cli\u003e2011-2014 Ford Mustang GT \/ GT Premium (5.0L V8 Coyote)\u003c\/li\u003e\n  \u003cli\u003e2012-2013 Ford Mustang Boss 302 (5.0L V8 Road Runner)\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 S197 Mustang?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2011-2014 Ford Mustang equipped with the \u003cstrong\u003e3.7L Cyclone\u003c\/strong\u003e or \u003cstrong\u003e5.0L Coyote\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit 5.4L or 5.8L supercharged Shelby GT500 models, and does not replace upstream (Sensor 1) wideband air\/fuel sensors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo these sensors require wire splicing or terminal repinning?\u003c\/h4\u003e\n\u003cp\u003eNo, these downstream sensors feature factory-matched pigtails and pre-pinned OEM-style connectors for complete plug-and-play installation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Muscle Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the aggressive thermal exhaust profiles of modern V6 and high-revving V8 platforms, this downstream sensor pair maintains true emissions compliance and engine control stability under hard acceleration.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551450726648,"sku":"DS-EVM4I19KE","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-downstream-for-ford-mustang-2011-2014-3-7l-5-0l-1.jpg?v=1790796494","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-downstream-for-ford-mustang-2011-2014-3-7l-5-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}