{"product":{"id":11142672810326,"title":"Nostrum BMW F-Series Flex Fuel Ethanol Sensor Kit","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThis is the sensing hardware half of a BMW flex fuel setup: an ethanol sensor pre-mounted on its bracket, plus the adapter lines that let it splice into the factory F-Series fuel line without cutting anything. Fit it and the car can be run on full E85, full super unleaded, or any blend of the two, because the sensor reads the actual ethanol percentage coming from the tank and reports it onwards. The one thing to be clear about before ordering is that Nostrum states plainly that this sensor on its own will not let you tune for flex fuel. It has to report to an ethanol content analyser, and that part is a separate purchase.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eF-Series owners who already run an ethanol content analyser and just need the BMW-specific sensor and plumbing to feed it.\u003c\/li\u003e\n\u003cli\u003eCars mixing E85 and pump fuel at every fill, where guessing the blend is no longer good enough for the tune.\u003c\/li\u003e\n\u003cli\u003eBuilds adding upgraded pumps or injectors where the tuner has asked for live ethanol content before signing off a map.\u003c\/li\u003e\n\u003cli\u003eAnyone assembling a flex fuel setup piece by piece around a Fuel-It or Zeitronix unit they already own.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSensor Kit Or Full ESSIM Kit?\u003c\/h2\u003e\u003cp\u003eThe two BMW kits look similar and are easy to confuse. This one is the sensor and lines only. The \u003ca href=\"\/products\/nostrum-bmw-f-series-essim-kit\"\u003eF-Series ESSIM kit\u003c\/a\u003e is the complete package: it adds Nostrum's ESSIM module, the wiring harness adapters and the analog, PWM and CAN outputs that let the ECU or a tuning platform actually use the reading. Buy this kit if the analyser is already in place. Buy the ESSIM kit if you are starting from nothing.\u003c\/p\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Nostrum High Performance\u003c\/li\u003e\n\u003cli\u003eProduct Type: flex fuel ethanol sensor kit\u003c\/li\u003e\n\u003cli\u003eSKU: L081-1109\u003c\/li\u003e\n\u003cli\u003eVehicle Application: BMW F-Series, 2011-2019\u003c\/li\u003e\n\u003cli\u003eIncluded: ethanol sensor pre-mounted on a bracket, adapter lines for the factory fuel line\u003c\/li\u003e\n\u003cli\u003eExclusions: no ethanol content analyser, module or gauge is supplied\u003c\/li\u003e\n\u003cli\u003eCompatible analysers: Nostrum ESSIM, Fuel-It Bluetooth, Zeitronix ECA-2 CANBus\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eCheck your chassis code against the fitment table below, then decide which analyser the sensor will report to, because the choice affects how the reading reaches the ECU. Zeitronix's ECA-2 CANBus route is the one Nostrum names for feeding the factory ECU. Plan a mounting position where the sensor and its bracket sit clear of heat and moving parts, and remember the tune itself still has to be written around flex fuel.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eNostrum High Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFlex fuel ethanol sensor kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eL081-1109\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eBMW F-Series, 2011-2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded items\u003c\/td\u003e\n\u003ctd\u003eEthanol sensor on mounting bracket, factory fuel line adapter lines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContent analyser\u003c\/td\u003e\n\u003ctd\u003eRequired, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment type\u003c\/td\u003e\n\u003ctd\u003eVehicle-specific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e235i, M235i\u003c\/td\u003e\n\u003ctd\u003eF22\/F23\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e335i\u003c\/td\u003e\n\u003ctd\u003eF30\/F31\/F34\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e435i\u003c\/td\u003e\n\u003ctd\u003eF32\/F33\/F36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e535i\u003c\/td\u003e\n\u003ctd\u003eF07\/F10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e640i\u003c\/td\u003e\n\u003ctd\u003eF06\/F12\/F13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e740i, 740Li\u003c\/td\u003e\n\u003ctd\u003eF01\/F02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003eF82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan I tune for flex fuel with just this kit?\u003c\/h3\u003e\u003cp\u003eNo. Nostrum is explicit that the sensor alone will not allow flex fuel tuning. It needs an ethanol content analyser to read it, such as the Nostrum ESSIM, a Fuel-It Bluetooth unit or a Zeitronix ECA-2 CANBus.\u003c\/p\u003e\u003ch3\u003eDoes it cut into the factory fuel lines?\u003c\/h3\u003e\u003cp\u003eNo cutting is needed. The kit supplies adapter lines that connect the sensor into the factory F-Series fuel line.\u003c\/p\u003e\u003ch3\u003eWhat is the difference between this and the ESSIM kit?\u003c\/h3\u003e\u003cp\u003eThis kit is the sensor and plumbing. The ESSIM kit adds the module, the harness adapters and the outputs, so it is a complete monitoring package rather than one component of one.\u003c\/p\u003e","vendor":"Nostrum High Performance","product_type":"Fuel Sensors","created_at":"2026-07-24T13:02:24+01:00","handle":"nostrum-nostrum-bmw-f-series-ethanol-sensor-kit-l081-1109","updated_at":"2026-09-08T16:29:45+01:00","published_at":"2026-07-24T17:57:30+01:00","template_suffix":null,"published_scope":"global","tags":"BMW, brand:nostrum-high-performance, cat:fuel, dept:performance-parts, make:bmw, type:fuel-sensors","variants":[{"id":54805978775894,"product_id":11142672810326,"title":"Default Title","price":"355.06","sku":"L081-1109","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-24T13:02:24+01:00","updated_at":"2026-09-08T16:29:45+01:00","taxable":true,"barcode":null,"grams":0,"image_id":null,"weight":0.0,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14231271965014,"product_id":11142672810326,"name":"Title","position":1,"values":["Default Title"]}],"images":[],"image":null}}