{"product_id":"1r12-39-10174","title":"EXHAUST CATALYST LAMBDA OXYGEN HEGO SENSOR ASSEMBLY - PRE CAT","description":"\u003cp\u003eEXHAUST CATALYST LAMBDA OXYGEN HEGO SENSOR ASSEMBLY - TOP PRE CAT REAR\u003c\/p\u003e\n\u003cp\u003eGREEN CAP\u003c\/p\u003e\n\u003cp\u003eNUMBER 13 ON PICTURE FITS BEFORE THE CATALYSTS AT TOP OF MANIFOLDS\u003c\/p\u003e\n\u003cp\u003eSOME MODELS 2 REQUIRED (1 PER MANIFOLD) OTHERS 4 REQUIRED (2 PER MANIFOLD) - PLEASE CHECK OR EMAIL IF NOT SURE\u003c\/p\u003e\n\u003cp\u003eFITS ALL YEARS AND MODELS - FOR RAPIDE CHANGES AT MY 2016 - NOT SUITABLE FOR THE VANTAGE V12 S VERSION\u003c\/p\u003e\n\u003cp\u003eLambda sensors operate by measuring the amount of oxygen in the exhaust\u003cbr\u003eThe levels calculated by the lambda are sent as data to the ECU which then calculates and determines how best to achieve the ideal mixture of air and fuel at combustion\u003cbr\u003eWhilst the pre-cat lambda sensor communicates to the ECU regulating the air\/fuel ratio;\u003cbr\u003ethe post-cat lambda sensor performs a diagnostic role, monitoring the catalytic converter\u003cbr\u003eBefore a vehicle fails an emission test or the engine check light appears, drivers may notice increased fuel consumption and\/or a rough idle\u003cbr\u003eMany lambda sensor failures will simply be a result of age\u003cbr\u003eThe lambda sensor operates in extremely high temperatures so damage to the heater element of the sensor is the most frequent fault, along with vibration\/damage and contamination\u003cbr\u003eGaragewire January 2020\u003c\/p\u003e","brand":"Aston Martin Bits","offers":[{"title":"New \/ New","offer_id":49759123079463,"sku":"1R12-39-10174(AM)-1351","price":192.95,"currency_code":"EUR","in_stock":true},{"title":"Used \/ Used","offer_id":51140609835303,"sku":"1R12-39-10174-(AMB)-2730","price":96.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/8869\/1495\/files\/IMG_20250512_095708_15493088-493b-4c34-919f-200e485ebc3d.jpg?v=1777386200","url":"https:\/\/astonmartinbits.com\/products\/1r12-39-10174","provider":"Aston Martin Bits","version":"1.0","type":"link"}