{"product_id":"standard-ignition-ax451-hvac-heater-core-temperature-sensor","title":"Standard Ignition AX451 HVAC Heater Core Temperature Sensor","description":"\u003ch2\u003eHVAC Heater Core Temperature Sensor for BMW\u003c\/h2\u003e\u003cp\u003eStandard Ignition AX451 is an HVAC heater core temperature sensor built for BMW heating system applications that require a rectangular plug-in connection and a 2-pin terminal layout. It is used in heater and auxiliary heater temperature monitoring circuits on a wide range of BMW 5 Series, 6 Series, 7 Series, and M models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Standard Ignition\u003c\/li\u003e\n\u003cli\u003ePart number: AX451\u003c\/li\u003e\n\u003cli\u003eHVAC heater core temperature sensor\u003c\/li\u003e\n\u003cli\u003eFemale rectangular plug-in connector\u003c\/li\u003e\n\u003cli\u003e2 male pin terminals\u003c\/li\u003e\n\u003cli\u003eDirect-fit style sensor for BMW HVAC temperature sensing applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eStandard Ignition AX451 is an HVAC heater core temperature sensor used to monitor heater core temperature in BMW climate control systems. The sensor features a female rectangular connector, plug-in connection type, and two male pin terminals for a straightforward electrical interface. This part number is listed for a broad range of BMW applications, including 2013-2019 BMW 530i, 2017-2019 BMW 540i, 2013-2019 BMW 740i, and 2018-2019 BMW M5 models, along with earlier BMW vehicles equipped with an auxiliary heater. This part cross-references 64116920430 and TS57578 for the same application. Standard Ignition AX451 is a practical replacement choice when servicing BMW HVAC temperature sensing faults.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestoring heater core temperature signal accuracy\u003c\/li\u003e\n\u003cli\u003eAddressing HVAC temperature control faults in BMW climate systems\u003c\/li\u003e\n\u003cli\u003eReplacing a damaged or failed heater core temperature sensor\u003c\/li\u003e\n\u003cli\u003eCorrecting auxiliary heater temperature monitoring issues on listed BMW applications\u003c\/li\u003e\n\u003cli\u003eResolving intermittent climate control readings tied to sensor circuit problems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify connector shape, terminal style, and vehicle application before installation. This sensor uses a female rectangular plug-in connector with two male pins, so the mating harness must match the OE-style configuration. For fitment, use the exact vehicle listing: Fits 2017-2019 BMW 530i, N\/A; Fits 2017-2019 BMW 530i xDrive, N\/A; Fits 2017-2019 BMW 540i, N\/A; Fits 2017-2019 BMW 540i xDrive, N\/A; Fits 2013-2019 BMW 640i Gran Coupe, N\/A; Fits 2014-2019 BMW 640i xDrive Gran Coupe, N\/A; Fits 2013-2019 BMW 650i Gran Coupe, N\/A; Fits 2013-2019 BMW 650i xDrive Gran Coupe, N\/A; Fits 2017-2019 BMW 740e xDrive, N\/A; Fits 2013-2019 BMW 740i, N\/A; Fits 2017-2019 BMW 740i xDrive, N\/A; Fits 2013-2019 BMW 750i, N\/A; Fits 2018-2019 BMW M5, N\/A; Fits 2014-2019 BMW M6 Gran Coupe, N\/A; Fits 2017-2019 BMW M760i xDrive, N\/A; Fits 2013-2018 BMW 640i, N\/A; Fits 2014-2018 BMW 640i xDrive, N\/A; Fits 2013-2018 BMW 650i, N\/A; Fits 2013-2018 BMW 650i xDrive, N\/A; Fits 2013-2018 BMW M6, N\/A; Fits 2013-2016 BMW 528i, N\/A; Fits 2013-2016 BMW 528i xDrive, N\/A; Fits 2014-2016 BMW 535d, N\/A; Fits 2014-2016 BMW 535d xDrive, N\/A; Fits 2013-2016 BMW 535i, N\/A; Fits 2013-2016 BMW 535i xDrive, N\/A; Fits 2013-2016 BMW 550i, N\/A; Fits 2013-2016 BMW 550i xDrive, N\/A; Fits 2013-2016 BMW ActiveHybrid 5, N\/A; Fits 2015 BMW 740Ld xDrive, N\/A; Fits 2013-2015 BMW 740Li, N\/A; Fits 2013-2015 BMW 740Li xDrive, N\/A; Fits 2013-2015 BMW 750Li, N\/A; Fits 2013-2015 BMW 750Li xDrive, N\/A; Fits 2013-2015 BMW 760Li, N\/A; Fits 2008-2012 BMW 528i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2012 BMW 528i xDrive, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2009-2010 BMW 528i xDrive, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2008-2012 BMW 535i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2009-2012 BMW 535i xDrive, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2006-2012 BMW 550i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2011-2012 BMW 550i xDrive, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2012 BMW 640i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2012 BMW 650i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2012 BMW 650i xDrive, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2010-2012 BMW 740i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2011-2012 BMW 740Li, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2010-2012 BMW 750i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2010-2012 BMW 750i xDrive, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2010-2012 BMW 750Li, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2010-2012 BMW 750Li xDrive, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2010-2012 BMW 760Li, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2012 BMW ActiveHybrid 5, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2012 BMW M5, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2008-2010 BMW M5, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2006 BMW M5, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2003 BMW M5, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2007-2012 BMW M6, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2008 BMW 528xi, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2008 BMW 535xi, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2002-2007 BMW 525i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2006-2007 BMW 525xi, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2002-2007 BMW 530i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2006-2007 BMW 530xi, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2007 BMW M5, N\/A, w\/o Auxiliary Heater; Fits 2004-2006 BMW 545i, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.; Fits 2004-2005 BMW 645Ci, N\/A, Compatible with vehicles equipped with an Auxiliary Heater.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eStandard Ignition supplies replacement electrical and sensor components for automotive service applications. AX451 is cataloged for BMW HVAC heater core temperature sensor use and is supported by the listed OE-style interchange references.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":52816435970229,"sku":"FBHK-AX451","price":78.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_AX451_Fro.jpg?v=1784357276","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-ax451-hvac-heater-core-temperature-sensor","provider":"PartCatalog","version":"1.0","type":"link"}