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Standard Ignition AX451 HVAC Heater Core Temperature SensorOE Quality 60-Day Returns
Part #: AX451

Standard Ignition AX451 HVAC Heater Core Temperature Sensor

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Fitment: BMW, 525i, 525xi, 528i, 528i xDrive, 528xi, 530e, 530e xDrive, 530i, 530i xDrive, 530xi, 535d, 535d xDrive, 535i, 535i xDrive, 535xi, 540i, 540i xDrive, 545i, 550i, 550i xDrive, 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe, 645Ci, 650i, 650i Gran Coupe, 650i xDrive, 650i xDrive Gran Coupe, 740e xDrive, 740i, 740i xDrive, 740Ld xDrive, 740Li, 740Li xDrive, 750i, 750i xDrive, 750Li, 750Li xDrive, 760Li, ActiveHybrid 5, M5, M6, M6 Gran Coupe, and M760i xDrive
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Not what you need? See all HVAC Heater Core Temperature Sensor options

HVAC Heater Core Temperature Sensor for BMW

Standard 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.

Key Features

  • Brand: Standard Ignition
  • Part number: AX451
  • HVAC heater core temperature sensor
  • Female rectangular plug-in connector
  • 2 male pin terminals
  • Direct-fit style sensor for BMW HVAC temperature sensing applications

Detailed Description

Standard 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.

What It Is Used For

  • Restoring heater core temperature signal accuracy
  • Addressing HVAC temperature control faults in BMW climate systems
  • Replacing a damaged or failed heater core temperature sensor
  • Correcting auxiliary heater temperature monitoring issues on listed BMW applications
  • Resolving intermittent climate control readings tied to sensor circuit problems

Installation Notes and Tips

Verify 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.

Quality Assurance

Standard 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.

BrandStandard Ignition
Part NumberAX451
Connector GenderFemale
Connector Quantity1
Connector ShapeRectangular
Connector TypePlug in
ContentsSensor
Terminal GenderMale
Terminal Quantity2
Terminal TypePins

This part fits 253 vehicles. Search below:

YearMakeModelPositionNotes
2019BMW530eN/A
2019BMW530e xDriveN/A
2019BMW530iN/A
2019BMW530i xDriveN/A
2019BMW540iN/A
2019BMW540i xDriveN/A
2019BMW640i Gran CoupeN/A
2019BMW640i xDrive Gran CoupeN/A
2019BMW650i Gran CoupeN/A
2019BMW650i xDrive Gran CoupeN/A
2019BMW740e xDriveN/A
2019BMW740iN/A
2019BMW740i xDriveN/A
2019BMW750iN/A
2019BMW750i xDriveN/A
2019BMWM5N/A
2019BMWM6 Gran CoupeN/A
2019BMWM760i xDriveN/A
2018BMW530eN/A
2018BMW530e xDriveN/A
2018BMW530iN/A
2018BMW530i xDriveN/A
2018BMW540iN/A
2018BMW540i xDriveN/A
2018BMW640iN/A
2018BMW640i Gran CoupeN/A
2018BMW640i xDriveN/A
2018BMW640i xDrive Gran CoupeN/A
2018BMW650iN/A
2018BMW650i Gran CoupeN/A
2018BMW650i xDriveN/A
2018BMW650i xDrive Gran CoupeN/A
2018BMW740e xDriveN/A
2018BMW740iN/A
2018BMW740i xDriveN/A
2018BMW750iN/A
2018BMW750i xDriveN/A
2018BMWM5N/A
2018BMWM6N/A
2018BMWM6 Gran CoupeN/A
2018BMWM760i xDriveN/A
2017BMW530iN/A
2017BMW530i xDriveN/A
2017BMW540iN/A
2017BMW540i xDriveN/A
2017BMW640iN/A
2017BMW640i Gran CoupeN/A
2017BMW640i xDriveN/A
2017BMW640i xDrive Gran CoupeN/A
2017BMW650iN/A
2017BMW650i Gran CoupeN/A
2017BMW650i xDriveN/A
2017BMW650i xDrive Gran CoupeN/A
2017BMW740e xDriveN/A
2017BMW740iN/A
2017BMW740i xDriveN/A
2017BMW750iN/A
2017BMW750i xDriveN/A
2017BMWM6N/A
2017BMWM6 Gran CoupeN/A
2017BMWM760i xDriveN/A
2016BMW528iN/A
2016BMW528i xDriveN/A
2016BMW535dN/A
2016BMW535d xDriveN/A
2016BMW535iN/A
2016BMW535i xDriveN/A
2016BMW550iN/A
2016BMW550i xDriveN/A
2016BMW640iN/A
2016BMW640i Gran CoupeN/A
2016BMW640i xDriveN/A
2016BMW640i xDrive Gran CoupeN/A
2016BMW650iN/A
2016BMW650i Gran CoupeN/A
2016BMW650i xDriveN/A
2016BMW650i xDrive Gran CoupeN/A
2016BMW740iN/A
2016BMW750iN/A
2016BMW750i xDriveN/A
2016BMWActiveHybrid 5N/A
2016BMWM5N/A
2016BMWM6N/A
2016BMWM6 Gran CoupeN/A
2015BMW528iN/A
2015BMW528i xDriveN/A
2015BMW535dN/A
2015BMW535d xDriveN/A
2015BMW535iN/A
2015BMW535i xDriveN/A
2015BMW550iN/A
2015BMW550i xDriveN/A
2015BMW640iN/A
2015BMW640i Gran CoupeN/A
2015BMW640i xDriveN/A
2015BMW640i xDrive Gran CoupeN/A
2015BMW650iN/A
2015BMW650i Gran CoupeN/A
2015BMW650i xDriveN/A
2015BMW650i xDrive Gran CoupeN/A
2015BMW740iN/A
2015BMW740Ld xDriveN/A
2015BMW740LiN/A
2015BMW740Li xDriveN/A
2015BMW750iN/A
2015BMW750i xDriveN/A
2015BMW750LiN/A
2015BMW750Li xDriveN/A
2015BMW760LiN/A
2015BMWActiveHybrid 5N/A
2015BMWM5N/A
2015BMWM6N/A
2015BMWM6 Gran CoupeN/A
2014BMW528iN/A
2014BMW528i xDriveN/A
2014BMW535dN/A
2014BMW535d xDriveN/A
2014BMW535iN/A
2014BMW535i xDriveN/A
2014BMW550iN/A
2014BMW550i xDriveN/A
2014BMW640iN/A
2014BMW640i Gran CoupeN/A
2014BMW640i xDriveN/A
2014BMW640i xDrive Gran CoupeN/A
2014BMW650iN/A
2014BMW650i Gran CoupeN/A
2014BMW650i xDriveN/A
2014BMW650i xDrive Gran CoupeN/A
2014BMW740iN/A
2014BMW740LiN/A
2014BMW740Li xDriveN/A
2014BMW750iN/A
2014BMW750i xDriveN/A
2014BMW750LiN/A
2014BMW750Li xDriveN/A
2014BMW760LiN/A
2014BMWActiveHybrid 5N/A
2014BMWM5N/A
2014BMWM6N/A
2014BMWM6 Gran CoupeN/A
2013BMW528iN/A
2013BMW528i xDriveN/A
2013BMW535iN/A
2013BMW535i xDriveN/A
2013BMW550iN/A
2013BMW550i xDriveN/A
2013BMW640iN/A
2013BMW640i Gran CoupeN/A
2013BMW650iN/A
2013BMW650i Gran CoupeN/A
2013BMW650i xDriveN/A
2013BMW650i xDrive Gran CoupeN/A
2013BMW740iN/A
2013BMW740LiN/A
2013BMW740Li xDriveN/A
2013BMW750iN/A
2013BMW750i xDriveN/A
2013BMW750LiN/A
2013BMW750Li xDriveN/A
2013BMW760LiN/A
2013BMWActiveHybrid 5N/A
2013BMWM5N/A
2013BMWM6N/A
2012BMW528iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW528i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW535iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW535i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW550iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW550i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW640iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW650iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW650i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW740iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW740LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW750iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW750i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW750LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW750Li xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMW760LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMWActiveHybrid 5N/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMWM5N/ACompatible with vehicles equipped with an Auxiliary Heater.
2012BMWM6N/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW528iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW535iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW535i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW550iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW550i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW740iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW740LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW750iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW750i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW750LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW750Li xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMW760LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2011BMWM6N/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW528iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW528i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW535iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW535i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW550iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW740iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW750iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW750i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW750LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW750Li xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMW760LiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMWM5N/ACompatible with vehicles equipped with an Auxiliary Heater.
2010BMWM6N/ACompatible with vehicles equipped with an Auxiliary Heater.
2009BMW528iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2009BMW528i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2009BMW535iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2009BMW535i xDriveN/ACompatible with vehicles equipped with an Auxiliary Heater.
2009BMW550iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2009BMW750iN/A
2009BMW750LiN/A
2009BMW760LiN/A
2009BMWM5N/ACompatible with vehicles equipped with an Auxiliary Heater.
2009BMWM6N/ACompatible with vehicles equipped with an Auxiliary Heater.
2008BMW528iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2008BMW528xiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2008BMW535iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2008BMW535xiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2008BMW550iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2008BMWM5N/ACompatible with vehicles equipped with an Auxiliary Heater.
2008BMWM6N/ACompatible with vehicles equipped with an Auxiliary Heater.
2007BMW525iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2007BMW525xiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2007BMW530iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2007BMW530xiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2007BMW550iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2007BMWM5N/Aw/o Auxiliary Heater
2007BMWM6N/ACompatible with vehicles equipped with an Auxiliary Heater.
2006BMW525iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2006BMW525xiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2006BMW530iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2006BMW530xiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2006BMW545iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2006BMW550iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2006BMWM5N/ACompatible with vehicles equipped with an Auxiliary Heater.
2005BMW525iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2005BMW530iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2005BMW545iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2005BMW645CiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2004BMW525iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2004BMW530iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2004BMW545iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2004BMW645CiN/ACompatible with vehicles equipped with an Auxiliary Heater.
2003BMW525iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2003BMW530iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2003BMWM5N/ACompatible with vehicles equipped with an Auxiliary Heater.
2002BMW525iN/ACompatible with vehicles equipped with an Auxiliary Heater.
2002BMW530iN/ACompatible with vehicles equipped with an Auxiliary Heater.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

64116920430ATSA359AX451TS57578WT5887

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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