Keep your climate control reading the right temperature with the Standard Ignition HVAC Heater Core Temperature Sensor AX329. It installs as a direct-fit replacement for the 2004-2008 Ford F-150 and the 2004 Ford F-150 Heritage, dropping into the listed applications without guesswork.
This sensor measures temperature at the heater core and relays that signal to the vehicle's climate control system, which uses the reading to help manage blend-door position and cabin air temperature. If a failed sensor is the cause of erratic cabin temperatures or inaccurate climate readings, this replaces it.
- Function: Monitors heater core temperature and reports it to the HVAC/climate control system for cabin temperature regulation.
- Direct fit: Designed to install as a direct-fit replacement for the listed Ford F-150 and F-150 Heritage applications.
- Signs it may need replacing: Inconsistent cabin temperature or inaccurate climate readings — diagnose the cause first, as other components can produce the same symptoms.
Interchange: WT5765 · ATSB10015 · SU8783 · TS57456 · 4L3Z19C734AA · YH1625 · Manufacturer part number AX329
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the AX329 sensor do?
It measures temperature at the heater core and sends the reading to the vehicle's climate control system, which uses it to help regulate blend-door position and cabin air temperature.
What vehicles does this sensor fit?
It's a direct-fit replacement for the 2004-2008 Ford F-150 and the 2004 Ford F-150 Heritage. Check the Buyer's Guide tab to confirm it matches your vehicle.
What are signs this sensor may need replacing?
Inconsistent or inaccurate cabin temperatures and climate control that won't regulate properly can be signs. Diagnose the cause before replacing, since other components can produce the same symptoms.
What numbers does this part interchange with?
WT5765, ATSB10015, SU8783, TS57456, 4L3Z19C734AA, and YH1625.
Is this a direct-fit installation?
Yes, it's designed to install as a direct-fit replacement on the listed Ford F-150 and F-150 Heritage applications.
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