Four Seasons HVAC Blend Door Actuator P/N:73446

Be the first to review this product
$71.99
MPN: 73446
Item Package Quantity: 1
Adding to cart… The item has been added

Have questions?

Four Seasons HVAC Blend Door Actuator P/N:73446
Four Seasons HVAC Blend Door Actuator P/N:73446
$71.99

Get your cabin temperature blend back under control with the FOUR SEASONS blend door actuator (P/N 73446). This small electric motor drives the blend (air) door inside the HVAC case, positioning it to control how much air passes through the heater core and mix into the vents. It's a direct-fit replacement for a long list of medium-duty trucks, including the 1997-2009 GMC T6500, the 1996-2009 Isuzu FTR and FVR, and the Chevrolet T6500 (1997-2002 and 2004-2009) — see the Buyer's Guide tab for the full list of applications.

  • Includes as applicable: lever arm, gear, cam gear hardware and linkage.
  • Built to drive the door: quality internal motor, drive gears, electronics and connections.
  • Tested: checked for function, durability and longevity.
  • Backed by experience: from Four Seasons, with over 50 years in mobile A/C.

If a failed actuator is the cause of a temperature knob that won't change the air, a door that stays stuck on hot or cold, or a repeated clicking from behind the dash, this hvac blend door actuator replaces the original unit. Diagnose the cause before ordering to confirm the actuator, and not the door or control head, is at fault.

Interchange: 604951 · BDAB1392 · 900446 · 1835798300 · 1835798301 · 8972213110 · 97721515 · 1835798290 · 1835798291 · DA1360 · A60446 · MT18839

This part cross-references / interchanges with the following part numbers:

73446, 604951, BDAB1392, 900446, 1835798300, 1835798301, 8972213110, 97721515, 1835798290, 1835798291, DA1360, A60446, MT18839

Frequently Asked Questions

What does the Four Seasons 73446 blend door actuator do?

It's a small electric motor that positions the blend (air) door inside the HVAC case, controlling how air is routed through the heater core to set the cabin temperature and airflow.

Which vehicles does this blend door actuator fit?

It fits many medium-duty trucks, including the 1997-2009 GMC T6500, the 1996-2009 Isuzu FTR and FVR, and the Chevrolet T6500 (1997-2002 and 2004-2009). Check the Buyer's Guide tab for the complete application list.

What's included with this actuator?

As applicable to the application, it includes the lever arm, gear, cam gear hardware and linkage, along with the internal motor, drive gears, electronics and connections.

What are signs my blend door actuator may need replacing?

Common signs include a clicking or knocking noise behind the dash, temperature that won't change with the control, or air stuck on only hot or only cold. Diagnose the cause first.

What part numbers does this actuator replace?

It cross-references 604951, BDAB1392, 900446, 1835798300, 1835798301, 8972213110, 97721515, 1835798290, 1835798291, DA1360, A60446 and MT18839.