Four Seasons 73735 HVAC Blend Door Actuator - Left
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Four Seasons

Four Seasons 73735 HVAC Blend Door Actuator - Left

Brand Four Seasons 73735
Position Left
Door Linkage Arm
Mounting Ear Qty. 4
Style Hvac air door actuator
Terminal Pin Qty. 5
Fits Acura · 5 vehicles

HVAC air door actuator. Controls blend door movement for precise cabin airflow.

Arm linkage. Uses an arm-style linkage for dependable door actuation.

Five-pin connector. Provides a secure electrical connection for consistent operation.

Cross-references Four Seasons 73735, 79166SEPA01 and 79166SEPA02 for the same application. See all 6.

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HVAC Blend Door Actuator for Acura TL

Restore proper cabin temperature control with this Four Seasons HVAC blend door actuator, part number 73735. It is built for the left-side HVAC air door application on 2004-2008 Acura TL models and uses a 5-terminal pin layout with an arm-style door linkage.

Key Features

  • Fits 2004-2008 Acura TL, left
  • HVAC air door actuator style for blend door control
  • Arm-style door linkage for the specified HVAC door application
  • 4 mounting ears for secure installation alignment
  • 5-terminal pin electrical connection
  • Four Seasons part number 73735

Detailed Description

The Four Seasons 73735 HVAC blend door actuator is a direct-fit replacement for the left-side climate control door on Acura TL vehicles from 2004 through 2008. It is used to move the HVAC blend door so the system can regulate air temperature and direct conditioned air through the proper path. If your Acura TL has inconsistent cabin temperature or the air distribution door is not responding correctly, this actuator addresses the control component at the source. Four Seasons backs this part with more than 50 years of mobile A/C experience and builds it to deliver long service life in everyday HVAC operation.

This part cross-references 79166SEPA01 and ACT2085IM for the same application.

Common Issues This Part Can Help Resolve

  • Incorrect cabin temperature on the driver side
  • HVAC blend door not moving as commanded
  • Air stuck on hot or cold in the Acura TL
  • Uneven or inconsistent climate control output
  • Loss of proper HVAC air door response

Installation Notes and Tips

Verify the left-side location and 5-pin connector before installation. Compare the original actuator’s mounting ear layout and arm linkage to confirm match with the existing HVAC door assembly. After installation, cycle the climate controls to allow the system to relearn door positions if required by the vehicle.

Quality Assurance

Four Seasons engineers and tests its HVAC components for dependable operation, drawing on decades of mobile air conditioning experience. Part number 73735 is built as an OE-style replacement for the specified Acura TL application.

Related reading

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2008AcuraTLLeft—
2007AcuraTLLeft—
2006AcuraTLLeft—
2005AcuraTLLeft—
2004AcuraTLLeft—
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 7373579166SEPA0179166SEPA02ACT2085IMBDAA1449DA1673