HVAC Air Door Actuator. HVAC Mix Door Actuator. HVAC Temperature Door Actuator.

Part Number: 27742-1LA0B
Supersession(s): 27742-1PB1A; 277421LA0B

  • Small electric motor that controls blend door
  • Helps keep cabin at desired temperature
  • If not replaced entire HVAC system can stop working

When you turn on the heating or air conditioning in your Nissan, the HVAC system mixes warm and cool air to get your passenger cabin to the desired temperature. Your vehicle depends on its HVAC Air Door Actuator. HVAC Mix Door Actuator. HVAC Temperature Door Actuator., which is a small electric motor, to control the flow and blend of the cold and hot air. Without actuators, your HVAC system can't work.

Electrical burnout and gear failure are frequent causes of a bad HVAC actuator. Regardless of the cause, there are a few apparent signs that you need a new Nissan HVAC Air Door Actuator. HVAC Mix Door Actuator. HVAC Temperature Door Actuator. Your vents may blow only hot air, only cold air, or no air at all. Also, you might notice odd noises coming from the malfunctioning actuator.

Your Nissan has multiple HVAC actuators, so make sure you figure out which one has failed before replacing it. When browsing for a new actuator, you want to find one that fits your model and year. Shopping OEM parts is an easy way to find HVAC parts custom-made for your Nissan. Plus, Genuine Nissan Parts come with an exclusive 12-month/12,000-mile (whichever comes first) limited warranty.

The HVAC Air Door Actuator. HVAC Mix Door Actuator. HVAC Temperature Door Actuator., part 277421LA0B, will fit your Nissan Altima 2013-2018. See the What This Fits tab for more fitment information.


Fits Altima, Armada, Maxima, Patrol

Diagram HEATER & BLOWER UNIT for your Nissan
#27733NA
Required: 1
BLOWER UNIT. 4S<201504 - 201811>
BLOWER UNIT. 4S<201811 - 202010>
BLOWER UNIT. 4S<202010 ->
HEATER - FR. 4S<201504 - 201811>
HEATER - FR. 4S<201811 - 202010>
HEATER - FR. 4S<202010 ->
2016 - 2017
- 4S
Diagram HEATER & BLOWER UNIT for your Nissan
#27733NA
Required: 1
BLOWER UNIT. 4S<201205 - 201405>
BLOWER UNIT. 4S<201405 - 201510>
BLOWER UNIT. 4S<201510 - 201709>
BLOWER UNIT. 4S<201709 ->
HEATER - FR. 4S<201205 - 201405>
HEATER - FR. 4S<201405 - 201510>
HEATER - FR. 4S<201510 - 201709>
HEATER - FR. 4S<201709 ->
2013 - 2015
- 4S. (25SV + 25SVCONV + 25SL + 35SV + 35SL + 25SL/MR)

2015 - 2015
- 4S. (25SVCONV + 25SL + 35SV + 35SL + 25SVTECH + 25SLTECH)

2015 - 2017
- 4S. (25SV + 25SVCONV + 25SL + 35SL + 25SVNAVI + 25TECH + 35TECH)

2017 - 2018
- 4S. (25SV + 25SL + 25SVNAVI + 25SLTECH + 35SLTECH)

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