Air conditioning blower regulator. Porsche 991.1 / 991.2 / 981 Boxster / 981C Cayman / 982 Boxster / 982C Cayman  ❭  99162442301

Air conditioning blower regulator.
Genuine Porsche HVAC blower motor regulator (also known as a blower resistor or control unit). It is an original equipment component manufactured to Porsche factory specifications and designed to precisely control the speed of the interior blower motor within the vehicle’s heating, ventilation, and air conditioning (HVAC) system.

Fits:
For cars with Air Conditioner (option code: 573)
Porsche 981 Boxster 2012 - 2016 
Porsche 981SP Boxster Spyder 2016
Porsche 982 (718) Boxster 2017 >>
Porsche 982SP (718) Boxster Spyder 2019>>

Porsche 981C Cayman 2014 - 2016
Porsche 981C Cayman GT4 2016
Porsche 982C (718C) Cayman 2017>>
Porsche 982C (718C) Cayman GT4 2019>>

Porsche 991.1 Carrera 2012 - 2016
Porsche 991.2 Carrera 2017 - 2019
Porsche 991 Turbo 2014- 2020
Porsche 991 R / GT3 / RS / GT-Speed 2014 -2021

Diagram ref no 16.

The blower motor regulator controls fan speed variation in response to climate control settings. It allows the HVAC system to smoothly adjust airflow from low to high speeds, ensuring consistent cabin temperature control and passenger comfort. When functioning correctly, it enables quiet, responsive, and efficient blower operation.

Function:
•  Fan Speed Control: Regulates the electrical load to the blower motor for smooth multi-speed operation.
•  Climate Comfort Management: Ensures accurate airflow delivery based on driver and passenger HVAC settings.
•  System Protection: Prevents electrical overload of the blower motor by maintaining controlled power delivery.

A failing blower motor regulator can cause loss of fan speed control, intermittent blower operation, or complete HVAC failure. Common symptoms include the blower only working at one speed (often maximum) or not operating at all. Replacing the unit restores factory-correct airflow control, reliability, and cabin comfort while ensuring full system compatibility.

Replace the blower motor regulator if you experience:
•  Blower fan stuck on one speed
•  No airflow from vents despite HVAC settings
•  Intermittent or unpredictable fan operation
•  HVAC system faults related to blower control

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