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Vents / Grilles
.jpg?width=197 "Vacuum Unit for Footwell Heater Vent. Porsche 928 1980-95 - 92857407906")
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Footwell Heater Vent Vacuum Unit – HVAC Control Actuator
High-quality replacement footwell heater vent vacuum unit designed for Porsche 928 models.
This component is part of the vehicle’s HVAC (heating,
ventilation, and air conditioning) system, responsible for controlling the
opening and closing of the footwell air vents. It operates via vacuum pressure
to regulate airflow distribution within the cabin, ensuring proper heating
performance and passenger comfort.
Fits:
Porsche 928 4.5L 1980-82
Porsche 928S 4.7L 1981-83
Porsche 928S2 4.7L 1984-86
Porsche 928S4 5.0L 1987-92
Porsche 928GT 5.0L 1989-91
Porsche 928GTS 5.4L 1992-95
Diagram ref no 5
Manufactured to OEM specifications, this vacuum unit ensures precise fitment and reliable operation—ideal for restoring correct airflow control and resolving HVAC system faults.
Key Features
• Direct replacement HVAC vacuum actuator
• Suitable for Porsche 928 models
• Controls footwell heater vent operation
• Restores proper airflow distribution
• OEM-style fit and function
• Durable construction for long-term reliability
Function and Purpose
The vacuum unit controls airflow direction within the cabin.
It helps to:
• Open and close footwell heater vents
• Regulate cabin air distribution
• Maintain effective heating performance
• Support overall HVAC system operation
Why Replace Your Vacuum Unit
Over time, vacuum actuators can fail due to age or diaphragm wear.
Common issues include:
• No airflow to footwell vents
• Stuck or non-responsive vents
• Weak or inconsistent cabin heating
• Vacuum leaks affecting HVAC performance
Replacing the unit restores proper heater function and airflow control.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92857407906
The product you are viewing cross references to these numbers
.jpg?width=197 "Vacuum Unit for Footwell Heater Vent. Porsche 928 1980-95 - 92857407906 - PVSTF")
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Footwell Heater Vent Vacuum Unit – HVAC Control Actuator
High-quality replacement footwell heater vent vacuum unit designed for Porsche 928 models.
This component is part of the vehicle’s HVAC (heating,
ventilation, and air conditioning) system, responsible for controlling the
opening and closing of the footwell air vents. It operates via vacuum pressure
to regulate airflow distribution within the cabin, ensuring proper heating
performance and passenger comfort.
Fits:
Porsche 928 4.5L 1980-82
Porsche 928S 4.7L 1981-83
Porsche 928S2 4.7L 1984-86
Porsche 928S4 5.0L 1987-92
Porsche 928GT 5.0L 1989-91
Porsche 928GTS 5.4L 1992-95
Diagram ref no 5
Manufactured to OEM specifications, this vacuum unit ensures precise fitment and reliable operation—ideal for restoring correct airflow control and resolving HVAC system faults.
Key Features
• Direct replacement HVAC vacuum actuator
• Suitable for Porsche 928 models
• Controls footwell heater vent operation
• Restores proper airflow distribution
• OEM-style fit and function
• Durable construction for long-term reliability
Function and Purpose
The vacuum unit controls airflow direction within the cabin.
It helps to:
• Open and close footwell heater vents
• Regulate cabin air distribution
• Maintain effective heating performance
• Support overall HVAC system operation
Why Replace Your Vacuum Unit
Over time, vacuum actuators can fail due to age or diaphragm wear.
Common issues include:
• No airflow to footwell vents
• Stuck or non-responsive vents
• Weak or inconsistent cabin heating
• Vacuum leaks affecting HVAC performance
Replacing the unit restores proper heater function and airflow control.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92857407906
The product you are viewing cross references to these numbers
Porsche Air Vents & Grilles | Precision Airflow & Interior Comfort Control
Air vents and grilles are essential to your Porsche’s heating, ventilation, and air conditioning (HVAC) system. They control the direction and flow of air within the cabin, ensuring balanced cooling, heating, and defrosting performance. Designed for precision and durability, these components also enhance your vehicle’s interior aesthetics while maintaining optimal airflow efficiency.
At Design911, we supply premium vents and grilles engineered to meet or exceed original design standards. Crafted from durable, heat-resistant materials with exact fitment, our products provide smooth directional control, quiet operation, and a refined cabin appearance.
Whether you’re restoring a classic Porsche interior or replacing worn or damaged components, our vents and grilles deliver dependable airflow management and perfect style integration.
What Do Air Vents & Grilles Do?
Vents and grilles play a key role in your Porsche’s climate control system by distributing air evenly throughout the cabin.
Core Functions:
Direct airflow for heating, cooling, and defrosting. Regulate air volume and direction via adjustable louvers. Provide ventilation to critical cabin zones. Protect HVAC components from debris and dust. Enhance interior styling and comfort.Properly functioning vents ensure consistent cabin temperatures and optimal air distribution from the HVAC system.
Why Do Air Vents & Grilles Fail or Wear Out?
Over time, vents and grilles can degrade due to exposure to sunlight, heat, and repeated use.
Common Causes of Failure Include:
- Broken or loose vent louvers and adjustment mechanisms.
- Fading or cracking from UV exposure.
- Dust or debris accumulation causing restricted airflow.
- Damaged vent tabs or clips affecting fitment.
- Interior wear or impact damage over years of use.
When vents become damaged or misaligned, airflow efficiency drops, leading to uneven heating, cooling, and ventilation performance.
Why Replace Your Porsche Air Vents & Grilles?
Replacing worn vents and grilles restores proper airflow direction and ensures a refreshed, premium cabin appearance. Upgraded or restored components improve climate control precision and prevent airflow loss.
Key Benefits:
- Restores accurate airflow control and distribution.
- Prevents air leaks and blocked vent paths.
- Enhances interior look and comfort.
- Improves HVAC system efficiency and responsiveness.
- Compatible with Porsche 911, Boxster, Cayman, Panamera, Macan, Cayenne, and classic models.
- Perfect for restorations, detailing, and climate system maintenance.
For best results, inspect duct seals and connections during
replacement to ensure full air pressure restoration and quiet operation.
Highlights
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