Vents / Grilles
Under Dash Air Ducts, Directional (Pair). Porsche 911 1970-89
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Sold As A Pair.
Fits:
Porsche 911 1970>>1989
Sold as a pair, these upgraded air ducts are a smart enhancement for the ventilation system on pre-964 911 models. They provide adjustable, directional cool air to your upper body while still channeling warm air to your feet. Each duct rotates, allowing you to redirect passenger-side cooling toward the driver for added comfort.
Compatible with both the factory ventilation setup and our Electrocooler AC system, installation is straightforward—just remove the original under-dash diffuser and fit our ducts in its place.
Crafted from high-temperature, carbon-fiber-filled nylon, these ducts resist warping or melting under heat. Before ordering, check the condition of your blend valve bases to ensure optimal performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
911571CR
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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