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Vents / Grilles

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DISPLAYING 1 to 16 (of 19 products)
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911571049KIT
Product Information
Product Information

Repair kit, heater air control box. 
Kit for one control box - 2 required per car

Fits:

Porsche 911 - 1965 to 1989
Porsche 911 turbo - 1975 to 1989

Kit includes

1 x Heater air control cover front 
1 x Heater air control cover rear
1 x Heater air control flap
1 x Heater air control lower flange
1 x Heater air control lower vent

Covers and flap for diagram ref no 10 and items 19, 20




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911571049KIT
91157104907

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911552205CR
Product Information
Product Information
Air Vent Round, In Clock Position.

Fits:
Porsche 911 1965>>1989

Clock position air vent, perfect for adding a face vent in the the clock position on a 911.
Connect to the Classic Retrofit blower unit using 60mm duct.

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Related, superseded, cross reference or alternative numbers for comparison.

911552205CR
91155220500

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Special Order item
96457205
Product Information
Product Information
Centre air vent.

porsche

Options:
- RHD Cars (like UK), part number 9645720520001C
- LHD Cars (like EUROPE), part number 9645720510001C

Fits:
Porsche 911 1986>>
Porsche 930 Turbo 1986>>
Porsche 964 1989-94
Porsche 993 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 10.

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96457205
9645720520001C
9645720510001C

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Special Order item
9115710670
Product Information
Product Information
Centre air vent.

Fits:
Porsche 911 1977-85
Porsche 930 Turbo >>1985

Options:
- Cars with air conditioning
- Cars without air conditioning

Please Select below

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9115710670
91157106703
91157106702

The product you are viewing cross references to these numbers
Special Offer
91157134701/1
Product Information
Product Information
Control vent heater box. 
Sold each - 2 required per car

Fits:
Porsche 911 - 1969 to 1989
Porsche 911 turbo - 1975 to 1989
Porsche 912 - 1969 to 1976

Can be used for Left or Right


Diagram ref no 20



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91157134701
90157134832
91157134801
91157134701
91157134800

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Special Order item
90157132532
Product Information
Product Information
Fresh air vent seal.

porsche

Fits:
Porsche 911 1969-89
Porsche 911 (930) Turbo 1975-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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90157132532
90157132532

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Special Offer
90157132532/1
Product Information
Product Information
Fresh air vent seal.

oematch

Fits:
Porsche 911 1969-89
Porsche 911 (930) Turbo 1975-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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90157132532
90157132532

The product you are viewing cross references to these numbers
Special Order item
99355941100
Product Information
Product Information
Grille Front Air Vent.

porsche

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98

This product supersedes Porsche's old part numbers:
- 91155941000
- 9115594100070K

Click 'Zoom in' for large parts diagram.
Diagram ref no 25

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99355941100
99355941100
91155941000
9115594100070K
90155941020

The product you are viewing cross references to these numbers
99355941100/1
Product Information
Product Information
Grille front air vent.

oematch

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98

Fits ventilation frame 91155940100

Click 'Zoom in' for large parts diagram.
Diagram ref no 25

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99355941100
99355941100
91155941000
9115594100070K
90155941020
90155941000

The product you are viewing cross references to these numbers
Special Order item
9115594010070K
Product Information
Product Information
Grille surround.

porsche

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 26

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9115594010070K
91155940100
9115594010070K

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Special Offer
91157104907/3
Product Information
Product Information
Heating air control box flap. 

Fits:
Porsche 911 - 1969 to 1989
Porsche 911 turbo - 1975 to 1989

This is a reproduction of the internal flap for the Air Control Box found in 911 models.
The original was made from hard plastic which became brittle over time. 
We now manufacture a modern version from tough carbon fibre nylon which is much more durable.

Diagram ref no 15

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91157104907
91157104907
91157105007
90157104932
90157105032
91157104901
91157104903
91157104905
91157105001
91157105003
91157105005
91157105006

The product you are viewing cross references to these numbers
Special Offer
91157104907/2
Product Information
Product Information
Heating air control box half - Centre Piece
When bought together with T-Piece, these will fit left and right.

Fits:
Porsche 911 - 1969 to 1989
Porsche 911 turbo - 1975 to 1989

This is a reproduction of the centre section for the Air Control Box found in 911 models. 

Please note: 
The metal attachments and clips are not included and should be carried over from the original. This involves drilling holes in the new part and riveting the metal pieces into their correct positions as per the original.

Diagram ref no 15

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91157104907
91157104907
91157105007
90157104932
90157105032
91157104901
91157104903
91157104905
91157105001
91157105003
91157105005
91157105006

The product you are viewing cross references to these numbers
Special Offer
91157104907/1
Product Information
Product Information
Heating air control box half - Centre Piece
When bought together with T-Piece, these will fit left and right.

Fits:
Porsche 911 - 1969 to 1989
Porsche 911 turbo - 1975 to 1989

This is a reproduction of the centre section for the Air Control Box found in 911 models. 

Please note: 
The metal attachments and clips are not included and should be carried over from the original. This involves drilling holes in the new part and riveting the metal pieces into their correct positions as per the original.

Diagram ref no 15

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91157104907
91157104907
91157105007
90157104932
90157105032
91157104901
91157104903
91157104905
91157105001
91157105003
91157105005
91157105006

The product you are viewing cross references to these numbers
AKKOOLNDUCT
Product Information
Product Information
Kool'n Duct - 911 Under dash duct for better air flow.
Duct is sold One (1) per order.

Tired of being hot with no airflow in your 1969 to 1989 911, these ducts redirect the footwell air ducts to blow cool outside air into all your "right" places. Stop driving in the heat and getting all the stink... Buy your "Kool'n Duct" today and keep the airflow moving to all the right parts!  These work by directing the air right to you vs to the back of the footwell.

DUCT is sold as One (1) Kool'n Duct Per Order. 
Our 911's have two footwell ducts, one for the driver + one for the passenger, so you will need to order 2 if you want to do both Drivers and Passengers sides.

Please note:
This part is on special order terms. Delivery time is normally 8-10 weeks. It is not a subject to cancellation or return if not required.
Special Offer
9015710XX32
Product Information
Product Information
Lower part ventilation box
Left and right is the same.
Offer is for 1 piece. For one car you need 2 pieces.

Fits:
Porsche 911 912 1965-1989

Diagram ref no 15

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9015710XX32
90157105032
90157104932
91157105100
91157105101
91157105006
91157105007
91157104902
91157104904
91157104906
91157104907

The product you are viewing cross references to these numbers
Special Offer
91155106704/1
Product Information
Product Information
Luggage compartment dash cover.
Replacement card board type cover with fixing points

Fits:
Porsche 911 08/1968 - 07/1975
LHD or RHD cars

Section of diagram ref no 32

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91155106704
91155106700
91155106704

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DISPLAYING 1 to 16 (of 19 products)
1 2
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About Vents / Grilles

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

  • Precision-engineered Porsche vents and grilles for HVAC systems.
  • Durable materials designed for long-lasting use.
  • Smooth, silent airflow direction adjustment.
  • Perfect fitment for classic and modern Porsche interiors.
  • Restores both cabin comfort and original aesthetic quality.
  • Ideal for interior restoration, repair, and detailing projects.       

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