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Air cooling parts

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DISPLAYING 1 to 15 (of 15 products)
91110603300/1
Product Information
Product Information
Air deflector alternator. 

Fits:
Porsche 911 - 1970 to 1973
Porsche 911 2.7 MFI - 1974 to 1977
Porsche 911 turbo - 1975 to 1977
Porsche 914-6


The air deflector serves as an air baffle and provides optimal cooling of the cylinders. Bolts to the back of the alternator.

Diagram ref no 13



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91110603300
91110603300

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91110603305/1
Product Information
Product Information
Air deflector alternator. 
The air deflector serves as an air baffle and provides optimal cooling of the cylinders. Bolts to the back of the alternator.

Fits:
Porsche 911 - 1975 to 1977
Porsche 911 SC - 1978 to 1983

Diagram ref no 10

Mounted on the rear of the alternator or alternator hub, bolting into or adjacent to the fan housing / ventilation shroud.

What it does:
Guides airflow from the cooling fan over the alternator and engine to maintain proper cooling
 Extends or positions the alternator hub correctly so pulleys are aligned and belt tension is correct
 Helps ensure consistent air circulation in the engine cooling system

Over time, deflectors or hub extensions can become warped, cracked, or corroded, compromising airflow and misaligning pulleys. A damaged deflector may lead to poor alternator cooling, reduced alternator lifespan, or belt misalignment. Replacing restores correct spacing, airflow direction, and ensures reliable alternator performance under all conditions.

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91110603305
91110603305
91110603304
91110603303

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Special Order item
91110605502
Product Information
Product Information
Air deflector alternator. 

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 911 turbo - 1984 to 1989

The air deflector serves as an air baffle and provides optimal cooling of the cylinders. Bolts to the back of the alternator.

Diagram ref no 10



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91110605502
91110605502
91110605501

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91110605502/1
Product Information
Product Information
Air deflector alternator. 

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 911 turbo - 1984 to 1989

The air deflector serves as an air baffle and provides optimal cooling of the cylinders. Bolts to the back of the alternator.

Diagram ref no 10



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91110605502
91110605502
91110605501

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91110640601/1
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Air duct for oil cooler.

Fits:
Porsche 911 - 1972 to 1989
Porsche 914-6 - 1970 to 1976

Diagram ref no 3

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91110640601
91110640600
91110640601

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91110640601
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Air duct for oil cooler.

Fits:
Porsche 911 1972-89
Porsche 914 1970-76

Diagram ref no. 3

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91110640601
91110640600
91110640601

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96410625120
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Product Information
Alternator fan / impeller housing strap.

Fit:
Porsche 911 1965-89
Porsche 911 (930) Turbo 1975-89
Porsche 964 Turbo 3.3L / Turbo 3.6L 1991-94
Porsche 914-6 1970-76

Diagram ref no 2

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96410625120
96410625120
90110625102
90110625103

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96410625120/1
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Product Information
Alternator fan / impeller housing strap.  Stainless steel 

Fit:
Porsche 911 1965-89
Porsche 911 (930) Turbo 1975-89
Porsche 964 Turbo 3.3L / Turbo 3.6L 1991-94
Porsche 914-6 1970-76

Diagram ref no 2

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96410625120
96410625120
90110625102
90110625103

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99310625150
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Product Information
Alternator fan / impeller housing strap.
Genuine Porsche alternator fan / impeller housing strap for 911 (993). Ensures secure fit, proper alignment, and reliable cooling performance.

Fit:
Porsche 993 Turbo 1994 - 1997

Diagram ref no 6

Location: Engine bay, securing the alternator fan / impeller housing  

What this product does:
•  Holds the alternator fan and impeller housing firmly in place
•  Ensures proper cooling airflow through the engine
•  Maintains alignment of the fan assembly to avoid vibration or damage

Over time, the original strap may stretch, corrode, or lose strength, reducing its ability to hold the housing firmly in place. A failing strap can cause the fan assembly to loosen, resulting in noise, vibration, or poor cooling performance. Replacing it restores secure fitment and proper tension, ensuring your Porsche’s cooling system continues to operate efficiently.

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99310625150
99310625150

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99310625150/1
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Alternator fan / impeller housing strap.
Direct replacement alternator fan and impeller housing strap for Porsche 911 (993) models. This strap secures the alternator fan and housing assembly in place, ensuring proper alignment and reliable cooling performance. Built to OE specifications, it matches the fit and strength of the original part while offering excellent durability.

Fit:
Porsche 993 turbo - 1994 to 1997

Diagram ref no 6

Location: Engine bay, securing the alternator fan / impeller housing  

What this product does:
•  Holds the alternator fan and impeller housing firmly in place
•  Ensures proper cooling airflow through the engine
•  Maintains alignment of the fan assembly to avoid vibration or damage

With age, the original strap can weaken, stretch, or corrode, making it less effective at securing the housing. If it fails, the fan assembly may loosen, leading to unwanted noise, vibration, or reduced cooling efficiency. Replacing the strap ensures a secure fit and proper tension, keeping your Porsche’s cooling system performing as intended.

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99310625150
99310625150

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Clearance Sale
91110603300/1U
Product Information
Product Information
DAMAGED Air Deflector Alternator.
This is a damaged unit, offered for parts or refurbishment purposes only. Ideal for restoration specialists, collectors, or workshops looking for components at reduced cost.

NOTE: For spares, repair, or core replacement only – not suitable for direct fitment without repair.

Condition: 
This air deflector is brand new and never fitted. It has some transport damage which is repairable.
Please see the gallery of images before purchasing.

Fits:
  • Porsche 911 1970-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L
  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 914 (1970-1976)


Diagram Ref No 13



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91110603300
91110603300

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90110610300R/1
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Fan housing with fan blades. 

Fits:
Porsche 911 RSR
Porsche 906
Porsche 914 GT

Dimensions:

Diameter: 225mm

Material:
Aluminium

93510610300R/1
Product Information
Product Information
Fan housing with fan blades. 

oematch

Fits:
Porsche 935

Inlet funnel with cooling fan wheel for the 935 flat, horizontal fan

Material:
Fan Housing - GRP (honey coloured)
Fan Blades - Aluminium



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93510610300R
93010601200
93010601201

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TK162
Product Information
Product Information
2-piece oil cooler duct 914 GT.

fibreglass

Fits:
Porsche 914 GT

Please note: This part is on special order terms. It will be made to order that could take 6-8+ weeks. It is not a subject to cancellation or return if not required.
Special Order item
PCG10630601
Product Information
Product Information
Spacer ring 20.5mm alternator to cooling fan housing.

Fits:
Porsche 911 - 1969 to 1973
Porsche 914-6 - 1970 to 1972

Fits between diagram ref no 1 and 3




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PCG10630601
PCG10630601

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DISPLAYING 1 to 15 (of 15 products)
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About Air cooling parts

Air Cooling Parts – Engine Efficiency and Temperature Control for Porsche Vehicles

Air cooling parts are essential components designed to regulate engine temperature, ensuring your Porsche runs efficiently, safely, and at peak performance. These components manage airflow and heat dissipation within air-cooled engines, preventing overheating and maintaining consistent operating conditions.

At Design911, we offer a wide selection of genuine and high-quality air cooling parts for Porsche models including classic air-cooled 911s, 964, 993, and more. Our range includes fan assemblies, shrouds, ducts, pulleys, housings, and cooling tins, all precision-engineered for exact fitment and reliable thermal management. Every part is built to the same high standards as the original factory components, ensuring lasting performance and authenticity.

What Do Air Cooling Parts Do?

Air cooling components work together to keep the engine’s operating temperature stable by directing airflow across critical areas. Key functions include:

  • Cooling the engine cylinders and heads to prevent overheating.
  • Regulating airflow through fans, ducts, and shrouds.
  • Maintaining consistent engine performance under varying load and speed conditions.
  • Supporting mechanical efficiency and preventing thermal stress on components.

For Porsche’s legendary air-cooled engines, proper airflow and cooling performance are vital to achieving both longevity and smooth, balanced operation.

Why Do Air Cooling Parts Fail?

Over time, air cooling components can degrade due to exposure to heat, vibration, and environmental wear. Common failure causes include:

  • Cracked or warped shrouds and ducts from thermal stress.
  • Fan damage or imbalance caused by corrosion or debris.
  • Loose pulleys or belts reducing airflow efficiency.
  • Corroded or missing fasteners and mounts leading to rattling or misalignment.
  • Material fatigue from age or improper maintenance.

Symptoms of failure include higher-than-normal engine temperatures, noise from the cooling fan, or visible cracks and wear on housing parts.

Why Replace Faulty Air Cooling Parts?

A compromised cooling system can lead to overheating, reduced performance, or even engine failure. Replacing worn or damaged components ensures optimal air circulation and temperature regulation, protecting your engine’s reliability and value.

Benefits of replacement include:

  • Restored and efficient airflow across engine components.
  • Consistent operating temperatures and improved engine longevity.
  • Prevention of costly overheating-related damage.
  • Factory-spec fitment and manufacturer-quality materials.

All air cooling parts in this range are designed to meet or exceed exacting engineering standards, ensuring durability, precision, and confidence for both restoration projects and regular maintenance.

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