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Air cooling parts

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DISPLAYING 33 to 43 (of 43 products)
1 2 3
Black Friday Sale
M03
Product Information
Product Information
Rennline Stainless Steel Alternator Strap.

Fits:
Porsche 911/930 All 1965-89

We have redesigned our alternator straps for a sleeker look and simpler install. On most older 911's, the cadmium-plated alternator housing strap looks worse for the wear - the plating has become dull or corroded. The factory alternator housing strap can't be replaced without removing the ignition distributor, which necessitates resetting the engine's timing. Rennline's new alternator housing strap solves both problems: the brushed stainless steel perforated strap can be left as is or painted the color of your choice, and its unique 3 piece design makes installation easy to accomplish without touching the distributor. Comes with stainless steel hardware.

Note: Pictures may not show actual product.

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M03
96410625120
90110625102
90110625103

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Special Order item
53909314
Product Information
Product Information
Shim washer for generator belt pulley.
sold each.

Fits:
Porsche 912 Early 
Porsche 356 all models

*** On late 912 models with larger 420W generator also used for the impeller side). In total there should always be 10 used on the pulley side.

Diagram ref no 42

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53909314
53909314

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Black Friday Sale
53909314/1
Product Information
Product Information
Shim washer for generator belt pulley.
sold each.

Fits:
Porsche 912 Early 
Porsche 356 all models

*** On late 912 models with larger 420W generator also used for the impeller side). In total there should always be 10 used on the pulley side.

Diagram ref no 42

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53909314
53909314

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Special Order item
PCG10630601
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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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Black Friday Sale
61610612500/1
Product Information
Product Information
Spacer ring between generator and fan housing.
This gasket is for the fan housing (blower casing) and cover interface on classic Porsche 356 (B/C) and Porsche 912 models. The spacer ring ensures proper clearance, sealing and alignment between the main fan housing and the cover plate. Manufactured to replicate the original Porsche part in size and thickness. 

Fits:
Porsche 912  1965 - 1969
Porsche 356 B / C 1960 - 1965

Diagram ref no 45

 Position on Vehicle: Engine bay – between fan housing (blower shroud) and fan cover / generator mounting to body or engine casing.

Function: Maintains correct spacing, alignment and sealing of the fan housing, ensuring air-flows correctly through the engine’s cooling blower system, helping preserve engine temperature regulation and reduce vibration or mis-alignment.

Even though small, the spacer ring plays a crucial role in the cooling system geometry. If the original spacer is missing, crushed, incorrect thickness or degraded, you may experience:
  Mis-aligned fan housing or blower which can lead to inefficient airflow or overheating
  Vibration, noise or abnormal fan behaviour due to improper clearance
  Premature wear of fan shroud, generator or other components if clearance is incorrect
  Difficulty achieving correct engine temperature control or unstable idle-temperature behaviour.

Replacing with this spacer ensures the fan housing retains correct alignment, airflow is maintained as designed and cooling performance remains reliable.

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61610612500
61610612500

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Black Friday Sale
99950731212/1::1
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Product Information
Speed nut clip - air intake guide / rear bumper cover mounting.
A high-quality M5 captive speed nut designed for secures components such as the air intake guide and rear bumper cover mounting on the Porsche 928. This speed nut replicates Porsche’s original fastening standard, ensuring correct thread size, retainer design and installation fit.
Sold each.

Fits:
Porsche 928 1987 - 1995

Thread size: M5
 Application: air intake guide (diagram ref no 8) and rear bumper cover mounting (diagram ref no 22)

This speed nut provides a secure, vibration-resistant anchoring point for parts that require frequent removal or tight fit-up. The captive design ensures the nut remains in position during assembly and removal processes, reducing fastener loss and ensuring consistent mount integrity.

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99950731212
99950731212

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AKFANSTRAP
Product Information
Product Information
Stainless-steel fan hold-down strap.
Laser cut design: Square Holes with Motor Size 

Fits:
Porsche 911 Air-cooled 1965 - 1989

Upgrade the look and function of your engine bay with a stainless-steel fan hold-down strap. The standard alternator/fabs strap is an eye sore on most engines, class up your build with standard lettering or let us create a custom design just for you. All stainless steel construction and all stainless hardware needed to install is included. 

Please note: This part is on special order terms. It is not a subject to cancellation or return if not required.


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AKFANSTRAP
90110625102
90110625103
96410625120

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Black Friday Sale
54606069/1
Product Information
Product Information
Thermostat connecting rod lower. 


Fits:
Porsche 356 Pre A - 1950 to 1955
Porsche 356A - 1955 to 1959
Porsche 356B - 1959 to 1963
Porsche 356C - 1963 to 1959
Porsche  912

Thermostat operating block in stainless steel

Diagram ref no 21



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54606069
54606069
546 06069

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Black Friday Sale
54606591/1
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Thermostat connecting rod upper. 


Fits:
Porsche 356 Pre A - 1950 to 1955
Porsche 356A - 1955 to 1959
Porsche 356B - 1959 to 1963
Porsche 356C - 1963 to 1959
Porsche  912

Diagram ref no 20



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54606591
54606591
546 06591

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Special Order item
5460606
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Product Information
Ventilation tube.
This tube directs warm air into the intake area of the carburettor and can be used for the Porsche 356 from model years 1950 to 1965 as well as the Porsche 912 from model years 1965 to 1969. The ventilation tube shown here is for the right side.

Fits:
Porsche 356 / A / B / C 1950 - 1965
Porsche 912 1965 - 1969

Diagram ref no 34.

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5460606
54606063
54606064

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54606203/1
Product Information
Product Information
Washer set for Generator cooling fan. Set of 3 ring 0.5 - 1.0 - 3.0 mm to correctly adjust the cooling fan on the hub. Fits all 350W and 420W Generators 6V and 12V. Laser cut and zinc plated.

Fits:
Porsche 356 All
Porsche 912 <<69

Diagram ref no 7

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54606203
54606203

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DISPLAYING 33 to 43 (of 43 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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