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Water / Coolant Radiators

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DISPLAYING 17 to 21 (of 21 products)
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99970331000/1
Product Information
Product Information

Radiator Fan Mounting Rubber Buffer – Blower Grille Mount
Sold each - 2 required per car

High-quality rubber-metal mounting buffer designed for securing the radiator fan blower guard grille on Porsche 928 and 928S models (1980–1986).

This component acts as a vibration-damping mounting point, ensuring the blower guard grille and associated fan assembly are securely positioned while reducing vibration and noise within the cooling system.

Fits:

  • Porsche 928 4.5L 1980-82
  • Porsche 928S 4.7L 1981-83

Diagram ref no 6

Constructed using a durable rubber-metal bonded design, this mounting buffer is engineered to withstand engine bay temperatures, mechanical stress, and long-term use while maintaining flexibility and structural integrity.

A direct replacement part, this radiator fan mounting buffer is essential for maintaining proper cooling system stability and preventing unwanted movement or wear.

Reference Number: 99970331000

Key Features

• Direct replacement rubber-metal mounting buffer
• Suitable for Porsche 928 and 928S (1980–1986)
• Designed for radiator fan blower guard grille mounting
• Reduces vibration and noise within the cooling system
• Durable rubber-metal bonded construction
• OEM-style fit and function

Function and Purpose

This mounting buffer provides secure attachment and vibration isolation for the radiator fan assembly components.

It helps to:

• Stabilise the blower guard grille and fan assembly
• Reduce vibration transfer within the cooling system
• Minimise noise caused by component movement
• Protect surrounding components from wear and stress

Why Replace Your Radiator Fan Mounting Buffer

Over time, rubber-metal mounts can degrade due to heat and vibration.

Common issues include:

• Cracked or hardened rubber
• Reduced vibration damping performance
• Loose or unstable fan assembly components
• Increased noise or movement in the cooling system

Replacing the buffer restores proper mounting stability and cooling system performance.



Related reference numbers
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99970331000
99970331000

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Special Order item
PCG18701502::2
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Sheet metal screw B6,3x16
Fits water radiator to cowling.
Sold each.

porsche

Fits:
Porsche 928 1978-86

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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PCG18701502
PCG18701502
90018701502

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92810616300/1
Product Information
Product Information
Thermostat bottom seal Porsche 928 83-95

oematch

Fits:
Porsche 928 S 4.7L 1983-86
Porsche 928 S4 5.0L 1987-91
Porsche 928 GT 5.0L 1989-91
Porsche 928 GTS 5.4L 1992-95

Click picture for large parts diagram.
Diagram Ref No 33.

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92810616300
92810616300

The product you are viewing cross references to these numbers
Special Order item
PAF008434
Product Information
Product Information
Washer for rubber mount.  - Multiple applications

porsche

Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster - 2005 to 2012
Porsche 987 Cayman - 2006 to 2012
Porsche 996 - 1997 to 2004
Porsche 997 - 2005 to 2012
Porsche 991 - 2012 5o 2019



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

PAF008434
99902525501
99902525502
PAF008434

The product you are viewing cross references to these numbers
Special Order item
92864151300
Product Information
Product Information
Water radiator pressure switch.

Fits:
Porsche 928 1983 - 1995

Diagram ref no 8

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92864151300
92864151300

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DISPLAYING 17 to 21 (of 21 products)
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About Water / Coolant Radiators

Water Coolant Radiators – Efficient Cooling Performance for Porsche Engines

Water coolant radiators are the heart of your Porsche’s cooling system, responsible for maintaining the perfect balance between performance and engine temperature. These components dissipate heat from the coolant as it passes through the radiator core, ensuring your engine operates at peak efficiency while preventing overheating - whether you’re cruising through city streets or pushing hard on the track.

At Design911, we offer a comprehensive range of genuine and high-quality water coolant radiators for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and transaxle cars. Each radiator is precision-engineered to provide efficient heat exchange, corrosion resistance, and a perfect fit, ensuring long-lasting performance and reliability for every driving condition.

What Do Water Coolant Radiators Do?

Radiators are essential to your Porsche’s engine cooling system. Their primary functions include:

  • Transferring heat from the coolant to the surrounding air.
  • Regulating coolant temperature to prevent engine overheating.
  • Supporting overall thermal balance for performance and emissions efficiency.
  • Enhancing reliability by maintaining optimal operating temperatures in all climates.

By efficiently dissipating heat, radiators protect your engine, prevent premature wear, and maintain consistent performance under pressure.

Why Do Radiators Fail?

Despite being built for endurance, radiators experience constant thermal stress, exposure to pressure, and environmental elements that can lead to failure. Common causes include:

  • Corrosion or rust due to contaminated or old coolant.
  • Leaks from cracked tanks, damaged cores, or failing seals.
  • Blockages caused by debris or scale build-up inside coolant passages.
  • Physical damage from road debris or stone impacts.
  • Coolant contamination from oil or combustion residue.

Symptoms of radiator failure include overheating, coolant loss, visible leaks, or fluctuating temperature readings.

Why Replace a Faulty Radiator?

A damaged or inefficient radiator compromises your Porsche’s cooling system, risking overheating and potential engine damage. Replacing your radiator with a high-quality, manufacturer-standard unit ensures optimal cooling efficiency, reliability, and peace of mind.

Benefits of replacement include:
Restored cooling efficiency and heat dissipation.
Prevention of engine overheating and coolant loss.
Enhanced vehicle performance and fuel economy.
Durable, corrosion-resistant materials for long service life.

All radiators in our range are designed using premium aluminium cores, precision welds, and reinforced end tanks to ensure excellent cooling capacity, leak prevention, and long-term reliability — perfect for both standard and high-performance Porsche applications.

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