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Water / Coolant Pumps

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DISPLAYING 1 to 5 (of 5 products)
Special Order item
90037817701
Product Information
Product Information
M6 x 30 hex. head bolt for multiple applications.

Sold individually. 

Fits:
Porsche 986 Boxster 1997-04

Porsche 987-1 Boxster 2005-08
Porsche 987-1 Cayman 2005-08

Porsche 993 Carrera 1994-98
Porsche 993 Turbo 1995-98

Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Porsche 996 GT3 1999-05

Porsche Carrera GT 2004-06

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Related, superseded, cross reference or alternative numbers for comparison.

90037817701
90037817701
90037817709
90037811609
90037801409

The product you are viewing cross references to these numbers
90037817701/1
Product Information
Product Information
M6 x 30 hex. head bolt for multiple applications.

Sold individually. 

Fits:
Porsche 986 Boxster 1997-04

Porsche 987-1 Boxster 2005-08
Porsche 987-1 Cayman 2005-08

Porsche 993 Carrera 1994-98
Porsche 993 Turbo 1995-98

Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Porsche 996 GT3 1999-05

Porsche Carrera GT 2004-06

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Related, superseded, cross reference or alternative numbers for comparison.

90037817701
90037817701
90037817709
90037811609
90037801409

The product you are viewing cross references to these numbers
9971062258A/2
Product Information
Product Information
Thermostat Insert, 82°C.
The OE MATCH 82°C Thermostat Insert is a replacement engine cooling-system component designed to regulate coolant circulation according to engine temperature. It helps the engine warm up efficiently while allowing increased coolant flow through the cooling system as operating temperature rises.

Fits:
  • Porsche Carrera GT 2003-06

Diagram Ref No 2

Rated at 82°C, this thermostat insert is designed for compatible applications requiring this temperature specification. Correct thermostat operation is essential for maintaining stable coolant temperatures and protecting the engine from excessive heat.

What This Product Does:

The thermostat insert functions as a temperature-controlled valve within the engine cooling system.

When the engine is cold, the thermostat restricts coolant circulation through the radiator, helping the engine reach its intended operating temperature efficiently.

As coolant temperature rises towards the thermostat's specified operating range, the thermostat begins to open. This allows increased coolant circulation through the radiator so excess heat can be removed.

A correctly functioning 82°C thermostat insert helps:

  • Regulate coolant circulation
  • Control engine operating temperature
  • Promote efficient engine warm-up
  • Increase radiator flow as coolant temperature rises
  • Prevent unnecessary overcooling
  • Reduce the risk of excessive engine temperatures
  • Maintain consistent cooling-system operation
  • Support dependable engine performance

Symptoms Of Wear Or Failure:

Thermostats operate continuously through repeated heating and cooling cycles. Over time, the internal mechanism can become sluggish, stick in one position or fail to open and close correctly.

Common symptoms include:

  • Engine overheating
  • Engine running hotter than expected
  • Temperature gauge readings fluctuating
  • Sudden increases in coolant temperature
  • Engine taking unusually long to warm up
  • Engine consistently running too cool
  • Poor or inconsistent cabin heater performance
  • Cooling fans operating more frequently than normal
  • Coolant temperature warning messages
  • Reduced fuel efficiencyInconsistent engine operating temperature

These symptoms can vary depending on whether the thermostat has become stuck closed, stuck open or partially restricted.

Why Replacement Matters:
Correct engine temperature is essential for performance, efficiency and long-term engine reliability.

The thermostat provides the balance between rapid warm-up and effective cooling. Once it can no longer regulate coolant flow accurately, the engine may operate outside its intended temperature range.

Replacing a worn or defective thermostat insert helps restore:

  • Controlled coolant circulation
  • Stable engine operating temperature
  • Effective radiator cooling
  • Predictable engine warm-up
  • Consistent cabin heater performance
  • Efficient engine operation
  • Protection against overheating

Ignoring a malfunctioning thermostat can place unnecessary stress on other cooling-system components and, in severe overheating situations, may lead to significantly more expensive engine repairs.



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

9971062258A
9971062258A
98010612501
98010612503

The product you are viewing cross references to these numbers
Special Order item
9971062258A
Product Information
Product Information
Thermostat insert.

porsche

Hella ref no 8MT 358 083-061

Fits:
Porsche Carrera GT 2004-06

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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

9971062258A
9971062258A
8MT358083061
9971062258A
98010612501
98010612503

The product you are viewing cross references to these numbers
9971062258A/1
Product Information
Product Information
Thermostat insert.

mahle

Fits:
Porsche Carrera GT 2004-06

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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

9971062258A
9971062258A
8MT 358 083-061
8MT358083061
9971062258A
98010612501
98010612503

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
About Water / Coolant Pumps

Water / Coolant Pumps – Reliable Engine Cooling for Porsche Vehicles

Water / coolant pumps are at the heart of your Porsche’s cooling system. Their job is to circulate coolant through the engine, radiator, and heater core, maintaining the correct operating temperature and preventing overheating. A properly functioning water pump ensures efficient heat transfer, optimal performance, and long-term engine reliability.

At Design911, we supply a wide range of genuine and high-quality water pumps for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and the transaxle cars. Each pump is precision-engineered to deliver consistent coolant flow, high durability, and dependable performance - ensuring your Porsche’s engine stays cool under all driving conditions.

What Do Water Coolant Pumps Do?

Water pumps are a critical part of your engine’s temperature control system. They:

  • Circulate coolant between the engine block, radiator, and heater system.
  • Regulate temperature by dispersing heat efficiently throughout the system.
  • Maintain coolant pressure for consistent engine operation.
  • Support performance and longevity, preventing damage from excessive heat.

Without a properly working water pump, coolant circulation stops — leading to overheating, loss of performance, and potential engine failure.

Why Do Water Coolant Pumps Fail?

Even the most durable water pumps can fail over time due to heat, age, and coolant contamination. Common causes of failure include:

  • Bearing wear or seal leaks caused by prolonged use or poor coolant quality.
  • Corrosion or pitting from old or incompatible coolant mixtures.
  • Cracked impellers or worn components reducing flow efficiency.
  • Coolant leaks around the housing or pulley.
  • Age-related wear, especially in high-mileage vehicles.

Signs of failure include visible coolant leaks, high engine temperature, whining noises from the pump area, or reduced cabin heating.

Why Replace a Faulty Water Coolant Pump?

A failing water pump can cause severe engine overheating, loss of coolant, or total breakdown. Replacing a worn pump restores reliable cooling and helps protect your engine from costly damage.

Benefits of replacement include:

  • Restored coolant circulation and cooling efficiency.
  • Improved engine reliability and performance.
  • Prevention of leaks, overheating, and corrosion.
  • Long-lasting, high-quality construction for dependable operation.

All water pumps in this range are built using high-strength materials, precision impellers, and sealed bearings designed to deliver durability, quiet operation, and efficient coolant flow over time.


Porsche Water Pumps: Common Issues, Fixes, and Upgrades #porsche #porscheparts #porscheupgrade

In this tech talk, Lawrence from Design 911 breaks down everything you need to know about water pumps for Porsche models. From the iconic 911 to the Cayenne and Macan, discover why the water pump is one of the most crucial components in your car’s cooling system. 

Learn how water pumps work, the common signs of failure, and why regular replacement is essential to avoid catastrophic engine damage.

Whether you're maintaining your Porsche or considering a water pump upgrade, this video covers original and aftermarket options, as well as the pros and cons of plastic vs. metal impellers. Watch now to keep your Porsche running at its best!
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