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O-ring seal water pipe. Porsche 987 Boxster / 987 Cayman - 99610680107
99610680107/1
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Information
O ring seal water pipe, 39.3 x 3.53 mm
This OE Match O-ring seal is a replacement coolant pipe sealing ring used within the engine cooling system. It is designed to match the original-style fitment and function, helping restore a secure seal at the water pipe joint.
Sold individually
Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Diagram ref no 39
The O-ring seals the water pipe connection to prevent coolant seepage or pressure loss. A correctly fitted seal helps maintain cooling system integrity, stable coolant circulation, and reliable engine temperature control.
Functions
• Replaces the water pipe O-ring seal
• Seals the coolant / water pipe connection
• Helps prevent coolant leaks and seepage
• Supports correct cooling system pressure
• Suitable for water pipe, thermostat, radiator hose, or coolant system service
• Replaces hardened, flattened, cracked, swollen, or damaged
• O-rings OE Match replacement for Porsche 987 cooling system repair
Why Replace This Part?
Coolant O-rings can harden, flatten, crack, swell, or lose sealing ability due to heat cycles, coolant exposure, pressure, age, and previous service work. A worn or damaged O-ring may cause coolant leaks, low coolant warnings, pressure loss, overheating, or residue around the pipe connection. Replacing the seal helps restore proper coolant system sealing.
When to Replace This Part
• Coolant is leaking around the water pipe connection
• The water pipe or related hose has been removed
• The original O-ring is hard, flattened, cracked, swollen, or damaged
• Cooling system pressure loss is being investigated
• Low coolant warnings are present
• Preventative replacement is required during cooling system service
• The vehicle is undergoing Porsche 987 Boxster or Cayman cooling system repair
Where it fits on the car
This O-ring fits at the water pipe connection within the engine cooling system on Porsche 987 Boxster and Cayman models. Exact position can vary depending on engine type and coolant pipe layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610680107
The product you are viewing cross references to these numbers
This OE Match O-ring seal is a replacement coolant pipe sealing ring used within the engine cooling system. It is designed to match the original-style fitment and function, helping restore a secure seal at the water pipe joint.
Sold individually
Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Diagram ref no 39
The O-ring seals the water pipe connection to prevent coolant seepage or pressure loss. A correctly fitted seal helps maintain cooling system integrity, stable coolant circulation, and reliable engine temperature control.
Functions
• Replaces the water pipe O-ring seal
• Seals the coolant / water pipe connection
• Helps prevent coolant leaks and seepage
• Supports correct cooling system pressure
• Suitable for water pipe, thermostat, radiator hose, or coolant system service
• Replaces hardened, flattened, cracked, swollen, or damaged
• O-rings OE Match replacement for Porsche 987 cooling system repair
Why Replace This Part?
Coolant O-rings can harden, flatten, crack, swell, or lose sealing ability due to heat cycles, coolant exposure, pressure, age, and previous service work. A worn or damaged O-ring may cause coolant leaks, low coolant warnings, pressure loss, overheating, or residue around the pipe connection. Replacing the seal helps restore proper coolant system sealing.
When to Replace This Part
• Coolant is leaking around the water pipe connection
• The water pipe or related hose has been removed
• The original O-ring is hard, flattened, cracked, swollen, or damaged
• Cooling system pressure loss is being investigated
• Low coolant warnings are present
• Preventative replacement is required during cooling system service
• The vehicle is undergoing Porsche 987 Boxster or Cayman cooling system repair
Where it fits on the car
This O-ring fits at the water pipe connection within the engine cooling system on Porsche 987 Boxster and Cayman models. Exact position can vary depending on engine type and coolant pipe layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610680107
99610680107
The product you are viewing cross references to these numbers
Price: €5.00
In stock
Related products
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
Information
Water hose, from main return pipe to connecting pipe for radiator hose.
This OE Match radiator return hose is a direct replacement part, manufactured to original specifications for precise fitment and durability. It is installed in the lower section of the cooling system, linking the radiator to the main return pipe or connecting pipe.
Sold each
Fits:
Porsche 986 Boxster 1998 - 2004
Diagram ref no 9
• Position: Lower radiator return hose (left or right side)
• Quantity: Sold individually (2 required per vehicle)
• It replaces earlier part numbers including 99610662701 and 99610662702.
The hose transports coolant from the radiator back into the cooling circuit, helping regulate engine temperature. It ensures that heat absorbed by the coolant is properly dissipated and recirculated through the system.
A properly functioning hose is essential for maintaining stable engine temperatures and preventing overheating.
Over time, coolant hoses can become brittle, crack, or degrade due to heat and pressure. A failing hose can lead to coolant leaks, overheating, and potential engine damage. Replacing worn hoses ensures proper coolant flow, protects the engine, and maintains reliable cooling system performance.
When to replace
• Coolant leaks or visible hose damage
• Cracks, swelling, or soft spots in hose
• Engine overheating or temperature fluctuations
• During cooling system service or overhaul
• Preventative maintenance on ageing vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662704
The product you are viewing cross references to these numbers
This OE Match radiator return hose is a direct replacement part, manufactured to original specifications for precise fitment and durability. It is installed in the lower section of the cooling system, linking the radiator to the main return pipe or connecting pipe.
Sold each
Fits:
Porsche 986 Boxster 1998 - 2004
Diagram ref no 9
• Position: Lower radiator return hose (left or right side)
• Quantity: Sold individually (2 required per vehicle)
• It replaces earlier part numbers including 99610662701 and 99610662702.
The hose transports coolant from the radiator back into the cooling circuit, helping regulate engine temperature. It ensures that heat absorbed by the coolant is properly dissipated and recirculated through the system.
A properly functioning hose is essential for maintaining stable engine temperatures and preventing overheating.
Over time, coolant hoses can become brittle, crack, or degrade due to heat and pressure. A failing hose can lead to coolant leaks, overheating, and potential engine damage. Replacing worn hoses ensures proper coolant flow, protects the engine, and maintains reliable cooling system performance.
When to replace
• Coolant leaks or visible hose damage
• Cracks, swelling, or soft spots in hose
• Engine overheating or temperature fluctuations
• During cooling system service or overhaul
• Preventative maintenance on ageing vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662704
99610662704
99610662702
99610662701
911612-032
The product you are viewing cross references to these numbers
Price: €10.65
In stock
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
Information
Right radiator water hose from main supply to connecting pipe.
Fits:
Porsche 986 Boxster 1998-04
Manual transmission ONLY
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662404
The product you are viewing cross references to these numbers
Fits:
Porsche 986 Boxster 1998-04
Manual transmission ONLY
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662404
99610662402
99610662404
The product you are viewing cross references to these numbers
Price: €17.85
In stock
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Information
Coolant hose, Fits from the main supply pipe to the connecting pipe, Right Upper.
Fits:
Porsche 986 Boxster 2001>> For tiptronic transmissions only
Porsche 986 Boxster S 3.2L 1999>>
Porsche 996 Carrera C2 3.4L / 3.6L 1997-05
Porsche 996 GT2 2000-05
Porsche 996 GT3 3.6L 1999-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662458
The product you are viewing cross references to these numbers
Fits:
Porsche 986 Boxster 2001>> For tiptronic transmissions only
Porsche 986 Boxster S 3.2L 1999>>
Porsche 996 Carrera C2 3.4L / 3.6L 1997-05
Porsche 996 GT2 2000-05
Porsche 996 GT3 3.6L 1999-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662458
99610662458
99610662453
99610662457
The product you are viewing cross references to these numbers
Price: €21.42
Arriving soon