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Coolant Return Hose. Porsche 997.1 Carrera 2005-08 - 99710683204
99710683204
Vehicle Group
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Information
Coolant Return Hose, Return hose at the thermostat housing.
This original Porsche coolant hose forms part of the engine cooling system, helping return coolant through the cooling circuit and maintain correct engine operating temperature.
Fits:
Porsche 997.1 C2 / C2S 2005 - 2008
Porsche 997.1 C4 / C4S 2005 - 2008
Diagram ref no 15
This hose is used in the water pump / thermostat housing area on selected Porsche 997.1 models.
What This Part Does / Functions:
• Routes coolant through the return side of the cooling system
• Connects at the thermostat housing area where specified
• Helps maintain correct coolant circulation and engine temperature control
• Supports proper cooling system pressure and flow
• Replaces a cracked, swollen, leaking or heat-damaged original hose
• Helps prevent coolant loss and overheating risk
• Provides correct Genuine Porsche hose shape, material and connection fitment
• Supports reliable factory cooling system performance.
Why Replace This Part?
Coolant hoses are exposed to heat cycles, coolant pressure, engine bay temperatures, vibration and age-related rubber deterioration. Over time, the hose can harden, swell, crack, split or leak. A failing coolant return hose may cause coolant loss, low coolant warnings, overheating risk or visible coolant residue around the thermostat housing.
Replacing it with a Genuine Porsche coolant return hose helps restore the correct factory coolant routing and reliable cooling system sealing.
Common Symptoms of a Faulty Coolant Return Hose
• Coolant leak around the thermostat housing
• Dried coolant residue around the hose connections
• Low coolant warning
• Coolant smell from the rear engine bay
• Engine temperature rising above normal
• Hose swelling, cracking or softening
• Cooling system pressure loss
• Damage found during cooling system inspection.
When to Replace This Part
• If the original hose is cracked, swollen, leaking or damaged
• During thermostat housing or water pump service
• During cooling system overhaul
• When replacing related coolant pipes, hoses or clamps
• If coolant loss is traced to the return hose
• After engine bay service where the hose has been disturbed
• If the hose has become brittle, soft or oil-contaminated
Where It Fits on the Car
This hose fits in the engine cooling / water cooling system at the thermostat housing area. It is identified as the coolant return hose / water hose return line and is shown in Porsche cooling diagrams as diagram reference no. 15.
Correct routing, clamp positioning and sealing are important to prevent coolant leaks and maintain proper cooling system operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710683204
The product you are viewing cross references to these numbers
This original Porsche coolant hose forms part of the engine cooling system, helping return coolant through the cooling circuit and maintain correct engine operating temperature.
Fits:
Porsche 997.1 C2 / C2S 2005 - 2008
Porsche 997.1 C4 / C4S 2005 - 2008
Diagram ref no 15
This hose is used in the water pump / thermostat housing area on selected Porsche 997.1 models.
What This Part Does / Functions:
• Routes coolant through the return side of the cooling system
• Connects at the thermostat housing area where specified
• Helps maintain correct coolant circulation and engine temperature control
• Supports proper cooling system pressure and flow
• Replaces a cracked, swollen, leaking or heat-damaged original hose
• Helps prevent coolant loss and overheating risk
• Provides correct Genuine Porsche hose shape, material and connection fitment
• Supports reliable factory cooling system performance.
Why Replace This Part?
Coolant hoses are exposed to heat cycles, coolant pressure, engine bay temperatures, vibration and age-related rubber deterioration. Over time, the hose can harden, swell, crack, split or leak. A failing coolant return hose may cause coolant loss, low coolant warnings, overheating risk or visible coolant residue around the thermostat housing.
Replacing it with a Genuine Porsche coolant return hose helps restore the correct factory coolant routing and reliable cooling system sealing.
Common Symptoms of a Faulty Coolant Return Hose
• Coolant leak around the thermostat housing
• Dried coolant residue around the hose connections
• Low coolant warning
• Coolant smell from the rear engine bay
• Engine temperature rising above normal
• Hose swelling, cracking or softening
• Cooling system pressure loss
• Damage found during cooling system inspection.
When to Replace This Part
• If the original hose is cracked, swollen, leaking or damaged
• During thermostat housing or water pump service
• During cooling system overhaul
• When replacing related coolant pipes, hoses or clamps
• If coolant loss is traced to the return hose
• After engine bay service where the hose has been disturbed
• If the hose has become brittle, soft or oil-contaminated
Where It Fits on the Car
This hose fits in the engine cooling / water cooling system at the thermostat housing area. It is identified as the coolant return hose / water hose return line and is shown in Porsche cooling diagrams as diagram reference no. 15.
Correct routing, clamp positioning and sealing are important to prevent coolant leaks and maintain proper cooling system operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710683204
99710683204
99710683203
The product you are viewing cross references to these numbers
Price: €83.38
In stock
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Vehicle Group
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Information
Distributor for coolant, Complete.
Fits:
Porsche 997.2 Carrera 2009-12
Porsche 997.2 Turbo 2010-13
Porsche 991.1 Carrera 2012-16
Porsche 991.2 Carrera 2017-19
Porsche 991 Turbo 2014-20
Porsche 992.1 Carrera 2019>>
Porsche 992 Turbo / Turbo S 2020>>
Porsche 987.2 Boxster 2.9L / 3.4L 2009-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 982 (718) Boxster GTS 4.0L 2017>>
Porsche 982 (718) Boxster Spyder 2019>>
Porsche 987C.2 Cayman 2.9L / 3.4L 2009-12
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Porsche 982C (718C) Cayman GTS 4.0L 2017>>
Porsche 982C (718C) Cayman GT4 2019>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB121187
The product you are viewing cross references to these numbers
Fits:
Porsche 997.2 Carrera 2009-12
Porsche 997.2 Turbo 2010-13
Porsche 991.1 Carrera 2012-16
Porsche 991.2 Carrera 2017-19
Porsche 991 Turbo 2014-20
Porsche 992.1 Carrera 2019>>
Porsche 992 Turbo / Turbo S 2020>>
Porsche 987.2 Boxster 2.9L / 3.4L 2009-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 982 (718) Boxster GTS 4.0L 2017>>
Porsche 982 (718) Boxster Spyder 2019>>
Porsche 987C.2 Cayman 2.9L / 3.4L 2009-12
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Porsche 982C (718C) Cayman GTS 4.0L 2017>>
Porsche 982C (718C) Cayman GT4 2019>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
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0PB121187
0PB121187
9A110601000
9A110601001
9A110601002
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Price: €65.95
In stock
Vehicle Group
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Speedster 4.0L 2019-24
Information
Water coolant connector piece.
Fits:
Porsche 992.1 Carrera 2019-24
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB121131G
The product you are viewing cross references to these numbers
Fits:
Porsche 992.1 Carrera 2019-24
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
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0PB121131G
0PB121131A
0PB121131G
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Price: €78.62
Orderable
Vehicle Group
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- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
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- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Information
Water coolant control valve.
Fits:
Porsche 992.1 Carrera 2019-24
Porsche 992 Turbo 2020-24
Porsche 982 (718) Boxster GTS 4.0L 2017>
Porsche 982 (718) Boxster Spyder 2019>
Porsche 982C (718) Cayman GTS 4.0L 2017>
Porsche 982C (718) Cayman GT4 2019>
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB121959A
The product you are viewing cross references to these numbers
Fits:
Porsche 992.1 Carrera 2019-24
Porsche 992 Turbo 2020-24
Porsche 982 (718) Boxster GTS 4.0L 2017>
Porsche 982 (718) Boxster Spyder 2019>
Porsche 982C (718) Cayman GTS 4.0L 2017>
Porsche 982C (718) Cayman GT4 2019>
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
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