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Your Vehicle  //  Porsche  //  Boxster 986/987/981 (1997-2016)  //  Any
PorscheBoxster 986/987/981 (1997-2016)Engine CoolingCoolant Hoses and Pipes (Rear engine cars)

Hose Clips / Screws / Brackets and Fixings

Hose Clips / Screws / Brackets and Fixings

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DISPLAYING 1 to 16 (of 35 products)
1 2 3
Bolt, Hex Head M6 x 25. Porsche 986 / 987 Boxster / Cayman / 997 - 90037801301, 90037801309 - SEFS-M6-25-A2
3
Bolt, Hex Head M6 x 25. Porsche 986 / 987 Boxster / Cayman / 997
90037801301/1::1
Product Information
Product Information
Hex head bolt M6x25 with various applications
Sold each


Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012
Porsche 993 - 1994 to 1998
Porsche 997 - 2005 to 2012



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Related, superseded, cross reference or alternative numbers for comparison.

90037801301
90037801301
90037801309

The product you are viewing cross references to these numbers
Bolt, Hex Head M6 x 25. Porsche 986 / 987 Boxster / Cayman / 997 - 90037801301, 90037801309
2
Bolt, Hex Head M6 x 25. Porsche 986 / 987 Boxster / Cayman / 997
Special Order item
90037801301::1
Product Information
Product Information
Hex head bolt M6x25 with various applications
Sold each

Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012
Porsche 993 - 1994 to 1998
Porsche 997 - 2005 to 2012



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Related, superseded, cross reference or alternative numbers for comparison.

90037801301
90037801301
90037801309

The product you are viewing cross references to these numbers
Coolant Hose Bracket. Porsche 987 Boxster / Cayman 2005-08 - 98710642501, 98710642500
3
Coolant Hose Bracket. Porsche 987 Boxster / Cayman 2005-08
Special Order item
98710642501
Product Information
Product Information
Coolant Hose Bracket.

Fits:
Porsche 987 Boxster 2.7L M96.25 2004>>2006
Porsche 987 Boxster 3.2L M96.26 2004>>2006
Porsche 987 Boxster 2.7L M97.20 2006>>2008
Porsche 987 Boxster 3.4L M97.21 2006>>2008
Porsche 987 Boxster 3.4L M97.22 2007>>2008
Porsche 987 Cayman 2.7L M97.20 2006>>2008
Porsche 987 Cayman 3.4L M97.21 2005>>2008
Porsche 987 Cayman 3.4L M97.22 2007>>2008

Diagram Ref No 25

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Related, superseded, cross reference or alternative numbers for comparison.

98710642501
98710642501
98710642500

The product you are viewing cross references to these numbers
Coolant hose clamp. Porsche 997.1 / 997.2 / 987.1 / 987.2 Boxster & Cayman 2005–12 - 99710690200
3
Coolant hose clamp. Porsche 997.1 / 997.2 / 987.1 / 987.2 Boxster & Cayman 2005–12
Special Order item
99710690200
Product Information
Product Information
Coolant Hose Clamp
This clamp forms part of the radiator coolant hose assembly, helping secure the associated coolant hose connection and maintain a reliable seal within the cooling system.
Sold individually

Fits:
Porsche 987.1 Boxster / S 2005 - 2008
Porsche 987.2 Boxster / S 2009 - 2012
Porsche 987C.1 Cayman / S 2006 - 2008
Porsche 987C.2 Cayman / S 2009 - 2012
Porsche 997.1 Carrera 3.6L / 3.8L 2005 - 2008 CABRIO/COUPE
Porsche 997.2 Carrera 3.6L / 3.8L 2009 - 2010 CABRIO/COUPE

Diagram ref no 27.

Manufactured to Porsche's original specifications, this genuine replacement clamp provides precise fitment, durability and dependable fastening under the temperature changes, pressure and vibration experienced during normal vehicle operation.

Ideal for replacing worn, damaged or corroded original clamps during radiator repairs, coolant hose replacement or cooling system maintenance.

What Does This Part Do? – Functions
  • Secure Fastening: Helps hold coolant hose connections firmly in position.
  • Leak Prevention: Supports a secure connection to minimise coolant leakage.
  • Coolant System Reliability: Helps maintain the integrity of the radiator cooling circuit.
  • Vibration Resistance: Reduces the risk of hose connections becoming loose.
  • Original Fitment: Maintains factory-correct cooling system assembly.

Why Replace This Part?
Over time, coolant hose clamps may become corroded, weakened or damaged due to repeated temperature changes, moisture and vibration. A faulty clamp can compromise the hose connection, potentially resulting in coolant leakage and reduced cooling system reliability.

Replacing a worn or damaged clamp with a genuine Porsche component helps restore secure fastening, reduce the risk of coolant loss and maintain dependable engine cooling performance.

When to Replace This Part?
  • Coolant Leaks: Visible leakage around the hose connection.
  • Corrosion: Rust or deterioration affecting clamp strength.
  • Physical Damage: Bent, cracked or deformed clamp.
  • Loose Connection: Clamp no longer secures the hose correctly.
  • Cooling System Repairs: During radiator or coolant hose replacement.

Where Does It Fit on the Car?
Location: Cooling system – radiator coolant hose assembly.

The coolant hose clamp is installed at a designated connection within the radiator coolant hose arrangement, securing the associated hose and helping maintain a reliable cooling system connection.

It forms part of the coolant hose and pipework assembly on compatible Porsche 987 Boxster, Cayman and 997 Carrera models.

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

99710690200
99710690200

The product you are viewing cross references to these numbers
Coolant Hose Connecting Piece. Porsche 987 Boxster / 987C Cayman / 997 - 99710625502
4
Coolant Hose Connecting Piece. Porsche 987 Boxster / 987C Cayman / 997
Special Order item
99710625502
Product Information
Product Information
Coolant Hose Connecting Piece
This connecting piece forms part of the radiator coolant hose assembly, providing a secure connection between associated coolant hoses and pipework. It helps maintain an effective coolant circulation system, ensuring reliable coolant flow and supporting consistent engine temperature regulation.

Fits:
Porsche 987.1 Boxster / S 2005 - 2008
Porsche 987.2 Boxster / S 2009 - 2010
Porsche 987C.1 Cayman / S 2006 - 2008
Porsche 987C.2 Cayman / S 2009 - 2012
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 Carrera 2009 - 2012
Porsche 997.2 Turbo 2010 - 2013
Porsche 997 GT3 2007 - 2010

Diagram ref no 11

Manufactured to Porsche's original specifications, this genuine replacement connector offers precise fitment, durability and resistance to the temperature and pressure demands of the cooling system.

Ideal for replacing cracked, damaged or leaking original connectors during radiator repairs, coolant hose replacement or routine cooling system maintenance.

What Does This Part Do? – Functions
  • Secure Connection: Joins radiator coolant hoses and associated cooling system pipework.
  • Coolant Circulation: Supports consistent coolant flow through the radiator circuit.
  • Leak Prevention: Helps maintain a secure, leak-resistant connection.
  • Temperature Resistance: Designed to withstand normal cooling system temperatures and pressures.
  • Original Fitment: Maintains Porsche factory cooling system specifications.

Why Replace This Part?
Over time, coolant hose connecting pieces can become brittle, cracked or damaged due to repeated temperature changes, coolant pressure and ageing. A deteriorated connector may cause coolant leaks, pressure loss and reduced cooling system efficiency.

Replacing a damaged connector with a genuine Porsche component helps restore secure hose connections, reduce the risk of coolant loss and maintain reliable engine cooling performance.

When to Replace This Part?
  • Coolant Leaks: Visible coolant escaping around the connector.
  • Physical Damage: Cracked, broken or deformed connecting piece.
  • Poor Sealing: Loose or leaking coolant hose connections.
  • Material Deterioration: Signs of ageing, brittleness or damage.
  • Cooling System Repairs: During radiator or coolant hose replacement.

Where Does It Fit on the Car?
Location: Front cooling system – radiator coolant hose assembly.

The coolant hose connecting piece is installed within the radiator coolant pipework, joining the associated coolant hoses and helping maintain a secure connection between cooling system components. It forms part of the front radiator hose arrangement on compatible Porsche 987 and 997 models. 

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

99710625502
99710625502

The product you are viewing cross references to these numbers
Coolant pipe seal. Porsche Boxster / Cayman / 991 / 992 - 9A110621500, 0PB121437, 273.760
2
Coolant pipe seal. Porsche Boxster / Cayman / 991 / 992
0PB121437/1
Product Information
Product Information
Coolant pipe seal. Pipe to Water Pump & Thermostat Housing.

Fits:
Porsche 987.2 Boxster 2009-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 982 Boxster GTS 4.0 2019>>
Porsche 982 Boxster Spyder 2019>>
Porsche 987C Cayman 2009-12
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4
Porsche 982C Cayman GTS 4.0L 2019>>
Porsche 982C Cayman GT4 2019>>
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 991 GT3 1014>>
Porsche 992.1 Carrera 2020>>
Porsche 992 Turbo 2020>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

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

0PB121437
9A110621500
0PB121437
273.760

The product you are viewing cross references to these numbers
Hose clamp, 12-22 mm. Porsche 911 / 964 / 993 / 996 / 997 / 986 - 99951255400
1
Hose clamp, 12-22 mm. Porsche 911 / 964 / 993 / 996 / 997 / 986
Special Order item
99951255400
Product Information
Product Information
Hose clamp, 12-22 mm - Various Applications.

Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 986 Boxster - 1997 to 2004
Porsche 996 - 1997 to 2005
Porsche 997.1 - 2005 to 2008



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

99951255400
99951255400

The product you are viewing cross references to these numbers
M6 x 30 Hex. Head Bolt for Porsche 986 / 987-1 / 993 / 996 / Carrera GT - 90037817701, 90037817709, 90037811609, 90037801409
2
M6 x 30 Hex. Head Bolt for Porsche 986 / 987-1 / 993 / 996 / Carrera GT
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
M6 x 30 Hex. Head Bolt for Porsche 986 / 987-1 / 993 / 996 / Carrera GT - 90037817701, 90037817709, 90037811609, 90037801409
2
M6 x 30 Hex. Head Bolt for Porsche 986 / 987-1 / 993 / 996 / Carrera GT
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
Mounting Bush LOWER for Radiator. Porsche 981 / 718 Boxster / Spyder / 991 - 99110633200
3
Mounting Bush LOWER for Radiator. Porsche 981 / 718 Boxster / Spyder / 991
Special Order item
99110633200
Product Information
Product Information

Radiator Lower Mounting Bush
Sold each – 4 required per car

The radiator lower mounting bush 99110633101 is an essential component used to support and isolate the radiator within the cooling system of several modern Porsche models including the 981, 718 Boxster, 718 Cayman and the 991.

Fits:

  • 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 718 2.0L Manual (300 Bhp) 2017>>
  • Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
  • Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
  • Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
  • Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
  • Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
  • Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
  • Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
  • 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 / Sypder RS 718 4.0L 01/2019>>
  • Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
  • Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
  • 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 991.1 R 4.0L (500 Bhp) 2016
  • Porsche 991.1 GT3 3.8L (475 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 991.2 Speedster 4.0L (510Bhp) 2019
  • Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
  • Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
  • 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 718 2.0L Manual (300 Bhp)
  • Porsche Cayman 718 2.0L PDK (300 Bhp)
  • Porsche Cayman S 718 2.5L Manual (350 Bhp)
  • Porsche Cayman S 718 2.5L PDK (350 Bhp)
  • Porsche Cayman T 718 2.0L Manual (300 Bhp)
  • Porsche Cayman T 718 2.0L PDK (300 Bhp)
  • Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
  • Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
  • 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
  • Porsche Cayman GT4 Clubsport
  • Porsche Cayman GT4 RS Clubsport 2020-2024

Diagram Ref No 23  

Although small, this rubber mounting bush plays an important role in stabilising the radiator assembly while absorbing vibration and movement generated by the engine, road surface and cooling fans.

What This Radiator Mounting Bush Does

The lower radiator mounting bush sits between the radiator and the chassis mounting point. It helps secure the radiator in place while isolating vibration.

This component helps:

• Secure the radiator within the cooling system frame
• Absorb vibration and movement from the engine and road
• Prevent stress damage to the radiator housing
• Maintain proper radiator alignment with cooling ducts and fans

Without these bushes functioning correctly, the radiator may move excessively, leading to premature wear or cooling system issues.

Why Radiator Mounting Bushes Fail

Over time, rubber components within the engine bay are exposed to heat, moisture and road debris. This can cause the bush material to deteriorate.

Common causes of failure include:

Heat degradation
 Continuous exposure to engine bay temperatures can cause rubber to harden and crack.

Compression fatigue
 Years of supporting the radiator weight can flatten or weaken the bush.

Oil and coolant contamination
 Exposure to fluids may accelerate rubber deterioration.

General ageing
 Rubber components naturally degrade over time and lose elasticity.

Symptoms of a Worn Radiator Mount Bush

• Loose or unstable radiator positioning
• Rattling or vibration from the front cooling system area
• Visible cracking or deterioration of the rubber mount
• Radiator sitting lower or misaligned within the mount

Replacing worn mounting bushes restores proper support and reduces unwanted vibration in the cooling system.

Why You May Need to Replace This Part

Protect the Radiator Assembly
 A stable radiator prevents stress on coolant connections, hoses and fittings.

Reduce Vibration and Noise
 New bushes absorb vibration and prevent rattling from the radiator frame.

Prevent Cooling System Damage
 Loose radiators can lead to cracked plastic tanks, hose strain or coolant leaks.

Affordable Preventative Maintenance
 Replacing small rubber mounts during cooling system service or radiator replacement helps extend the life of the entire system.



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

99110633200
99110633200

The product you are viewing cross references to these numbers
Mounting Bush UPPER for Radiator. Porsche 981 / 718 Boxster / Spyder / 991 - 99110633101
3
Mounting Bush UPPER for Radiator. Porsche 981 / 718 Boxster / Spyder / 991
Special Order item
99110633101
Product Information
Product Information

Radiator Upper Mounting Bush
Sold each – 4 required per car

The radiator upper mounting bush 99110633101 is an essential component used to support and isolate the radiator within the cooling system of several modern Porsche models including the 981, 718 Boxster, 718 Cayman and the 991.

Fits:

  • 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 718 2.0L Manual (300 Bhp) 2017>>
  • Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
  • Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
  • Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
  • Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
  • Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
  • Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
  • Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
  • 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 / Sypder RS 718 4.0L 01/2019>>
  • Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
  • Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
  • 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 991.1 R 4.0L (500 Bhp) 2016
  • Porsche 991.1 GT3 3.8L (475 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 991.2 Speedster 4.0L (510Bhp) 2019
  • Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
  • Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
  • 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 718 2.0L Manual (300 Bhp)
  • Porsche Cayman 718 2.0L PDK (300 Bhp)
  • Porsche Cayman S 718 2.5L Manual (350 Bhp)
  • Porsche Cayman S 718 2.5L PDK (350 Bhp)
  • Porsche Cayman T 718 2.0L Manual (300 Bhp)
  • Porsche Cayman T 718 2.0L PDK (300 Bhp)
  • Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
  • Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
  • 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
  • Porsche Cayman GT4 Clubsport
  • Porsche Cayman GT4 RS Clubsport 2020-2024

Diagram Ref No 23  

Although small, this rubber mounting bush plays an important role in stabilising the radiator assembly while absorbing vibration and movement generated by the engine, road surface and cooling fans.

What This Radiator Mounting Bush Does

The upper radiator mounting bush sits between the radiator and the chassis mounting point. It helps secure the radiator in place while isolating vibration.

This component helps:

• Secure the radiator within the cooling system frame
• Absorb vibration and movement from the engine and road
• Prevent stress damage to the radiator housing
• Maintain proper radiator alignment with cooling ducts and fans

Without these bushes functioning correctly, the radiator may move excessively, leading to premature wear or cooling system issues.

Why Radiator Mounting Bushes Fail

Over time, rubber components within the engine bay are exposed to heat, moisture and road debris. This can cause the bush material to deteriorate.

Common causes of failure include:

Heat degradation
 Continuous exposure to engine bay temperatures can cause rubber to harden and crack.

Compression fatigue
 Years of supporting the radiator weight can flatten or weaken the bush.

Oil and coolant contamination
 Exposure to fluids may accelerate rubber deterioration.

General ageing
 Rubber components naturally degrade over time and lose elasticity.

Symptoms of a Worn Radiator Mount Bush

• Loose or unstable radiator positioning
• Rattling or vibration from the front cooling system area
• Visible cracking or deterioration of the rubber mount
• Radiator sitting lower or misaligned within the mount

Replacing worn mounting bushes restores proper support and reduces unwanted vibration in the cooling system.

Why You May Need to Replace This Part

Protect the Radiator Assembly
 A stable radiator prevents stress on coolant connections, hoses and fittings.

Reduce Vibration and Noise
 New bushes absorb vibration and prevent rattling from the radiator frame.

Prevent Cooling System Damage
 Loose radiators can lead to cracked plastic tanks, hose strain or coolant leaks.

Affordable Preventative Maintenance
 Replacing small rubber mounts during cooling system service or radiator replacement helps extend the life of the entire system.



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

99110633101
99110633101

The product you are viewing cross references to these numbers
Plastic Bracket - Supports Front Coolant Distributor Pipe. Porsche 981/718 (982) Boxster & Cayman / 991 Carrera & Turbo & GT3 - 99110641303
3
Plastic Bracket - Supports Front Coolant Distributor Pipe. Porsche 981/718 (982) Boxster & Cayman / 991 Carrera & Turbo & GT3
Special Order item
99110641303
Product Information
Product Information
Plastic bracket - supports front coolant distributor pipe. 

Sold separately; two units needed per vehicle. 

Fits:
Porsche 981 Boxster / S 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman / S 2014-16
Porsche 981 Cayman GT4 2016

Porsche 718 (982) Boxster / S 2017>>
Porsche 718 (982) Boxster Spyder 2019>>
Porsche 718 (982) Cayman / S 2017>> 
Porsche 718 (982) Cayman GT4 2019>>

Porsche 991 Carrera 2012-19
Porsche 991 Turbo/GT2 RS 2014-20
Porsche 991 GT3/GT3 RS 2014-21

Related reference numbers
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99110641303
99110641303

The product you are viewing cross references to these numbers
Plastic Support Bracket for Front Coolant Pipes. Porsche 981 / 718 (982) / 991
2
Plastic Support Bracket for Front Coolant Pipes. Porsche 981 / 718 (982) / 991
Special Order item
99110652502
Product Information
Product Information
Plastic support bracket for front coolant pipes. Sold individually; two required per vehicle.

Includes insert for M6 x 35 bolt (part number 90037814101).

Fits:
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman 2013-16
Porsche 981 Cayman GT4 2016

Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Boxster Spyder 2019>>
Porsche 718 (982) Cayman 2017>>
Porsche 718 (982) Cayman GT4 2019>>

Porsche 991 Carrera 2012-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 GT3 / GT3 RS / Speedster 2014-21
Plastic Support Bracket for Front Coolant Pipes. Porsche 981 / 718 (982) / 991
2
Plastic Support Bracket for Front Coolant Pipes. Porsche 981 / 718 (982) / 991
Special Order item
99110652702
Product Information
Product Information
Plastic support bracket for front coolant pipes. Sold individually; two required per vehicle.

Includes threaded insert for M6 x 20 bolt (part number 90037817301).

Fits:
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman 2013-16
Porsche 981 Cayman GT4 2016

Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Boxster Spyder 2019>>
Porsche 718 (982) Cayman 2017>>
Porsche 718 (982) Cayman GT4 2019>>

Porsche 991 Carrera 2012-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 GT3 / GT3 RS / Speedster 2014-21
Radiator hose retaining clamp. Porsche 997.1 / 997.2 / 987.1 / 987.2 Boxster & Cayman 2005–12 - 99751274201, 99710690100
2
Radiator hose retaining clamp. Porsche 997.1 / 997.2 / 987.1 / 987.2 Boxster & Cayman 2005–12
Special Order item
99751274201
Product Information
Product Information
Radiator hose retaining clamp
This retaining clamp is designed to secure the radiator coolant hose assembly in its correct position, helping maintain proper hose alignment and prevent unwanted movement within the cooling system.
Sold each

Fits:
Porsche 987.1 Boxster / S 2005 - 2008
Porsche 987.2 Boxster / S 2009 - 2012
Porsche 987C.1 Cayman / S 2006 - 2008
Porsche 987C.2 Cayman / S 2009 - 2012
Porsche 997.1 Carrera 3.6L /  3.8L 2005 - 2008 CABRIO/COUPE
Porsche 997.2 Carrera 3.6L /  3.8L  2009 - 2010 CABRIO/COUPE

Diagram ref no 

Designed to meet Porsche's original equipment specifications, this replacement component provides secure fastening and reliable support for the associated radiator hose connections.

Ideal for replacing worn, damaged or missing original clamps during radiator repairs, coolant hose replacement or cooling system maintenance.

Previous Porsche Part Number: 99710690100.

What Does This Part Do? – Functions
  • Secure Hose Retention: Helps hold radiator coolant hoses firmly in position.
  • Correct Alignment: Maintains proper positioning of associated cooling system connections.
  • Vibration Resistance: Reduces unwanted hose movement during vehicle operation.
  • Component Support: Helps protect hose connections from unnecessary mechanical stress.
  • Original Fitment: Supports factory-correct cooling system assembly.

Why Replace This Part?
Over time, radiator hose retaining clamps can become worn, weakened or damaged due to heat exposure, vibration and ageing. A damaged or missing clamp may allow excessive hose movement, potentially placing additional stress on the cooling system connections.

Replacing it with a genuine Porsche component helps restore secure hose retention, maintain correct alignment and support the reliability of the radiator cooling system.

When to Replace This Part?
  • Physical Damage: Cracked, broken or deformed retaining clamp.
  • Loose Hoses: Excessive movement around radiator hose connections.
  • Corrosion: Visible deterioration affecting clamp strength.
  • Missing Clamp: Original retaining component has been lost or removed.
  • Cooling System Repairs: During radiator or coolant hose replacement.

Where Does It Fit on the Car?
Location: Front cooling system – radiator coolant hose assembly.

The retaining clamp is installed within the front radiator assembly, securing the associated coolant hose connection in its designated position. It helps maintain correct hose routing and alignment around the radiator mounting area.

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

99751274201
99751274201
99710690100

The product you are viewing cross references to these numbers
Rubber isolator bush pipe mounting bracket. Porsche 986 / 987 / 996 / 997 - 99951123141
3
Rubber isolator bush pipe mounting bracket. Porsche 986 / 987 / 996 / 997
Special Order item
99951123141
Product Information
Product Information
Rubber isolator bush pipe mounting bracket. 
Sold each


Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987.2 Boxster - 2009 to 2012
Porsche 987.2 Cayman - 2009 to 2012
Porsche 996 - 1997 to 2005
Porsche 996 GT3 - 1999 to 2004
Porsche 997.1 / 997.2 - 2005 to 2012
Porsche 997 GT3 - 2007 to 2012

Used in various locations on air conditioning and water coolant solid pipes

Diagram ref no 36



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

99951123141
99951123141

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 35 products)
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Also found on these pages
About Hose Clips / Screws / Brackets and Fixings

Hose Clips, Screws, Brackets & Fixings for Reliable Coolant System Performance

Hose clips, screws, brackets and fixings are the essential hardware that keeps your coolant hoses, pipes and auxiliary lines securely in place. These compact but critical components maintain stable pressure, prevent coolant leaks, and ensure the entire cooling system functions efficiently under varying temperatures and engine loads. Whether you're upgrading cooling components, performing routine maintenance or completing a restoration project, dependable hose fixings are vital to long-term engine health.

What Hose Clips, Screws, Brackets & Fixings Do

Cooling systems operate under constant pressure and temperature fluctuations.

These fittings perform several key roles:

  • Securing coolant hoses and pipes to prevent movement, abrasion or disconnection
  • Maintaining a reliable seal against leaks and pressure drops
  • Supporting correct routing of hoses throughout the engine bay
  • Preventing vibration damage by keeping lines firmly positioned
  • Ensuring proper airflow and coolant flow by holding components safely in place

From simple worm-drive hose clamps to engineered brackets made for specific vehicle models, these components are designed to ensure stability and performance.

Why Hose Clips & Fixings Commonly Fail

Over time, coolant system fixings endure significant strain from heat cycles, vibration and coolant exposure.

Common reasons for failure include:

  • Corrosion due to moisture or coolant seepage
  • Material fatigue or weakened tension from age
  • Cracked or brittle brackets caused by heat stress
  • Over-tightening or incorrect installation leading to thread damage
  • Degraded rubber insulators on mounting brackets
  • Hose expansion causing clamps to loosen

When these components weaken, the system can no longer maintain proper pressure, often resulting in leaks, overheating, or hose detachment.

Why You Should Replace Worn Hose Clips & Fixings

Replacing worn or damaged fixings with high-quality, precision-made replacement components designed to match original performance levels ensures your cooling system remains secure, leak-free and efficient.

Benefits of replacing them include:

  • Restored clamping strength and sealing reliability
  • Reduced risk of coolant leaks and overheating
  • Proper alignment and support for coolant hoses and pipes
  • Improved durability under heat and vibration
  • Enhanced long-term cooling system resilience

Quality fixings are a small investment that protect major engine components, ensuring dependable performance in both daily driving and high-demand conditions.

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