Porsche > Cayman 718C (982C) 2017>> > Cayman T 718 2.0L PDK (300 Bhp) > Engine Cooling > Coolant Hoses and Pipes > Coolant Hoses - Centre Section >

Cayman 2000-08

Water Hose, Supply. Porsche 986 Boxster / 987 Boxster / Cayman 2000-08 - 99610621212

3 3 3

Porsche

99610621212

Product Information

Water Hose, Supply.
Restore the core coolant routing of your Porsche with this genuine OEM water hose. This 3-way supply hose is designed for models such as the Porsche Boxster (2000-2008) and Porsche Cayman (2006-2008) with automatic Tiptronic transmission. Engineered to Porsche’s exact specifications, this hose ensures correct coolant flow, high durability under heat and pressure, and a perfect fit.

Fits:

Porsche Boxster 986 2.7L 2000-02
Porsche Boxster S 986 3.2L 2000-02
Porsche Boxster 986 2.7L 2003-04
Porsche Boxster S 986 3.2L 2003-04
Porsche Boxster 987 2.7L 2005 -08/08
Porsche Boxster 987 S 3.2/3.4L 2005-08/08
Porsche Cayman 2.7L 987C 2006-08
Porsche Cayman S 3.4L 987C 2005-08

Cars With Option Codes:
249 - Tiptronic Transmission

Diagram Ref No 5

What This Product Does:

This water hose is part of the engine cooling system — it routes coolant between components of the cooling circuit (likely between the water pump / oil cooler / radiator or similar) doing a “3-way” path.
It ensures coolant flows properly, helping regulate engine temperature, protect components from overheating, and maintain correct thermal management.
Because modern Porsche engines operate with tight tolerances and high performance, correct hose routing, quality of hose material, and correct diameter are important to avoid flow restrictions, leaks or hose collapse.

Symptoms Of Wear / Damage / When To Replace:

Visible cracking, bulging, swelling or hose softening at clamps or along the hose length — hose material degrades with heat, age and coolant exposure.
Coolant leaks around the hose or hose clamps — signs of coolant around the hose, white or green crust, or low coolant level without obvious reason.
Overheating or elevated engine temperatures — if a hose is degraded or collapsed, it can restrict flow and reduce cooling system efficiency.
During engine work: If you’re already removing parts of the cooling system (water pump, oil cooler, hoses) and the hose looks old, it’s sensible to replace this unit to avoid future failure.

Why Replacement Matters:

Ensuring coolant integrity and flow: A failing hose can compromise coolant flow and temperature regulation, potentially leading to serious engine damage.
Prevents unexpected breakdowns: Considering the cost of engine damage, or expenses related to overheating, replacing aged hoses is cost-effective preventive maintenance.
Supports longevity and reliability: Especially in performance vehicles like Boxster/Cayman, cooling system maintenance matters for engine life, performance consistency and resale value.
Saves labour in the long term: Since many cooling hoses are hidden or routed behind other components, replacing while you have access prevents having to revisit the job later.

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

99610621212

99610621212

99610621210

99610621206

The product you are viewing cross references to these numbers

Related products

                                
                                            3 
                                            3 
                                            3 
                            
                            Engine coolant overflow hose. Porsche 991 / Boxster / Cayman
                        
                        99110676703
                    
Product InformationProduct Information

                            Engine coolant overflow hose.

Fits:
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Porsche 982 (718) Boxster 2017>>
Porsche 982C (718C) Cayman 2017>>
Porsche 991.1 Carrera 2012-16
Porsche 991.2 Carrera 2017-18
Porsche 991 Turbo 2014-18
Porsche 991 GT3 2014-18

Click 'Zoom in' for large parts diagram.
Diagram ref no 28

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

99110676703
 99110676703

The product you are viewing cross references to these numbers 
                        
                                            4 
                                            4 
                                            4 
                                            4 
                            
                            Coolant hose. Porsche 991 / Boxster / Cayman
                        
                        99110655101
                    
Product InformationProduct Information

                            Coolant hose. Sold each.

Fits:
Porsche 991.1 2012-16
Porsche 991.2 2017-19
Porsche 991 Turbo 2014-20
Porsche 991 GT3 2014-21
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 982 Boxster 2017>>
Porsche 982 Boxster Spyder 2019>>
Porsche 981C Cayman 2013-16
Porsche 981C Cayman 2016
Porsche 982C Cayman 2017>>
Porsche 982C Cayman GT4 2019>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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

99110655101
 99110655101

The product you are viewing cross references to these numbers 
                        
                                            6 
                                            6 
                                            6 
                                            6 
                                            6 
                                            6 
                            
                            Front Coolant Hose - Connects Metal Distributor Tube to Crossover Pipe. Porsche 981 / 982 (718) / 991
                        
                        99110672
                    
Product InformationProduct Information

                            Front coolant hose - connects metal distributor tube to crossover pipe.

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

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

Porsche 991.1 & 991.2 Carrera 2012-19
Porsche 991 Turbo / S / GT2 RS 2014-20
Porsche 991 GT3 / RS 2014-21

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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

99110672
 99110672300

The product you are viewing cross references to these numbers

Enter your VAT number here and click Verify:

Water Hose, Supply. Porsche 986 Boxster / 987 Boxster / Cayman 2000-08