do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Accessories
- Brakes
- Chassis / Bodywork
- Clothing & Gifts
- Electrical & Relays
- Engine Cooling
- Engine Electrical
- Engine Rebuild Parts
- Engine Tuning
- Exhausts
- Exterior Styling / Spoilers
- Gearbox / Transmission
- Heating / Air Conditioning
- Hydraulics
- Incar / Multimedia
- Interior & Accessories
- Lighting
- Mats & Carpets
- Motorsport and Off-Road
- Parts for Other Cars
- Pedal Cluster
- Rubber Seals
- Seats & Seat Belts
- Service Parts
- Special Offer Parts
- Steering Parts
- Suspension & Axle
- Suspension Upgrades
- Tyres
- Wheel Accessories
- Wheels
Expansion Tank Hoses
The Breather Line is a genuine Porsche ventilation hose designed to support correct pressure regulation and airflow within the vehicle’s engine or cooling system ventilation circuit (depending on application). This line helps route trapped air or vapours through the correct system pathways, ensuring stable operation and preventing pressure build-up.
Fits:
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-14
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-14
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-14
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-14
Diagram Ref No 6
What This Product Does:
- Allowing trapped air or vapours to vent safely
- Maintaining stable system pressure
- Supporting efficient coolant or crankcase circulation (application dependent)
- Helping prevent pressure-related leaks
- Ensuring the system operates correctly without airlocks or restriction
Symptoms Of Wear Or Failure:
- Coolant or oil vapour leaks (depending on system type)
- Cracked, split, or brittle hose material
- Poor system bleeding or air trapped in the circuit
- Coolant loss or pressure issues
- Engine bay smells (coolant or oil vapour)
- Warning lights or fault codes in some cases
- Overheating or unstable temperature readings (if coolant-related)
Why Replacement Matters:
- Maintain correct ventilation and pressure control
- Prevent leaks and coolant/oil loss
- Support stable engine operating temperatures
- Avoid overheating and expensive repairs
- Restore proper system efficiency and reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810631010
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
The Breather Line is a OE MATCH ventilation hose designed to support correct pressure regulation and airflow within the vehicle’s engine or cooling system ventilation circuit (depending on application). This line helps route trapped air or vapours through the correct system pathways, ensuring stable operation and preventing pressure build-up.
Fits:
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-14
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-14
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-14
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-14
Diagram Ref No 6
What This Product Does:
- Allowing trapped air or vapours to vent safely
- Maintaining stable system pressure
- Supporting efficient coolant or crankcase circulation (application dependent)
- Helping prevent pressure-related leaks
- Ensuring the system operates correctly without airlocks or restriction
Symptoms Of Wear Or Failure:
- Coolant or oil vapour leaks (depending on system type)
- Cracked, split, or brittle hose material
- Poor system bleeding or air trapped in the circuit
- Coolant loss or pressure issues
- Engine bay smells (coolant or oil vapour)
- Warning lights or fault codes in some cases
- Overheating or unstable temperature readings (if coolant-related)
Why Replacement Matters:
- Maintain correct ventilation and pressure control
- Prevent leaks and coolant/oil loss
- Support stable engine operating temperatures
- Avoid overheating and expensive repairs
- Restore proper system efficiency and reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810631010
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
The Breather Line is a genuine Porsche ventilation hose designed to support correct pressure regulation and airflow within the vehicle’s engine or cooling system ventilation circuit (depending on application). This line helps route trapped air or vapours through the correct system pathways, ensuring stable operation and preventing pressure build-up.
Fits:
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2015-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2015-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2015-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2015-17
Diagram Ref No 6
What This Product Does:
- Allowing trapped air or vapours to vent safely
- Maintaining stable system pressure
- Supporting efficient coolant or crankcase circulation (application dependent)
- Helping prevent pressure-related leaks
- Ensuring the system operates correctly without airlocks or restriction
Symptoms Of Wear Or Failure:
- Coolant or oil vapour leaks (depending on system type)
- Cracked, split, or brittle hose material
- Poor system bleeding or air trapped in the circuit
- Coolant loss or pressure issues
- Engine bay smells (coolant or oil vapour)
- Warning lights or fault codes in some cases
- Overheating or unstable temperature readings (if coolant-related)
Why Replacement Matters:
- Maintain correct ventilation and pressure control
- Prevent leaks and coolant/oil loss
- Support stable engine operating temperatures
- Avoid overheating and expensive repairs
- Restore proper system efficiency and reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810631011
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
The Breather Line is a OE MATCH ventilation hose designed to support correct pressure regulation and airflow within the vehicle’s engine or cooling system ventilation circuit (depending on application). This line helps route trapped air or vapours through the correct system pathways, ensuring stable operation and preventing pressure build-up.
Fits:
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2015-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2015-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2015-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2015-17
Diagram Ref No 6
What This Product Does:
- Allowing trapped air or vapours to vent safely
- Maintaining stable system pressure
- Supporting efficient coolant or crankcase circulation (application dependent)
- Helping prevent pressure-related leaks
- Ensuring the system operates correctly without airlocks or restriction
Symptoms Of Wear Or Failure:
- Coolant or oil vapour leaks (depending on system type)
- Cracked, split, or brittle hose material
- Poor system bleeding or air trapped in the circuit
- Coolant loss or pressure issues
- Engine bay smells (coolant or oil vapour)
- Warning lights or fault codes in some cases
- Overheating or unstable temperature readings (if coolant-related)
Why Replacement Matters:
- Maintain correct ventilation and pressure control
- Prevent leaks and coolant/oil loss
- Support stable engine operating temperatures
- Avoid overheating and expensive repairs
- Restore proper system efficiency and reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810631011
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
The Coolant Hose is a genuine Porsche cooling system component designed to transfer engine coolant between key cooling circuit connections. Built to withstand high temperatures and constant pressure, this hose plays an essential role in maintaining stable engine operating temperature and preventing overheating.
Fits:
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Diagram Ref No 30
What This Product Does:
- Carrying coolant between engine and cooling system components
- Maintaining proper coolant circulation
- Supporting temperature regulation under load
- Helping prevent overheating and engine damage
- Ensuring reliable operation of the cooling system
Symptoms Of Wear Or Failure:
- Coolant leaks under the vehicle
- Visible cracks, swelling, or soft spots on the hose
- Coolant smell from the engine bay
- Low coolant warning light or repeated coolant loss
- Engine overheating or rising temperature gauge
- Steam from the engine bay
- Coolant residue or staining around hose connections
Why Replacement Matters:
- Prevent sudden coolant leaks and breakdowns
- Maintain correct engine operating temperature
- Protect against overheating and costly repairs
- Ensure the cooling system remains sealed and pressurised
- Improve long-term reliability and performance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810645810
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
The Coolant Hose is a OE MATCH cooling system component designed to transfer engine coolant between key cooling circuit connections. Built to withstand high temperatures and constant pressure, this hose plays an essential role in maintaining stable engine operating temperature and preventing overheating.
Fits:
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Diagram Ref No 30
What This Product Does:
- Carrying coolant between engine and cooling system components
- Maintaining proper coolant circulation
- Supporting temperature regulation under load
- Helping prevent overheating and engine damage
- Ensuring reliable operation of the cooling system
Symptoms Of Wear Or Failure:
- Coolant leaks under the vehicle
- Visible cracks, swelling, or soft spots on the hose
- Coolant smell from the engine bay
- Low coolant warning light or repeated coolant loss
- Engine overheating or rising temperature gauge
- Steam from the engine bay
- Coolant residue or staining around hose connections
Why Replacement Matters:
- Prevent sudden coolant leaks and breakdowns
- Maintain correct engine operating temperature
- Protect against overheating and costly repairs
- Ensure the cooling system remains sealed and pressurised
- Improve long-term reliability and performance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810645810
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 958 Cayenne 3.0L Diesel 2012-18
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810645200
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
This is a Genuine Porsche water coolant pipe, also described as a water inlet pipe, engine coolant pipe, coolant tube or cooling water tube - designed for the Porsche Cayenne 958 / 92A platform and is used within the engine cooling system on selected 3.6L petrol and 3.0L diesel models.
Fits:
Porsche 958 Cayenne 3.6L V6 2011 - 2018
Porsche 958 Cayenne 3.0L Diesel 2011 - 2018
Diagram ref no 26
This pipe fits in the engine cooling system of the Porsche Cayenne 958. It is used as part of the water inlet / coolant pipework assembly, routing coolant through the engine bay cooling circuit. Depending on engine version and specification, it may be shown in Porsche diagrams under coolant pipe, water cooling, coolant reservoir or water inlet pipe sections.
It helps maintain correct coolant routing, supports engine cooling performance and is ideal for replacing leaking, damaged or ageing coolant pipework during cooling system repairs.
Functions
• Routes engine coolant through the cooling system
• Provides a factory-correct coolant pipe connection
• Helps maintain correct coolant flow between cooling system components
• Supports engine temperature control and cooling efficiency
• Helps prevent coolant leaks when fitted with correct seals and connections
• Maintains OE Porsche fitment and hose/pipe routing
• Suitable for replacement during coolant system repair, water pump work or engine cooling maintenance.
Why Replace This Part?
Coolant pipes are exposed to heat cycles, engine vibration, coolant pressure and ageing. Over time, the pipe can become brittle, cracked, corroded, blocked or start to leak at its connection points. A damaged coolant pipe can cause coolant loss, reduced cooling efficiency and potential overheating. Replacing it with a Genuine Porsche OE coolant pipe helps restore the original cooling system layout, correct fitment and reliable coolant circulation.
When to replace
• If coolant is leaking from the pipe or connection points
• If the pipe is cracked, brittle, damaged or corroded
• During cooling system repairs or coolant hose replacement
• When replacing related components such as the water pump, thermostat or coolant reservoir connections
• If the cooling system is losing pressure
• If the engine shows signs of overheating caused by coolant loss
• During preventative maintenance on higher-mileage vehicles.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810631110
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
This OE Match water coolant pipe is a replacement cooling system pipe for Porsche 958 Cayenne models with 3.6L petrol and 3.0L diesel engines. It is designed to match the original-style fitment and helps carry coolant through the engine cooling circuit.
Fits:
Porsche 958 Cayenne 3.6L V6 2011 - 2018
Porsche 958 Cayenne 3.0L Diesel 2011 - 2018
Diagram ref no 26
The coolant pipe transfers engine coolant between cooling system components, helping regulate engine temperature and maintain reliable coolant circulation. A properly sealed coolant pipe helps prevent coolant loss, overheating, and pressure issues within the cooling system.
Functions
• Transfers coolant through the engine cooling system
• Helps maintain correct engine operating temperature
• Supports reliable coolant circulation
• Helps prevent coolant leaks and pressure loss
• Connects cooling system components as part of the coolant pipework
• Replaces cracked, leaking, brittle, or damaged original pipework
• OE Match replacement for correct fit and cooling system performance
Why Replace This Part?
Coolant pipes are exposed to heat cycles, coolant pressure, vibration, and age-related wear. Over time, the pipe can become brittle, cracked, warped, corroded, or begin leaking at the connection points. A damaged coolant pipe can lead to coolant loss, overheating, warning lights, or reduced cooling system reliability. Replacing it helps restore secure coolant flow and protects the engine from overheating damage.
When to replace
• Coolant is leaking from the pipe or connection points
• The pipe is cracked, brittle, warped, corroded, or damaged
• Coolant residue or staining is visible around the pipe
• The engine coolant level drops without an obvious cause
• The vehicle shows overheating or coolant warning messages
• The cooling system is being pressure-tested or repaired
• The water pump, thermostat, radiator hose, or coolant system components are being serviced
• As preventative maintenance during major cooling system work.
Where it fits on the car
This coolant pipe fits in the engine bay as part of the coolant circulation system. It connects cooling system components and helps route coolant through the engine cooling circuit. Exact mounting position may vary depending on whether the vehicle is fitted with the 3.6L petrol or 3.0L diesel engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810631110
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Shop Securely
12 Month Warranty
Worldwide Delivery
Expansion Tank Coolant Hoses – Reliable Cooling Connections for Porsche Vehicles
Expansion tank coolant hoses are essential components in your Porsche’s cooling system. They connect the coolant expansion tank (reservoir) to the radiator, water pump, and engine, allowing the system to maintain correct pressure and coolant levels during operation. These hoses ensure that excess coolant flows smoothly between the tank and the rest of the system — preventing overheating, leaks, and pressure loss.
At Design911, we supply a full range of genuine and manufacturer-quality expansion tank coolant hoses for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each hose is engineered for precise fitment, heat resistance, and long-term durability, ensuring your Porsche’s cooling system performs exactly as intended by the manufacturer.
What Do Expansion Tank Coolant Hoses Do?
Expansion tank hoses act as the link between the coolant
reservoir and the engine cooling circuit, helping to:
- Transport
coolant to and from the expansion tank as temperatures fluctuate.
- Maintain
proper pressure balance within the cooling system.
- Allow
coolant recovery as the system heats up and cools down.
- Prevent air pockets that can cause inefficient cooling or engine overheating.
Without properly functioning hoses, the cooling system cannot maintain the balance of pressure and temperature required for optimal performance.
Why Do Expansion Tank Coolant Hoses Fail?
Due to constant exposure to heat, pressure, and coolant
chemicals, these hoses can degrade or fail over time. Common causes include:
- Rubber
fatigue or cracking from repeated heat cycles.
- Coolant
leaks caused by weakened hose ends or clamps.
- Swelling
or softening from prolonged coolant contact.
- Aging
materials losing elasticity and sealing ability.
- Corrosion or contamination around connectors and fittings.
Typical signs of failure include visible cracks, coolant leaks near the expansion tank, fluctuating coolant levels, or overheating warnings.
Why Replace Faulty Expansion Tank Coolant Hoses?
A damaged or leaking expansion tank hose can cause coolant loss, air pockets, or pressure imbalance, leading to overheating or potential engine damage. Replacing these hoses is a simple but critical maintenance step to keep your Porsche’s cooling system running reliably.
Benefits of replacement include:
- Restored coolant flow and pressure regulation.
- Prevention of leaks and air ingress.
- Enhanced engine performance and temperature stability.
- Long-lasting, manufacturer-quality durability and fitment.
All hoses in this range are made using high-grade, reinforced materials designed to meet or exceed factory standards, ensuring exceptional performance, heat resistance, and reliability under all driving conditions.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed