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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Related, superseded, cross reference or alternative numbers for comparison.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
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.
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Saturday: Closed
Sunday: Closed