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
Fits:
Porsche 924 1976-85
Click 'Zoom in' to see the diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
047121060
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
Shop Securely
12 Month Warranty
Worldwide Delivery
Water Coolant Pipe to Expansion Tank
Maintain the reliability and efficiency of your Porsche 924
cooling system with this OE Match Water Coolant Pipe to the Expansion Tank. This coolant hose connects the engine cooling system to the
expansion tank, allowing coolant to circulate correctly while accommodating
thermal expansion and contraction during engine operation.
Fits:
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
Diagram ref no 5
The expansion tank plays a vital role in maintaining correct coolant levels and system pressure. The connecting coolant pipe ensures that excess coolant can flow into the expansion tank as temperatures rise and return to the cooling system as the engine cools. Without a properly functioning hose, coolant circulation and pressure management can be compromised, potentially leading to overheating and coolant loss.
Manufactured to OE Match specifications, this replacement hose provides the correct fit, flexibility and durability required for reliable long-term operation.
What Does the Coolant Pipe to Expansion Tank Do?
The coolant pipe forms part of the engine's closed cooling system.
Its primary functions include:
- Connecting the cooling system to the expansion tank
- Allowing coolant expansion and return flow
- Maintaining correct coolant levels
- Supporting cooling system pressure regulation
- Preventing coolant loss
- Assisting engine temperature control
- Helping maintain overall cooling system efficiency
A properly functioning hose is essential for reliable engine cooling and long-term engine protection.
Why Do Coolant Pipes Fail?
Cooling system hoses are constantly exposed to heat cycles, pressure fluctuations and coolant chemicals.
Common causes of failure include:
- Rubber deterioration due to age
- Heat-related hardening and cracking
- Internal hose degradation
- Coolant contamination
- Pressure fatigue
- Engine bay heat exposure
- Perished rubber connections
- General wear and ageing
As the hose ages, it may become brittle, swollen, cracked or develop leaks.
When Should the Coolant Pipe Be Replaced?
Cooling system hoses should be inspected regularly during routine servicing.
Common signs replacement is required include:
- Coolant leaks
- Cracked or split hose surfaces
- Soft or swollen hose sections
- Coolant smell within the engine bay
- Visible hose deterioration
- Cooling system pressure loss
- Unexplained coolant level drops
- Preventative maintenance during cooling system refurbishment
Replacing ageing hoses before failure helps avoid costly overheating damage.
Why Replacement Matters
A failed coolant hose can quickly lead to coolant loss and engine overheating.
Benefits of replacement include:
- Improved cooling system reliability
- Reduced risk of coolant leaks
- Better engine temperature control
- Protection against overheating
- Improved cooling system pressure retention
- Increased long-term reliability
- Reduced risk of roadside breakdowns
- Restoration of factory cooling performance
For classic Porsche models, preventative cooling system maintenance is one of the best investments in long-term engine health.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
047121060
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
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