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Water Coolant Hose, Top. Porsche 944S / 944S2 - 94410623906
94410623906/1
Vehicle Group
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
Information
Radiator Top Hose
Maintain reliable engine cooling and protect your Porsche
from overheating with this OE Match Radiator Top Hose, designed specifically
for the Porsche 944 S and Porsche 944 S2. Manufactured to original equipment
specifications, this high-quality replacement hose ensures efficient coolant
circulation between the engine and radiator, helping your cooling system
operate at peak performance.
Fits:
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
Diagram ref no 25
The radiator top hose is one of the most important components in the engine cooling system. It carries hot coolant from the engine to the radiator, where heat is dissipated before the coolant returns to the engine. Because it operates under constant pressure and high temperatures, the hose naturally deteriorates over time and should be inspected regularly as part of routine maintenance.
This OE Match replacement provides the correct fit, flexibility and durability required to restore the cooling system to factory performance.
What Does the Radiator Top Hose Do?
The radiator top hose connects the engine to the upper section of the radiator.
Its primary functions include:
Carrying hot coolant from the engine to the radiator Maintaining continuous coolant circulation Helping regulate engine operating temperature Supporting efficient heat transfer Preventing overheating Maintaining cooling system pressure Ensuring reliable engine performance
Without a properly functioning top hose, coolant circulation is compromised, increasing the risk of overheating and engine damage.
Why Do Radiator Top Hoses Fail?
Cooling hoses are subjected to continuous heat, pressure and vibration throughout their service life.
Common causes of failure include:
- Age-related rubber deterioration
- Heat cycling
- Internal coolant contamination
- Pressure fatigue
- Oil contamination
- Cracking and hardening
- Swelling
- Perishing of the rubber compound
As the hose ages, it becomes less flexible and more prone to splitting or leaking.
Symptoms of a Failing Radiator Top Hose
Signs that the hose may require replacement include:
- Coolant leaks
- Cracked or perished rubber
- Soft or swollen hose walls
- Visible bulging
- Steam from the engine bay
- Sweet smell of coolant
- Engine overheating
- Low coolant warning
If left unattended, a failed radiator hose can quickly lead to significant coolant loss and potential engine damage.
When Should the Radiator Top Hose Be Replaced?
Replacement is recommended when:
- Carrying out cooling system servicing
- Replacing the radiator
- Replacing the thermostat or water pump
- Any signs of cracking or swelling are present
- Coolant leaks develop
- Completing an engine rebuild
- Restoring a Porsche 944 S or 944 S2
- Performing preventative maintenance on older vehicles
Many Porsche specialists recommend replacing ageing coolant hoses together to maximise long-term reliability.
Why Replacement Matters
Replacing an ageing radiator hose helps maintain the efficiency of the entire cooling system.
Benefits include:
- Reliable coolant circulation
- Reduced risk of overheating
- Improved cooling system performance
- Prevention of coolant leaks
- Increased engine reliability
- Greater peace of mind Long-term durability
- Factory-correct fit and performance
Preventative replacement is considerably less expensive than repairing engine damage caused by coolant loss.
Related reference numbers
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94410623906
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Price: £9.79
In stock
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Information
Distributor For Coolant.
The Distributor for Coolant, is a genuine Porsche OEM coolant distribution tube designed for the left side of the engine cooling system on Porsche Panamera (971 and 976) models. This component routes and distributes coolant between the radiator and engine cooling circuits, ensuring proper coolant flow and efficient heat dissipation. Manufactured to Porsche specifications, it provides precise fitment, secure sealing, and durability under high-temperature and pressurised conditions. This coolant distributor helps maintain stable engine operating temperatures and reliable cooling system performance.
Fits:
Why Replacement Matters:
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The Distributor for Coolant, is a genuine Porsche OEM coolant distribution tube designed for the left side of the engine cooling system on Porsche Panamera (971 and 976) models. This component routes and distributes coolant between the radiator and engine cooling circuits, ensuring proper coolant flow and efficient heat dissipation. Manufactured to Porsche specifications, it provides precise fitment, secure sealing, and durability under high-temperature and pressurised conditions. This coolant distributor helps maintain stable engine operating temperatures and reliable cooling system performance.
Fits:
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Diagram Ref No 6 And 7
What This Product Does:
- Directs coolant flow between the radiator and engine cooling components.
- Acts as a distribution junction, ensuring coolant is properly routed through the left-side cooling circuit.
- Helps maintain stable engine operating temperatures by supporting efficient heat transfer.
- Provides a secure, sealed connection between multiple coolant hoses or pipes under pressure.
- Cracks in the distributor housing or failed seals/O-rings can cause visible coolant seepage.
- Leaks from the distributor can lead to gradual coolant loss, requiring frequent top-ups.
- Improper coolant routing or coolant loss can reduce cooling efficiency and cause unstable temperature readings.
- A noticeable coolant odor near the radiator/front engine area often indicates leakage.
- Signs may include cracked plastic housing, damaged hose connection ports, degraded O-ring seals, corrosion (if applicable to fittings)
- Low coolant or temperature warnings may appear if leakage becomes significant.
- A faulty distributor can cause pressure imbalance in the cooling circuit.
Why Replacement Matters:
- Prevents coolant leaks that can cause low coolant levels and pressure loss.
- Maintains proper coolant distribution, ensuring balanced flow through the radiator and engine circuits.
- Helps prevent engine overheating, which can lead to serious and costly engine damage.
- Restores system sealing integrity, especially if O-rings or connection ports are worn.
- Protects surrounding components, as leaking coolant can damage wiring, sensors, belts, and other engine bay parts.
Related reference numbers
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9A7121438
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Vehicle Group
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Information
Distributor For Coolant.
The Distributor for Coolant, is a OE MATCH coolant distribution tube designed for the left side of the engine cooling system on Porsche Panamera (971 and 976) models. This component routes and distributes coolant between the radiator and engine cooling circuits, ensuring proper coolant flow and efficient heat dissipation. It provides precise fitment, secure sealing, and durability under high-temperature and pressurised conditions. This coolant distributor helps maintain stable engine operating temperatures and reliable cooling system performance.
Fits:
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A7121438
The product you are viewing cross references to these numbers
The Distributor for Coolant, is a OE MATCH coolant distribution tube designed for the left side of the engine cooling system on Porsche Panamera (971 and 976) models. This component routes and distributes coolant between the radiator and engine cooling circuits, ensuring proper coolant flow and efficient heat dissipation. It provides precise fitment, secure sealing, and durability under high-temperature and pressurised conditions. This coolant distributor helps maintain stable engine operating temperatures and reliable cooling system performance.
Fits:
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
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Diagram Ref No 6 And 7
What This Product Does:
- Directs coolant flow between the radiator and engine cooling components.
- Acts as a distribution junction, ensuring coolant is properly routed through the left-side cooling circuit.
- Helps maintain stable engine operating temperatures by supporting efficient heat transfer.
- Provides a secure, sealed connection between multiple coolant hoses or pipes under pressure.
- Cracks in the distributor housing or failed seals/O-rings can cause visible coolant seepage.
- Leaks from the distributor can lead to gradual coolant loss, requiring frequent top-ups.
- Improper coolant routing or coolant loss can reduce cooling efficiency and cause unstable temperature readings.
- A noticeable coolant odor near the radiator/front engine area often indicates leakage.
- Signs may include cracked plastic housing, damaged hose connection ports, degraded O-ring seals, corrosion (if applicable to fittings)
- Low coolant or temperature warnings may appear if leakage becomes significant.
- A faulty distributor can cause pressure imbalance in the cooling circuit.
Why Replacement Matters:
- Prevents coolant leaks that can cause low coolant levels and pressure loss.
- Maintains proper coolant distribution, ensuring balanced flow through the radiator and engine circuits.
- Helps prevent engine overheating, which can lead to serious and costly engine damage.
- Restores system sealing integrity, especially if O-rings or connection ports are worn.
- Protects surrounding components, as leaking coolant can damage wiring, sensors, belts, and other engine bay parts.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A7121438
9A712143800
9A712143810
The product you are viewing cross references to these numbers
Prices from: £56.90