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Porsche // 968 (1992-1995) // Any
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Radiator Top / Bottom Hoses
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
This OE Match coolant top hose connects the radiator and cylinder head, it replaces the upper hose within the engine cooling circuit.
Fits
Porsche 968 1992-95
Check fitment for your specific vehicle (model, year, engine) before ordering.
Diagram ref no: 23
What This Product Does
The upper radiator hose provides a passage for coolant between the cylinder head and radiator. Keeping this connection intact allows coolant to circulate through the cooling circuit without escaping through a damaged hose or leaking joint. The hose forms part of the system; it does not replace the radiator, thermostat or water pump.
Functions
- Connects the cylinder-head coolant outlet with the radiator.
- Carries coolant through the upper radiator connection.
- Maintains a contained coolant path when correctly fitted with sound connections.
Technical Details
- Brand: OE Match.
- Supplied part reference: 94410623911.
- Installation position: upper radiator-to-cylinder-head connection.
Symptoms of Fault
- Moisture or coolant drips around either hose connection.
- Dried deposits at the radiator neck or hose ends.
- A sweet coolant odour near the engine bay.
- Coolant level falling between checks.
- Visible splitting, swelling or unusually soft areas.
- Leakage that becomes apparent after a hot run.
- A temperature reading that rises above normal.
- Gurgling associated with coolant loss or trapped air.
These signs can also originate elsewhere in the cooling system. Inspect the hose and its connections before deciding which component needs replacement.
Why Replacement Matters
Heat cycles and age can weaken a hose or its connections, allowing minor seepage to develop into more substantial coolant loss. Renewing a deteriorated hose addresses that damaged section of the circuit. Examine the adjoining clamps and connection surfaces at the same time, as worn supporting components can leave a new hose joint leaking.
FAQs
How can a suspected leak be located?
A cooling-system pressure test can help identify seepage at the hose, its joints or another component.
Should the clamps be checked during replacement?
Yes. Inspect their condition and retention, and renew damaged or weakened clamps where necessary.
Why might leakage appear only when hot?
Operating temperature and pressure can expose a weakened hose or joint that remains dry when cold.
Does overheating prove this hose has failed?
No. Confirm the source of coolant loss and inspect the wider cooling circuit before replacing parts.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410623911
The product you are viewing cross references to these numbers
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
To fit:
Porsche 968 3.0 (i4) 236bhp 1992-1995
These hoses are entirely manufactured in high quality silicone for best finish and durability. With three to five layers of reinforcement, depending of the inner diameter, the hoses withstand high pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that often cracks from age.
This is the durable solution for you that in addition improves the appearance!
Hoses Included:
• Upper radiator hose OE Reference: 94410623911
• Lower radiator hose OE Reference: 95110623704
• Radiator bleed hose OE Reference: 95110624901
• Throttle body preheating hose OE Reference: 94410623604
• Other radiator hoses OE Reference: 94410624104
• Other radiator hoses OE Reference: 94410625301
• Heater hose OE Reference: 94457258900
• Heater hose OE Reference: 94457258702
• Expansion tank hose OE Reference: 94410621705
• Expansion tank hose OE Reference: 94410625100
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
DO88-KIT178S
The product you are viewing cross references to these numbers
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Fits:
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95110623704
The product you are viewing cross references to these numbers
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Fits:
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95110623704
The product you are viewing cross references to these numbers
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Fits:
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410623911
The product you are viewing cross references to these numbers
Radiator Top & Bottom Hoses – Reliable Cooling for Porsche Performance
Radiator top and bottom hoses are vital components of your Porsche’s cooling system, responsible for transporting coolant between the radiator and the engine. The top hose carries hot coolant from the engine to the radiator for cooling, while the bottom hose returns the cooled fluid back to the engine, maintaining optimal operating temperatures for performance, efficiency, and reliability.
At Design911, we offer a full range of genuine and manufacturer-quality radiator top and bottom hoses for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each hose is precision-engineered for perfect fitment, high pressure tolerance, and exceptional heat resistance — ensuring reliable cooling under the most demanding driving conditions.
What Do Radiator Top and Bottom Hoses Do?
Coolant hoses are the lifelines of your Porsche’s cooling
system, and the radiator hoses perform the following key functions:
- Carry
coolant between the radiator and the engine.
- Regulate
engine temperature for consistent performance.
- Maintain
coolant pressure throughout the cooling circuit.
- Prevent overheating by ensuring efficient heat transfer.
Both the top and bottom hoses are designed to withstand high heat, vibration, and coolant pressure, providing dependable performance in every driving scenario.
Why Do Radiator Hoses Fail?
Over time, radiator hoses deteriorate due to heat, pressure,
and exposure to coolant. Common causes of hose failure include:
- Rubber
cracking or hardening from continuous heat cycles.
- Swelling
or soft spots due to coolant chemical breakdown.
- Leaks
at hose ends or clamps from pressure loss.
- Abrasion
damage caused by engine vibration or contact.
- Age-related material fatigue, especially in older vehicles.
Symptoms of hose failure include coolant leaks, visible cracks or bulges, fluctuating engine temperature, or a noticeable coolant smell in the engine bay.
Why Replace Faulty Radiator Hoses?
A leaking or weakened radiator hose can lead to overheating, coolant loss, and potential engine damage. Replacing these hoses as part of routine maintenance ensures consistent cooling performance and reliability.
Benefits of replacement include:
- Restored coolant flow and temperature stability.
- Prevention of leaks and overheating.
- Improved cooling system pressure and performance.
- Manufacturer-quality materials for long-term durability.
All radiator hoses in this range are made using reinforced, high-grade rubber and polymer compounds, designed to meet or exceed factory specifications for heat resistance, flexibility, and longevity.
