Water radiator hose, Intake Top, LEFT or RIGHT. Porsche 996 Carrera 4S / 996 Turbo  ❭  99610662179

Water radiator hose, Intake Top.
OE Match upper radiator coolant hose designed to replicate the original factory-specified radiator top hose used on select Porsche 911 996 models. It bridges the coolant path between the engine’s cooling outlets and the radiator inlet, ensuring efficient circulation as part of the engine’s thermal management system.
Sold each, Fits left or right side.

Fits:
Porsche 996 C4S 2002 - 2005
Porsche 996 Turbo 2001 - 2005

This product supersedes Porsche's old part numbers:  99610662174, 99610662178

Diagram Ref No 11.

The upper coolant hose carries hot coolant from the engine head thermostat outlet to the radiator inlet, where heat is removed before the coolant returns to the engine. By preserving the correct coolant routing and preventing blockages or restrictions, the hose supports consistent operating temperature and helps prevent overheating

Positioned at the upper portion of the radiator circuit, this OE Match hose:
•  Transports heated coolant from the engine to the radiator
•  Maintains correct alignment with OEM coolant ports
•  Resists expansion, collapse, and heat degradation
•  Works with factory-style clamps and mounting points.
Designed with the original hose bends and dimensions, it prevents interference with adjacent components and maintains coolant flow under all operating conditions.

Cooling system hoses degrade with age, heat cycling, and exposure to coolant chemicals. A compromised upper radiator hose may become cracked, swollen, soft, or brittle, increasing the risk of leaks, reduced coolant flow, and engine overheating. An OE Match replacement restores the correct coolant path and structural integrity without costly modifications.

Replace this hose if you notice:
• Coolant leaks or wetness around the hose ends
• Cracks, bulges, or soft spots in the hose material
• Overheating or fluctuating engine temperatures
• During a cooling system overhaul or replacement of related hardware


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99610662179

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