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Coolant supply water hose. Porsche 996 3.4L C4 1998-01 - 99610674006
99610674006
Vehicle Group
- Porsche 996 C4 3.4L 1997-08/01
Information
Coolant supply water hose.
This Porsche Genuine OE Coolant Supply Water Hose is an original-equipment cooling system hose designed specifically for the Porsche 911 (996) Carrera 4 with the 3.4 L engine. Manufactured to Porsche’s factory specifications, this hose provides the exact fit, material quality, and durability required to maintain reliable coolant circulation within the engine cooling system.
Fits:
Porsche 996 C4 3.4L 1998 - 2001
Diagram ref no 1
This genuine Porsche hose replaces earlier part numbers 99610674003 and 99610674004, ensuring compatibility with the original cooling system design used in early 996 Carrera 4 models.
The coolant supply water hose carries engine coolant between key cooling system components, helping transport hot coolant from the engine to the radiator or distribution pipes where heat is dissipated. By maintaining steady coolant flow, it helps regulate engine temperature and prevents overheating.
A correctly functioning coolant hose ensures the cooling system maintains proper pressure and flow, allowing the engine to operate within its designed temperature range even under high load or spirited driving conditions.
Functions & Technical Role
• Coolant transfer: Moves coolant between the engine and the main cooling supply pipes
• Temperature regulation: Supports the cooling system in maintaining optimal engine operating temperature
• Pressure resistance: Designed to withstand high coolant pressure and temperature cycles
• Durable construction: Manufactured from heat- and ozone-resistant rubber compounds for long service life
• OEM precision fit: Exact hose shape and connections to match Porsche’s original cooling layout
Fitment / Position on Car
• Installed on: Engine cooling system
• Location: Between the rear coolant supply pipe and the main distribution pipe / radiator supply line
• Function: Forms part of the primary coolant circulation circuit between engine and cooling components.
Coolant hoses are exposed to constant heat, pressure, and vibration. Over time they can harden, crack, or leak, which may lead to coolant loss and potential engine overheating. Replacing worn hoses with genuine Porsche OE parts ensures the correct material quality, fitment, and durability required to maintain the performance and reliability of the Porsche cooling system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610674006
The product you are viewing cross references to these numbers
This Porsche Genuine OE Coolant Supply Water Hose is an original-equipment cooling system hose designed specifically for the Porsche 911 (996) Carrera 4 with the 3.4 L engine. Manufactured to Porsche’s factory specifications, this hose provides the exact fit, material quality, and durability required to maintain reliable coolant circulation within the engine cooling system.
Fits:
Porsche 996 C4 3.4L 1998 - 2001
Diagram ref no 1
This genuine Porsche hose replaces earlier part numbers 99610674003 and 99610674004, ensuring compatibility with the original cooling system design used in early 996 Carrera 4 models.
The coolant supply water hose carries engine coolant between key cooling system components, helping transport hot coolant from the engine to the radiator or distribution pipes where heat is dissipated. By maintaining steady coolant flow, it helps regulate engine temperature and prevents overheating.
A correctly functioning coolant hose ensures the cooling system maintains proper pressure and flow, allowing the engine to operate within its designed temperature range even under high load or spirited driving conditions.
Functions & Technical Role
• Coolant transfer: Moves coolant between the engine and the main cooling supply pipes
• Temperature regulation: Supports the cooling system in maintaining optimal engine operating temperature
• Pressure resistance: Designed to withstand high coolant pressure and temperature cycles
• Durable construction: Manufactured from heat- and ozone-resistant rubber compounds for long service life
• OEM precision fit: Exact hose shape and connections to match Porsche’s original cooling layout
Fitment / Position on Car
• Installed on: Engine cooling system
• Location: Between the rear coolant supply pipe and the main distribution pipe / radiator supply line
• Function: Forms part of the primary coolant circulation circuit between engine and cooling components.
Coolant hoses are exposed to constant heat, pressure, and vibration. Over time they can harden, crack, or leak, which may lead to coolant loss and potential engine overheating. Replacing worn hoses with genuine Porsche OE parts ensures the correct material quality, fitment, and durability required to maintain the performance and reliability of the Porsche cooling system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610674006
99610674003
99610674004
99610674006
The product you are viewing cross references to these numbers
Price: €69.96
Orderable
Also found on these pages
Related products
Vehicle Group
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Information
Water hose for cars with Tiptronic gearbox
Fits:
Porsche 996 C2 / C4 / C4S 1998-05 Tiptronic Gearbox
Click 'Zoom in' to see the diagram.
Diagram ref no 33.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610622266
The product you are viewing cross references to these numbers
Fits:
Porsche 996 C2 / C4 / C4S 1998-05 Tiptronic Gearbox
Click 'Zoom in' to see the diagram.
Diagram ref no 33.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610622266
99610622265
99610622266
99610622257
99610622256
The product you are viewing cross references to these numbers
Price: €73.17
Orderable
Vehicle Group
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Information
Water Hose that fits to the Water Pump part number 99610612155.
This Porsche Genuine OE Water Hose is an original factory coolant hose designed for the engine cooling system of Porsche 911 (996) models. This molded hose connects the cooling circuit components around the water thermostat and water pump, allowing coolant to circulate properly through the engine.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Diagram ref no 24.
This product supersedes Porsche's old part numbers: 99610650253, 99610650254
The coolant hose transfers engine coolant between the thermostat housing, water pump, and coolant return pipes, helping regulate engine temperature. By maintaining continuous coolant flow through the engine and cooling circuit, it ensures efficient heat dissipation and prevents overheating during normal driving or high engine loads.
The hose’s molded design allows it to fit precisely within the engine bay routing of the 996 cooling system.
Functions & Technical Role
• Coolant circulation: Routes coolant between the thermostat and cooling system pipes
• Temperature regulation: Supports stable engine operating temperature
• Pressure resistance: Designed to withstand cooling system pressure and temperature cycles
• Flexible connection: Absorbs vibration and engine movement within the cooling circuit
• OEM fitment: Molded to Porsche specifications for direct installation
Fitment / Position on Car
• Fitting position: Engine cooling system
• Location: Between the water thermostat housing and water pump / coolant return pipe
• System: Engine coolant circulation system
Coolant hoses operate under constant heat, pressure, and vibration. Over time, rubber can harden or crack, potentially leading to coolant leaks and engine overheating. Replacing worn hoses with genuine Porsche OE components helps maintain proper cooling system performance and prevents costly engine damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610650256
The product you are viewing cross references to these numbers
This Porsche Genuine OE Water Hose is an original factory coolant hose designed for the engine cooling system of Porsche 911 (996) models. This molded hose connects the cooling circuit components around the water thermostat and water pump, allowing coolant to circulate properly through the engine.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Diagram ref no 24.
This product supersedes Porsche's old part numbers: 99610650253, 99610650254
The coolant hose transfers engine coolant between the thermostat housing, water pump, and coolant return pipes, helping regulate engine temperature. By maintaining continuous coolant flow through the engine and cooling circuit, it ensures efficient heat dissipation and prevents overheating during normal driving or high engine loads.
The hose’s molded design allows it to fit precisely within the engine bay routing of the 996 cooling system.
Functions & Technical Role
• Coolant circulation: Routes coolant between the thermostat and cooling system pipes
• Temperature regulation: Supports stable engine operating temperature
• Pressure resistance: Designed to withstand cooling system pressure and temperature cycles
• Flexible connection: Absorbs vibration and engine movement within the cooling circuit
• OEM fitment: Molded to Porsche specifications for direct installation
Fitment / Position on Car
• Fitting position: Engine cooling system
• Location: Between the water thermostat housing and water pump / coolant return pipe
• System: Engine coolant circulation system
Coolant hoses operate under constant heat, pressure, and vibration. Over time, rubber can harden or crack, potentially leading to coolant leaks and engine overheating. Replacing worn hoses with genuine Porsche OE components helps maintain proper cooling system performance and prevents costly engine damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610650256
99610650253
99610550254
99610550256
The product you are viewing cross references to these numbers
Price: €82.53
In stock
Vehicle Group
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Information
Coolant hose - elbow. Coolant supply hose for oil pump housing.
Fits:
Porsche 996 3.4L/3.6L C2 / C4 / C4S 1998-2005
M 66X 01815 >>
Click 'Zoom in' for large parts diagram.
Diagram ref no 29
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610623356
The product you are viewing cross references to these numbers
Fits:
Porsche 996 3.4L/3.6L C2 / C4 / C4S 1998-2005
M 66X 01815 >>
Click 'Zoom in' for large parts diagram.
Diagram ref no 29
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610623356
99610623356
99610623355
99610623353
99610623352
The product you are viewing cross references to these numbers
Price: €22.68
In stock