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Coolant Hoses - Engine Bay
By OE Match
Filter by brand
Vehicle Group
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Information
Coolant hose & oil pump connecting flange
This coolant hose is engineered to replicate the original Porsche part’s fit, material and function for the cooling system of Porsche 911 (996 & 997 series). It connects the engine to the supply pipe, ensuring proper coolant flow and stable engine temperatures under all conditions. One end fit the coolant tube the other end fits to the oil pump connecting flange 99710621600
Fits:
Porsche 996 C2 / C4 / C4S 2002 - 2005
Porsche 997.1 C2 / C4 2005 - 2008
Porsche 997.1 C2S / C4S 2005 - 2008
Diagram ref no 23
• Location: Cooling system hose, generally the engine to supply/coolant pipe connection.
• Replacement: for factory numbers 997 106 831 03 and cross-references 996 106 831 01, 997 106 831 02.
• Function: This hose conducts coolant between the engine block and the external supply pipe (or radiator / heat exchanger) as part of the cooling circuit. Correct hose quality and routing are critical to maintaining engine temperature regulation, preventing overheating and avoiding coolant leaks.
Over time, coolant hoses can become hardened, cracked, swollen or leak due to heat cycles, pressure changes and age. A compromised hose may lead to coolant loss, engine overheating, or reduced cooling efficiency.
Replace this hose when:
• The original shows signs of cracks, bulging, oil or coolant staining.
• You notice coolant loss, overheating warnings or low coolant levels.
• You are performing a cooling system overhaul or replacing related pipes/fittings.
Installing this hose restores reliable coolant flow, proper fitment and long-term durability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710683103
The product you are viewing cross references to these numbers
This coolant hose is engineered to replicate the original Porsche part’s fit, material and function for the cooling system of Porsche 911 (996 & 997 series). It connects the engine to the supply pipe, ensuring proper coolant flow and stable engine temperatures under all conditions. One end fit the coolant tube the other end fits to the oil pump connecting flange 99710621600
Fits:
Porsche 996 C2 / C4 / C4S 2002 - 2005
Porsche 997.1 C2 / C4 2005 - 2008
Porsche 997.1 C2S / C4S 2005 - 2008
Diagram ref no 23
• Location: Cooling system hose, generally the engine to supply/coolant pipe connection.
• Replacement: for factory numbers 997 106 831 03 and cross-references 996 106 831 01, 997 106 831 02.
• Function: This hose conducts coolant between the engine block and the external supply pipe (or radiator / heat exchanger) as part of the cooling circuit. Correct hose quality and routing are critical to maintaining engine temperature regulation, preventing overheating and avoiding coolant leaks.
Over time, coolant hoses can become hardened, cracked, swollen or leak due to heat cycles, pressure changes and age. A compromised hose may lead to coolant loss, engine overheating, or reduced cooling efficiency.
Replace this hose when:
• The original shows signs of cracks, bulging, oil or coolant staining.
• You notice coolant loss, overheating warnings or low coolant levels.
• You are performing a cooling system overhaul or replacing related pipes/fittings.
Installing this hose restores reliable coolant flow, proper fitment and long-term durability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710683103
99710683103
99710683102
99610683101
99710621600
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Coolant hose. Porsche 996 / 997.1 (99710683103/1
1 x Oil Pump Connection Piece Porsche 997 (99710621600
1 x Oil pump gasket. Porsche Boxster 986 / 996 / 997 (99610632151/1
2 x M6 x 20 Hex. Head Bolt for Multiple Applications (90037803001/1
Price: €84.15
Arriving soon
Vehicle Group
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Information
Water coolant engine section pipe kit. Porsche 996 C4 3.6L Manual
Fits:
Porsche 996 C4 3.6L Manual
Kits comes with engine bay rubber pipe
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT996C4.36.M
The product you are viewing cross references to these numbers
Fits:
Porsche 996 C4 3.6L Manual
Kits comes with engine bay rubber pipe
Diagram ref: #1, #3, #18, #23, # 24, #27, #33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT996C4.36.M
99610688808
99610674006
99610621260
99610622267
99610685006
99610683204
99710683103
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Coolant return water hose. Porsche 996 3.6L C4 MANUAL (99610688808
1 x Coolant supply water hose. Porsche 996 C4 3.4L 1998-01 (99610674006/1
1 x Coolant hose, supply. Porsche 996 (99610621260/1
1 x Water hose. Porsche 996 C2 / C4 3.6L Manual Gearbox (99610622267
1 x Water hose for water pump. Porsche 996 2002-05 (99610685006
1 x Water coolant hose. Porsche 996 2002 onwards (99610683204/1
1 x Coolant hose. Porsche 996 / 997.1 (99710683103/1
Price: €353.69
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
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: €11.70
In stock
Vehicle Group
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Information
Coolant hose, return, LEFT.
Left Side Return Hose, From right side radiator return pipe to under car return pipe.
Fits:
Porsche 996 C4 / C4S 1998-05
All-wheel drive (option code: 339)
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610672806
The product you are viewing cross references to these numbers
Left Side Return Hose, From right side radiator return pipe to under car return pipe.
Fits:
Porsche 996 C4 / C4S 1998-05
All-wheel drive (option code: 339)
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610672806
99610672806
99610672803
99610672805
The product you are viewing cross references to these numbers
Price: €17.55
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, supply.
From feed pipe.
Fits:
Porsche 996 C2 / C4 / C4S 1998-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 27
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610621260
The product you are viewing cross references to these numbers
From feed pipe.
Fits:
Porsche 996 C2 / C4 / C4S 1998-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 27
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610621260
99610621253
99610621252
99610621253
99610621260
The product you are viewing cross references to these numbers
Price: €30.36
In stock
Vehicle Group
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Information
Coolant hose, Supply. RIGHT.
Hose for long supply tube from engine to short tube going to radiator breather.
Fits:
Porsche 996 C4 / C4S 1998-05
All-wheel drive (option code: 339)
This product supersedes Porsche's old part numbers:
- 99610672403
- 99610672405
Click 'Zoom in' for large parts diagram.
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610672406
The product you are viewing cross references to these numbers
Hose for long supply tube from engine to short tube going to radiator breather.
Fits:
Porsche 996 C4 / C4S 1998-05
All-wheel drive (option code: 339)
This product supersedes Porsche's old part numbers:
- 99610672403
- 99610672405
Click 'Zoom in' for large parts diagram.
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610672406
99610672406
99610672403
99610672405
The product you are viewing cross references to these numbers
Price: €25.74
In stock
Vehicle Group
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Information
Coolant hose.
This coolant hose is engineered to replicate the original Porsche part’s fit, material and function for the cooling system of Porsche 911 (997 series). It connects the engine to the supply pipe, ensuring proper coolant flow and stable engine temperatures under all conditions. One end fit the coolant tube the other end fits to the oil pump connecting flange 99710621600
Fits:
Porsche 996 C2 / C4 / C4S 2002 - 2005
Porsche 997.1 C2 / C4 2005 - 2008
Porsche 997.1 C2S / C4S 2005 - 2008
Diagram ref no 23
• Location: Cooling system hose, generally the engine to supply/coolant pipe connection.
• Replacement: for factory numbers 997 106 831 03 and cross-references 996 106 831 01, 997 106 831 02.
• Function: This hose conducts coolant between the engine block and the external supply pipe (or radiator / heat exchanger) as part of the cooling circuit. Correct hose quality and routing are critical to maintaining engine temperature regulation, preventing overheating and avoiding coolant leaks.
Over time, coolant hoses can become hardened, cracked, swollen or leak due to heat cycles, pressure changes and age. A compromised hose may lead to coolant loss, engine overheating, or reduced cooling efficiency.
Replace this hose when:
• The original shows signs of cracks, bulging, oil or coolant staining.
• You notice coolant loss, overheating warnings or low coolant levels.
• You are performing a cooling system overhaul or replacing related pipes/fittings.
Installing this hose restores reliable coolant flow, proper fitment and long-term durability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710683103
The product you are viewing cross references to these numbers
This coolant hose is engineered to replicate the original Porsche part’s fit, material and function for the cooling system of Porsche 911 (997 series). It connects the engine to the supply pipe, ensuring proper coolant flow and stable engine temperatures under all conditions. One end fit the coolant tube the other end fits to the oil pump connecting flange 99710621600
Fits:
Porsche 996 C2 / C4 / C4S 2002 - 2005
Porsche 997.1 C2 / C4 2005 - 2008
Porsche 997.1 C2S / C4S 2005 - 2008
Diagram ref no 23
• Location: Cooling system hose, generally the engine to supply/coolant pipe connection.
• Replacement: for factory numbers 997 106 831 03 and cross-references 996 106 831 01, 997 106 831 02.
• Function: This hose conducts coolant between the engine block and the external supply pipe (or radiator / heat exchanger) as part of the cooling circuit. Correct hose quality and routing are critical to maintaining engine temperature regulation, preventing overheating and avoiding coolant leaks.
Over time, coolant hoses can become hardened, cracked, swollen or leak due to heat cycles, pressure changes and age. A compromised hose may lead to coolant loss, engine overheating, or reduced cooling efficiency.
Replace this hose when:
• The original shows signs of cracks, bulging, oil or coolant staining.
• You notice coolant loss, overheating warnings or low coolant levels.
• You are performing a cooling system overhaul or replacing related pipes/fittings.
Installing this hose restores reliable coolant flow, proper fitment and long-term durability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710683103
99710683103
99710683102
99610683101
The product you are viewing cross references to these numbers
Price: €45.05
In stock
Vehicle Group
- Porsche 996 C4 3.6L 09/01-2005
Information
Coolant return water hose. RETURN
Fits:
Porsche 996 C4 3.6L 2002>> MANUAL
This product supersedes Porsche's old part numbers:
- 99610688802
- 99610688806
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610688808
The product you are viewing cross references to these numbers
Fits:
Porsche 996 C4 3.6L 2002>> MANUAL
This product supersedes Porsche's old part numbers:
- 99610688802
- 99610688806
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610688808
99610688808
99610688806
99610688802
The product you are viewing cross references to these numbers
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
- Porsche 996 TURBO 2000-05
Information
Engine coolant hose, Intake. RIGHT.
Fits:
Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610672305
The product you are viewing cross references to these numbers
Fits:
Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610672305
99610672305
99610672304
99610672302
The product you are viewing cross references to these numbers
Price: €25.74
Arriving soon
Vehicle Group
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Information
Heater hose - Engine to return line.
OE Match heater coolant return hose is a direct-fit replacement designed to replicate the original Porsche hose used in the heater return circuit on Porsche 911 996 and 997 models. It carries coolant from the heater core back into the engine cooling system, supporting both cabin heating and overall thermal regulation.
Fits:
Porsche 996 Carrera 2002 - 2005 Tiptronic Gearbox only
Porsche 997.1 3.6L / 3.8L 2004 - 2008
Porsche 997.1 Turbo / GT2 2007 - 2009
Porsche 997.2 Turbo / GT2 RS 2010 - 2013
Porsche 997 GT3 3.8 / 4.0 2009 - 2011
Diagram ref no 42
The hose installs directly using original mounting points and standard Porsche hose clamps, making it suitable for both routine maintenance and larger cooling system overhauls.
The heater coolant return hose channels warmed coolant from the heater core back to the engine’s cooling circuit, completing the heater loop. This allows the cooling system to maintain balanced flow and ensures consistent interior heating performance.
Installed between the heater core outlet and the engine return line, this hose:
• Maintains correct coolant flow and pressure in the heater circuit
• Supports reliable cabin heating
• Resists collapse, swelling, and heat degradation
• Integrates with factory hose routing and connections
Its OE-matched geometry ensures proper clearance and reduces stress on joints and adjacent hoses.
Over time, heater hoses deteriorate due to heat cycling and coolant exposure. A failing return hose can cause coolant leaks, reduced heating efficiency, air ingress into the cooling system, or engine overheating. Replacing worn hoses with an OE Match component restores proper coolant circulation and helps prevent unexpected cooling system failures.
When to replace:
• Visible cracks, swelling, or soft spots
• Coolant leaks around the hose ends
• Heater blowing cold air, indicating poor coolant flow
• Cooling system overhaul or heater core service
• Preventive maintenance on high-mile vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610622275
The product you are viewing cross references to these numbers
OE Match heater coolant return hose is a direct-fit replacement designed to replicate the original Porsche hose used in the heater return circuit on Porsche 911 996 and 997 models. It carries coolant from the heater core back into the engine cooling system, supporting both cabin heating and overall thermal regulation.
Fits:
Porsche 996 Carrera 2002 - 2005 Tiptronic Gearbox only
Porsche 997.1 3.6L / 3.8L 2004 - 2008
Porsche 997.1 Turbo / GT2 2007 - 2009
Porsche 997.2 Turbo / GT2 RS 2010 - 2013
Porsche 997 GT3 3.8 / 4.0 2009 - 2011
Diagram ref no 42
The hose installs directly using original mounting points and standard Porsche hose clamps, making it suitable for both routine maintenance and larger cooling system overhauls.
The heater coolant return hose channels warmed coolant from the heater core back to the engine’s cooling circuit, completing the heater loop. This allows the cooling system to maintain balanced flow and ensures consistent interior heating performance.
Installed between the heater core outlet and the engine return line, this hose:
• Maintains correct coolant flow and pressure in the heater circuit
• Supports reliable cabin heating
• Resists collapse, swelling, and heat degradation
• Integrates with factory hose routing and connections
Its OE-matched geometry ensures proper clearance and reduces stress on joints and adjacent hoses.
Over time, heater hoses deteriorate due to heat cycling and coolant exposure. A failing return hose can cause coolant leaks, reduced heating efficiency, air ingress into the cooling system, or engine overheating. Replacing worn hoses with an OE Match component restores proper coolant circulation and helps prevent unexpected cooling system failures.
When to replace:
• Visible cracks, swelling, or soft spots
• Coolant leaks around the hose ends
• Heater blowing cold air, indicating poor coolant flow
• Cooling system overhaul or heater core service
• Preventive maintenance on high-mile vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610622275
99610622275
99610622274
99610622265
99610622266
99610622257
99610622256
The product you are viewing cross references to these numbers
Price: €10.47
Arriving soon
Vehicle Group
- 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 coolant hose.
Fits:
Porsche 996 - 2002 onwards
For engine codes - M96-10, M96-02, M96-04, M96-03
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610683204
The product you are viewing cross references to these numbers
Fits:
Porsche 996 - 2002 onwards
For engine codes - M96-10, M96-02, M96-04, M96-03
Click 'Zoom in' for large parts diagram.
Diagram ref no 24
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610683204
99610683204
99610683203
The product you are viewing cross references to these numbers
Price: €46.74
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
Water hose that fits to the water pump part number 99610612155.
This OE Match water hose is a coolant hose designed to connect the engine cooling circuit to the water thermostat housing on Porsche 911 (996) models produced between 1998 and 2005. This hose forms part of the engine’s cooling system, allowing coolant to circulate between the engine and thermostat assembly to regulate operating temperature.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Diagram ref no 24
This product supersedes Porsche's old part numbers: 99610650253, 99610650254.
The hose carries coolant between the thermostat housing and the engine’s cooling pipes. This allows the thermostat to regulate coolant flow depending on engine temperature, ensuring the engine warms up efficiently and remains within the correct operating range.
A properly functioning coolant hose is essential to maintain stable engine temperatures and prevent overheating.
Function
• Coolant Circulation: Transfers coolant between the thermostat housing and engine cooling pipes
• Temperature Regulation: Supports thermostat operation in controlling engine temperature
• Cooling System Integrity: Maintains sealed coolant flow under pressure
• Engine Protection: Helps prevent overheating and cooling system leaks
Coolant hoses operate under constant heat and pressure. Over time the rubber can become brittle, swell or crack due to thermal cycling and coolant exposure. A deteriorated hose may cause coolant leaks or reduced cooling efficiency, potentially leading to engine overheating. Replacing worn hoses ensures the cooling system maintains proper pressure and flow.
When to Replace. Consider replacing the hose if you notice:
• Visible cracks, swelling or deterioration in the rubber
• Coolant leaks around the thermostat connection
• Loss of coolant pressure or overheating issues
• During cooling system overhaul or thermostat replacement.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610650256
The product you are viewing cross references to these numbers
This OE Match water hose is a coolant hose designed to connect the engine cooling circuit to the water thermostat housing on Porsche 911 (996) models produced between 1998 and 2005. This hose forms part of the engine’s cooling system, allowing coolant to circulate between the engine and thermostat assembly to regulate operating temperature.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005
Diagram ref no 24
This product supersedes Porsche's old part numbers: 99610650253, 99610650254.
The hose carries coolant between the thermostat housing and the engine’s cooling pipes. This allows the thermostat to regulate coolant flow depending on engine temperature, ensuring the engine warms up efficiently and remains within the correct operating range.
A properly functioning coolant hose is essential to maintain stable engine temperatures and prevent overheating.
Function
• Coolant Circulation: Transfers coolant between the thermostat housing and engine cooling pipes
• Temperature Regulation: Supports thermostat operation in controlling engine temperature
• Cooling System Integrity: Maintains sealed coolant flow under pressure
• Engine Protection: Helps prevent overheating and cooling system leaks
Coolant hoses operate under constant heat and pressure. Over time the rubber can become brittle, swell or crack due to thermal cycling and coolant exposure. A deteriorated hose may cause coolant leaks or reduced cooling efficiency, potentially leading to engine overheating. Replacing worn hoses ensures the cooling system maintains proper pressure and flow.
When to Replace. Consider replacing the hose if you notice:
• Visible cracks, swelling or deterioration in the rubber
• Coolant leaks around the thermostat connection
• Loss of coolant pressure or overheating issues
• During cooling system overhaul or thermostat replacement.
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: €45.63
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
Water hose for cars with Tiptronic gearbox
High-quality OE Match coolant hose engineered to match the original Porsche specification for fit, flexibility, and durability. It is designed for the Porsche 996 (911) 1998–2005 with Tiptronic automatic transmission, and carries coolant within the engine’s cooling circuit to maintain proper operating temperatures. It installs directly in place of the original hose with no modification required, ensuring correct coolant flow and long-term service life.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005 Tiptronic Gearbox
Diagram ref no 33.
The Porsche 996’s water cooling system is responsible for regulating engine temperature under all driving conditions - from cold starts to high-speed touring. The water hose is a critical link in the coolant circuit, connecting key components such as the water pump, thermostat housing, radiator, and cylinder head.
Over time, heat cycling, pressure fluctuations, and environmental exposure cause hoses to age. Rubber can harden, swell, crack, or develop soft spots that lead to leaks, reduced coolant flow, or sudden failure. Because this hose operates under both thermal and pressure stress, deterioration can compromise cooling performance and increase the risk of engine overheating.
The water hose:
• Carries pressurised engine coolant between major cooling system components
• Maintains consistent coolant flow for stable temperature control
• Withstands heat, vibration, and pressure from the engine’s cooling system
• Helps prevent overheating and protects engine components
A compromised water hose can lead to:
• Coolant leaks
• Reduced heating efficiency
• Engine overheating
• Loss of pressure in the cooling circuit
Replacing old or degraded hoses with an OE Match water hose helps maintain coolant flow, preserves optimal engine temperatures, and prevents unexpected breakdowns due to hose failure.
Replace this water hose if you notice:
• Visible cracks, soft spots, or swelling
• Coolant leakage at hose ends
• Unexplained engine overheating
• During water pump or thermostat service
• As part of preventative maintenance on higher-mile vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610622266
The product you are viewing cross references to these numbers
High-quality OE Match coolant hose engineered to match the original Porsche specification for fit, flexibility, and durability. It is designed for the Porsche 996 (911) 1998–2005 with Tiptronic automatic transmission, and carries coolant within the engine’s cooling circuit to maintain proper operating temperatures. It installs directly in place of the original hose with no modification required, ensuring correct coolant flow and long-term service life.
Fits:
Porsche 996 C2 / C4 / C4S 1998 - 2005 Tiptronic Gearbox
Diagram ref no 33.
The Porsche 996’s water cooling system is responsible for regulating engine temperature under all driving conditions - from cold starts to high-speed touring. The water hose is a critical link in the coolant circuit, connecting key components such as the water pump, thermostat housing, radiator, and cylinder head.
Over time, heat cycling, pressure fluctuations, and environmental exposure cause hoses to age. Rubber can harden, swell, crack, or develop soft spots that lead to leaks, reduced coolant flow, or sudden failure. Because this hose operates under both thermal and pressure stress, deterioration can compromise cooling performance and increase the risk of engine overheating.
The water hose:
• Carries pressurised engine coolant between major cooling system components
• Maintains consistent coolant flow for stable temperature control
• Withstands heat, vibration, and pressure from the engine’s cooling system
• Helps prevent overheating and protects engine components
A compromised water hose can lead to:
• Coolant leaks
• Reduced heating efficiency
• Engine overheating
• Loss of pressure in the cooling circuit
Replacing old or degraded hoses with an OE Match water hose helps maintain coolant flow, preserves optimal engine temperatures, and prevents unexpected breakdowns due to hose failure.
Replace this water hose if you notice:
• Visible cracks, soft spots, or swelling
• Coolant leakage at hose ends
• Unexplained engine overheating
• During water pump or thermostat service
• As part of preventative maintenance on higher-mile vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610622266
99610622265
99610622266
99610622257
99610622256
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About Coolant Hoses - Engine Bay
OEMatch Coolant Hoses - Engine Bay — Fit, Function, Confidence
Engine-bay coolant hoses route coolant between the radiator, water pump and engine to maintain operating temperature in Porsche models. OEMatch supplies a wide selection of hose types and the related clips and connectors commonly needed for routine maintenance and targeted repairs.
Available Types- Upper and lower radiator hoses for coolant flow between engine and radiator
- Water pump connection hoses that link pump outlets to the cooling circuit
- Heater and bypass hoses for cabin heat and system circulation
- Silicone and reinforced rubber options for higher temperature or performance applications
- Flexible couplers and joining pieces used at junctions and branch points
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original coolant hoses. OE (Original Equipment) refers to parts matching original specifications for the coolant hoses and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM coolant hoses engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. In practical terms, engine-bay hoses are selected for internal diameter, length, bend profile and material to suit the coolant routing and connection points used on each Porsche model.
Benefits Include- Restored coolant circulation to maintain stable engine temperatures
- Reduced risk of leaks, overheating and related component damage
- Renewed hose ends and secure connections at clamps and fittings
- Heat ageing and repeated thermal cycling that harden or crack rubber
- Chemical attack from coolant breakdown or contamination
- Abrasion where hoses contact adjacent components or fastenings
- Loose or degraded clamps that allow leaks at joints
Timely replacement prevents coolant loss and the risk of engine overheating that can lead to more extensive repairs. Using correctly specified hoses and renewed clamps helps preserve the cooling circuit and supports reliable operation across driving conditions for Porsche models. Replace any hose showing swelling, cracking or soft spots and confirm connections while the system is cold.
Advantages- Direct-fit replacements engineered to match original dimensions and tolerances
- Options in reinforced rubber and silicone to suit temperature and service requirements
- Supplies commonly include compatible clips, seals and joining pieces for straightforward installation
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