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O-Ring seal for Joining socket for water pump housing. Porsche 996 Turbo / 997 Turbo / GT3 - 99970741140
99970741140
Vehicle Group
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- 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
O-ring seal for Joining socket for water pump housing, 28.00 x 4.50 mm
The Genuine Porsche 99970741140 O-ring seal is an OE replacement sealing ring for the joining socket on the water pump housing. It helps seal the coolant connection, maintain cooling system pressure and prevent leaks on selected Porsche 996 and 997 models. Ideal for use during water pump, thermostat, coolant flange or joining socket repairs.
Sold individually, 4 required per vehicle
Fits:
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT3 2000 - 2005
Porsche 997 Turbo / GT2 2007 - 2009
Porsche 997 GT2 RS 2011
Porsche 997 GT3 2007 - 2011
Diagram ref no 18
This O-ring fits in the engine cooling system, at the joining socket / coolant inlet flange connection for the water pump housing. It is positioned in the rear engine area where the coolant pipework connects to the water pump housing assembly.
Functions:
• Seals the joining socket connection at the water pump housing
• Helps prevent coolant leaks from the water pump housing area
• Maintains correct cooling system pressure
• Supports reliable coolant flow through the engine cooling circuit
• Helps protect surrounding engine components from coolant seepage
• Provides an OE-quality replacement seal for Porsche cooling system repairs
• Ensures correct fitment when refitting the joining socket, water pump housing or related coolant flange
O-ring seals can harden, flatten, crack or perish over time due to heat cycles, coolant exposure and engine vibration. Once the seal loses its elasticity, coolant can begin to seep or leak from the joining socket or water pump housing area. Replacing the O-ring with a Genuine Porsche OE seal helps restore the correct sealing performance and reduces the risk of coolant loss, pressure drop or overheating issues. It is also good practice to replace this seal whenever the joining socket or water pump housing is removed.
When to replace
• When coolant is leaking from the water pump housing or joining socket area
• During water pump, thermostat or coolant flange replacement
• When the joining socket is removed or refitted
• If the original O-ring is flattened, brittle, swollen or cracked
• During engine cooling system repairs or restoration work
• When carrying out preventative maintenance on older Porsche Turbo or GT3 models
• If the cooling system is losing pressure or showing signs of seepage
Where it fits on the car
This O-ring fits in the engine cooling system at the water pump housing area. On the diagram, it is shown as item number 18, sealing the coolant pipe/joining socket connection. It works with the adjoining coolant pipe fittings and sealing components to keep the water pump housing connection leak-free.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970741140
The product you are viewing cross references to these numbers
The Genuine Porsche 99970741140 O-ring seal is an OE replacement sealing ring for the joining socket on the water pump housing. It helps seal the coolant connection, maintain cooling system pressure and prevent leaks on selected Porsche 996 and 997 models. Ideal for use during water pump, thermostat, coolant flange or joining socket repairs.
Sold individually, 4 required per vehicle
Fits:
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT3 2000 - 2005
Porsche 997 Turbo / GT2 2007 - 2009
Porsche 997 GT2 RS 2011
Porsche 997 GT3 2007 - 2011
Diagram ref no 18
This O-ring fits in the engine cooling system, at the joining socket / coolant inlet flange connection for the water pump housing. It is positioned in the rear engine area where the coolant pipework connects to the water pump housing assembly.
Functions:
• Seals the joining socket connection at the water pump housing
• Helps prevent coolant leaks from the water pump housing area
• Maintains correct cooling system pressure
• Supports reliable coolant flow through the engine cooling circuit
• Helps protect surrounding engine components from coolant seepage
• Provides an OE-quality replacement seal for Porsche cooling system repairs
• Ensures correct fitment when refitting the joining socket, water pump housing or related coolant flange
O-ring seals can harden, flatten, crack or perish over time due to heat cycles, coolant exposure and engine vibration. Once the seal loses its elasticity, coolant can begin to seep or leak from the joining socket or water pump housing area. Replacing the O-ring with a Genuine Porsche OE seal helps restore the correct sealing performance and reduces the risk of coolant loss, pressure drop or overheating issues. It is also good practice to replace this seal whenever the joining socket or water pump housing is removed.
When to replace
• When coolant is leaking from the water pump housing or joining socket area
• During water pump, thermostat or coolant flange replacement
• When the joining socket is removed or refitted
• If the original O-ring is flattened, brittle, swollen or cracked
• During engine cooling system repairs or restoration work
• When carrying out preventative maintenance on older Porsche Turbo or GT3 models
• If the cooling system is losing pressure or showing signs of seepage
Where it fits on the car
This O-ring fits in the engine cooling system at the water pump housing area. On the diagram, it is shown as item number 18, sealing the coolant pipe/joining socket connection. It works with the adjoining coolant pipe fittings and sealing components to keep the water pump housing connection leak-free.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970741140
99970741140
The product you are viewing cross references to these numbers
Price: €11.71
In stock
Related products
Vehicle Group
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S2 3.0L 16V 1989-91
- 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
Information
Water Pump.
As one of the most important components within the engine cooling system, the water pump drives coolant through the engine block, cylinder head, radiator and heater circuit, helping to prevent overheating and maintain optimum engine performance. This OE Match replacement is ideal for routine maintenance, cooling system repairs and engine restoration projects.
What This Product Does:
Symptoms Of Wear Or Failure:
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410602124
The product you are viewing cross references to these numbers
The OE Match Water Pump is a high-quality replacement cooling system component designed to maintain the continuous circulation of coolant throughout the engine and radiator system. Manufactured to OE specifications for fit, function and durability, this water pump ensures efficient heat transfer and stable engine operating temperatures under all driving conditions.
Fits:
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S2 3.0L 16V 1989-91
- 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
As one of the most important components within the engine cooling system, the water pump drives coolant through the engine block, cylinder head, radiator and heater circuit, helping to prevent overheating and maintain optimum engine performance. This OE Match replacement is ideal for routine maintenance, cooling system repairs and engine restoration projects.
What This Product Does:
- Circulates coolant throughout the engine cooling system.
- Transfers heat away from the engine and into the radiator.
- Helps maintain correct engine operating temperatures.
- Supports efficient heater system performance.
- Prevents coolant stagnation and localised hot spots.
- Protects critical engine components from excessive heat.
Symptoms Of Wear Or Failure:
- Coolant leaks from the pump housing or shaft seal.
- Rising engine temperatures or overheating.
- Coolant loss without visible hose or radiator leaks.
- Grinding, whining or rumbling noises from the water pump bearing.
- Coolant residue or staining around the pump assembly.
- Excessive play in the water pump pulley.
- Reduced heater performance due to poor coolant circulation.
- Steam or coolant odours from the engine bay.
Why Replacement Matters:
- The water pump operates continuously whenever the engine is running and is exposed to constant rotation, pressure changes, coolant flow and temperature fluctuations. Over time, bearings, seals and impeller components can wear, reducing the pump's ability to circulate coolant effectively.
- A failing water pump can result in coolant leaks, poor cooling system performance and engine overheating. If left unresolved, overheating can cause serious engine damage, including warped cylinder heads, failed head gaskets and accelerated wear of internal components. Because the cooling system relies on consistent coolant circulation, a healthy water pump is essential for long-term engine reliability.
- Replacing a worn water pump restores efficient coolant flow, maintains proper engine temperatures and helps protect against costly overheating-related repairs. An OE Match replacement provides factory-style fitment, dependable performance and long-lasting durability, ensuring your Porsche cooling system operates as intended.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410602124
94410602124
94410600300
944106921X
944106921AX
The product you are viewing cross references to these numbers
Price: €142.80
In stock
Vehicle Group
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- 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
Information
This seal ring fits between the water thermostat and water pump.
Fits:
Porsche 924S 1986-88
Porsche 944
Porsche 968
Click 'Zoom in' for large parts diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95110615500
The product you are viewing cross references to these numbers
Fits:
Porsche 924S 1986-88
Porsche 944
Porsche 968
Click 'Zoom in' for large parts diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95110615500
95110615500
232.900
The product you are viewing cross references to these numbers
Price: €17.11
In stock
Vehicle Group
- 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
Information
Water Pump Gasket.
Fits:
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410613212
The product you are viewing cross references to these numbers
Fits:
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410613212
94410613212
The product you are viewing cross references to these numbers
Price: €17.31
Orderable