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O-Ring seal for Joining socket for water pump housing. Porsche 996 Turbo / 997 Turbo / GT3 ❭ 99970741140
- 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
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
- 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

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
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Fits:
Porsche 924S 2.5L 1986-88
Porsche 944 2.5L 1982-87
Porsche 944 Turbo 2.5L 1986-91
Porsche 944 Turbo S 2.5L 1988-91
Click "zoom in" for lagre parts diagram.
Diagran ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410613204
The product you are viewing cross references to these numbers
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988

Fits:
Porsche 944 Turbo 2.5L 1986-91
Porsche 944 Turbo S 2.5L 1988-91
NOTE: Water Pump COMES WITH MOUNTING GASKET.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95110602110
The product you are viewing cross references to these numbers
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