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Steering rack boot seal ring. Porsche 987 Boxster / 987C Cayman / 996 / 997 - 99734737300
99734737300
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- 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
- 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 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 Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Information
Steering rack boot seal ring.
Located inside the steering rack housing (rack & pinion assembly) as an inner seal ring around gear housing/rack interface — critical for containing hydraulic fluid and ensuring rack integrity.
Sold each, 2 required per vehicle.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2006 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 997.2 2009 - 2012
Diagram ref no 4
Even though it’s a small part, the seal ring plays a vital role in your Porsche’s hydraulic steering system. When it fails, you may experience fluid leaks, loss of hydraulic assist, play in the steering or reduced feedback - all affecting handling, safety and longevity of steering components. Replacing the seal ring with the genuine part restores correct sealing, hydraulic pressure retention and the precise steering feel your Porsche expects.
When and why to replace:
• Evident steering fluid seepage around the rack housing or boots, indicating internal seal failure.
• Loss of power-steering assist or degraded steering feel, especially at low speeds or when cold.
• During steering rack replacement or rebuild – when bearing access is available and you want to prevent future leaks.
• As part of front-end or steering system overhaul on high-mileage vehicles where original seals may have aged or hardened.
• Whenever the steering rack hydraulic system is opened or dismantled – fitting a new genuine seal ring ensures proper long-term service.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734737300
The product you are viewing cross references to these numbers
Located inside the steering rack housing (rack & pinion assembly) as an inner seal ring around gear housing/rack interface — critical for containing hydraulic fluid and ensuring rack integrity.
Sold each, 2 required per vehicle.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2006 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 997.2 2009 - 2012
Diagram ref no 4
Even though it’s a small part, the seal ring plays a vital role in your Porsche’s hydraulic steering system. When it fails, you may experience fluid leaks, loss of hydraulic assist, play in the steering or reduced feedback - all affecting handling, safety and longevity of steering components. Replacing the seal ring with the genuine part restores correct sealing, hydraulic pressure retention and the precise steering feel your Porsche expects.
When and why to replace:
• Evident steering fluid seepage around the rack housing or boots, indicating internal seal failure.
• Loss of power-steering assist or degraded steering feel, especially at low speeds or when cold.
• During steering rack replacement or rebuild – when bearing access is available and you want to prevent future leaks.
• As part of front-end or steering system overhaul on high-mileage vehicles where original seals may have aged or hardened.
• Whenever the steering rack hydraulic system is opened or dismantled – fitting a new genuine seal ring ensures proper long-term service.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734737300
99634737300
99734737300
The product you are viewing cross references to these numbers
Price: £3.76
In stock
Related products
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- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
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- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
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Information
Steering tie rod end inner. Front axle. Fits left and right. Price is for each.
Fits:
Porsche 971 Panamera 05/2016-2021
Porsche 971.2 Panamera 2021-2024
Porsche 976 Panamera 2024>>
Porsche 9J1 Taycan 2020-2024
Porsche 9J1.2 Taycan 2024>>
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
971423810
The product you are viewing cross references to these numbers
Fits:
Porsche 971 Panamera 05/2016-2021
Porsche 971.2 Panamera 2021-2024
Porsche 976 Panamera 2024>>
Porsche 9J1 Taycan 2020-2024
Porsche 9J1.2 Taycan 2024>>
Diagram ref no 6
Related reference numbers
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971423810
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Price: £187.32
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Vehicle Group
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- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD 2017-20
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD Executive 2017-20
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- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
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Information
Steering tie rod end inner. Front axle. Fits left and right. Price is for each.
Fits:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
971423810
The product you are viewing cross references to these numbers
Fits:
Porsche 971 Panamera 05/2016-2021
Porsche 971.2 Panamera 2021-2024
Porsche 976 Panamera 2024>>
Porsche 9J1 Taycan 2020-2024
Porsche 9J1.2 Taycan 2024>>
Diagram ref no 6
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971423810
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971423810B
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Price: £38.50
In stock