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Cross brace rear suspension. Porsche 996 / 997.1 ❭ 99733108103
- 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 2007-09
- Porsche 997 MKII GT3 2010-11
Mounted across the rear axle, it reinforces the suspension subframe and strut mounting points, reducing flex under load and improving overall stability. By keeping the suspension geometry tight, this brace helps maintain precise handling and extends the life of surrounding components.
Fits:
Porsche 996 C2 / C4 / C4S - 1997 to 2004
Porsche 996 turbo - 2000 to 2005
Porsche 996 GT3 - 1999 to 2005
Porsche 997.1 C2 / C4 /C4S - 2005 to 2008
Porsche 997.1 turbo - 2007 to 2008
Porsche 997 GT3 - 2007 to 2012
Porsche 997.1 - 2005 to 2008
Diagram ref no 10
What It Does:
- The bracket reinforces the rear suspension geometry. It braces your Porsche's structure to reduce flex under load, improve stability, and maintain alignment under cornering or when encountering bumps.
- Helps distribute loads through the rear suspension so that components like arms, bushings, struts, and mounts don’t shift or wear prematurely.
Why Replacement Matters:
- If this bracket is damaged, bent, or weakened, you may experience rear-end instability, excessive movement in suspension under load, or handling that feels loose or unpredictable.
- Worn or misaligned brackets allow structural flex, which can accelerate wear in suspension arms and bushings.
- Proper reinforcement helps maintain ride and safety when driving hard or when the vehicle is aged.
You may need to replace the support brace if you hear clunking or knocking from the rear suspension, notice uneven tire wear, or feel looseness in the car’s handling. A visual inspection showing cracks, bends, or corrosion is another clear sign. It’s also smart to check this part after any rear impact, even a minor one, as damage can affect stability and alignment.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733108103
The product you are viewing cross references to these numbers
This Genuine Porsche hexagon-head bolt is used to secure the rear suspension cross-member on Porsche 996 and 997 models.
Sold each, required 4 per vehicle.
Fits:
Porsche 996 1998 - 2004 all models
Porsche 997.1 2005 - 2008 all models
Porsche 997.2 2009 - 2012 all models
Diagram ref no 4
Bolts securing suspension cross-members endure constant dynamic stress, heat, and exposure to moisture. Over time, this can lead to corrosion, stretching, or loss of clamp force, potentially compromising alignment and safety.
When to Replace:
• During rear subframe or cross-member removal/reinstallation
• If original bolts show corrosion, thread damage, or deformation
• When performing a complete suspension overhaul or alignment service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90037813901
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- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp)
- Porsche Boxster 718 2.0L PDK (300 Bhp)
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster T 718 2.0L Manual (300 Bhp)
- Porsche Boxster T 718 2.0L PDK (300 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300Bhp)
- Porsche Cayman 718 2.0L PDK (300Bhp)
- Porsche Cayman S 718 2.5L Manual (350Bhp)
- Porsche Cayman S 718 2.5L PDK (350Bhp)
- Porsche Cayman T 718 2.0L Manual (300Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 981 Boxster 2012>>2016
Porsche 981 Cayman 2014>>2016
Porsche 981 Boxster Spyder 2016>>2016
Porsche 981 Cayman GT4 2016>>2016
Porsche 982 Boxster (718) 2017>>
Porsche 982 Cayman (718) 2017>>
Porsche 982 Boxster Spyder (718) 2019>>
Porsche 982 Cayman GT4 (718) 2019>>
Porsche 991.1 Carrera MKI 2012>>2016
Porsche 991.2 Carrera MKII 2017>>2019
Porsche 991 Turbo / Turbo S / GT2 RS MKI / MKII 2014>>2020
Porsche 991 R / GT3 / RS / Speedster MKI / MKII 2014>>2021
Diagram Ref No 1
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