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Anti Roll Bar Bracket
- 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 Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- 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 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 Carrera GT 2003-06

Fits:
Porsche 986 Boxster 1997-04
Porsche 996 Carrera 1998-05
Porsche 996 Turbo / GT2 / GT3
Porsche Carrera GT 2004-06 (FRONT & REAR)
Click 'Zoom in' for large parts diagram.
Diagram ref no 3.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634377703
The product you are viewing cross references to these numbers
- 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 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

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI 2005-08
Porsche 987 Boxster MKII 2009>>
Porsche 987C Cayman MKI 2005-08
Porsche 987C Cayman MKII 2009>>
Porsche 996 Carrera 1998-05
Porsche 996 Turbo / GT2 / GT3 MKI
Porsche 997 Carrera MKI & MKII
Porsche 997 Turbo / GT2 / GT3
Click 'Zoom in' for large parts diagram.
Diagram ref no 3.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99633377701
The product you are viewing cross references to these numbers
- 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 Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- 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
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI 2005-08
Porsche 987 Boxster MKII 2009>>
Porsche 981 Boxster
Porsche 987C Cayman MKI 2005-08
Porsche 987C Cayman MKII 2009>>
Porsche 981C Cayman
Porsche 996 Carrera 1998-05
Porsche 996 Turbo / GT2 / GT3 MKI
Porsche 997 Carrera MKi & MKII
Porsche 997 Turbo / GT2 / GT3
Click 'Zoom in' for large parts diagram.
Diagram ref no 3.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99633377701
The product you are viewing cross references to these numbers
- 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 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

Fits:
Porsche 986 Boxster 1997-04
Porsche 996 Carrera 1998-05
Porsche 996 Turbo / GT2 / GT3
Click 'Zoom in' for large parts diagram.
Diagram ref no 4.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
N10404306
The product you are viewing cross references to these numbers
- 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 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
Genuine Porsche OE bolt for the stabiliser bar bush clamp on selected Porsche Boxster, Cayman, 996 and 997 models. This original Porsche hexagon bolt is used to secure the anti-roll bar / stabiliser bar bush clamp, helping hold the stabiliser bar mounting securely in position.
Sold individually
Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.2 Carrera 2009 - 2012
Porsche 997 Turbo / GT2 / GT3 2005 - 2013
Diagram ref no 4
This bolt is used in the stabiliser bar / anti-roll bar mounting system on selected Porsche models.
What This Part Does / Functions
• Secures the stabiliser bar bush clamp to the vehicle
• Helps hold the anti-roll bar mounting bracket in place
• Maintains correct stabiliser bar positioning
• Supports proper suspension and anti-roll bar operation
• Helps prevent movement, knocking or looseness at the bush clamp
• Provides correct OE Porsche thread, length and head specification
• Replaces a corroded, damaged, stretched or missing original bolt
• Maintains factory Porsche suspension hardware quality.
Why Replace This Part?
Stabiliser bar clamp bolts are exposed to road dirt, water, corrosion, suspension load and repeated service removal. Over time, the bolt can rust, seize, round off or become damaged. A worn or incorrect bolt may not clamp the stabiliser bar bush bracket securely, which can lead to knocking noises, unwanted bar movement or poor suspension performance. Replacing it with a Genuine Porsche OE bolt helps ensure the stabiliser bar bush clamp is secured correctly using factory-specified hardware.
When to Replace This Part
• When replacing stabiliser bar bushes
• When replacing anti-roll bar clamps or brackets
• If the original bolt is corroded, seized, rounded or damaged
• If the bolt is missing or incorrect
• During suspension overhaul or restoration
• If knocking noises are traced to loose stabiliser bar mounting hardware
• When removing the stabiliser bar assembly for service
• When rebuilding the suspension with correct Genuine Porsche hardware.
Where It Fits on the Car
This bolt fits at the stabiliser bar / anti-roll bar bush clamp mounting point. It secures the clamp or bracket that holds the stabiliser bar bush in position.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90037805501
The product you are viewing cross references to these numbers
- 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 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
OE Match bolt for the stabiliser bar bush clamp on Porsche Boxster, Cayman, 996, and 997 models. This replacement fixing secures the anti-roll bar bush clamp to help maintain correct stabiliser bar location and suspension control.
Sold individually, 4 required per vehicle
Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.2 Carrera 2009 - 2012
Porsche 997 Turbo / GT2 / GT3 2005 - 2013
Diagram ref no 4
The bolt holds the stabiliser bar bush clamp in place, keeping the anti-roll bar correctly secured to the chassis or suspension mounting point. A secure clamp fixing helps the stabiliser bar operate correctly and reduces unwanted movement, knocking, or looseness in the suspension system.
Functions
• Replaces the stabiliser bar bush clamp bolt
• Secures the anti-roll bar bush clamp
• Helps keep the stabiliser bar correctly located
• Supports stable suspension and anti-roll bar operation
• Used during anti-roll bar bush, clamp, or suspension service
• Replaces corroded, rounded, stretched, damaged, or missing original bolts
• OE Match replacement fixing for Porsche suspension repair.
Why Replace This Part?
Stabiliser bar clamp bolts are exposed to road dirt, moisture, corrosion, vibration, and suspension movement. A worn, corroded, rounded, seized, or damaged bolt can make correct clamp installation difficult and may reduce secure mounting of the anti-roll bar bush. Replacing the bolt during stabiliser bar bush or clamp service helps restore reliable suspension fixing and correct anti-roll bar operation.
When to Replace This Part
• The stabiliser bar bush clamp is being removed or replaced
• Anti-roll bar bushes are being renewed
• The original bolt is corroded, rounded, seized, stretched, or damaged
• Suspension knocking or movement is being investigated
• Anti-roll bar service or restoration is being carried out
• The bolt is missing or no longer tightens correctly
• Preventative replacement is required during suspension repair.
Where it fits on the car
This bolt fits at the stabiliser bar bush clamp mounting point. It secures the clamp that holds the anti-roll bar mounting bush in position. Exact location can vary depending on model and front or rear stabiliser bar layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90037805501
The product you are viewing cross references to these numbers

Anti-Roll Bars (ARB’s) play an important role in a vehicle’s suspension system, helping to reduce body roll by transferring cornering load from one side of a vehicle to the other.
Often mounted to the vehicle’s chassis with rubber bushes, these bushes ensure the bar works as intended. To prevent the anti-roll bar from moving laterally within its mounts when turning, OE manufacturers will either bond the bushes to the bar, add dead-stops to the bar itself, or rely solely on the clamping pressure of the rubber.
But what happens when those bushes wear and need to be replaced? Often anti-roll bars with bonded bushes come as a costly complete assembly, so the alternative is to fit a more cost-effective unbonded polyurethane replacement, like the many we offer.
In most cases, friction from the bush will prevent any side-to-side bar movement. Still, when turning aggressively or cornering at higher speeds, a laterally shifting anti-roll bar decreases the efficiency and effectiveness of the bar, changing the dynamics of your suspension system in unpredictable ways. It also poses the risk of the bar fouling on other areas of the vehicle or suspension system.
-
stabiliser 986 Boxster 1997-04 402-05
-
steering outer tube, steering shaft, steering wheels 986 Boxster 1997-04 403-05
-
stabiliser 986 Boxster 1997-04 501-03
-
exhaust system 987 Boxster / Boxster S 2005-08 202-00
-
stabiliser 987 Boxster / Boxster S 2005-08 501-03
-
battery, power distributor, starter, generator 986 Boxster / Boxster S 1997-04 902-05
-
Anti-roll bar 987.2 Boxster / Boxster S 2009-12 501-003
-
Anti-roll bar 981 Boxster / Boxster S 2012-16 501-003
-
Anti-roll bar 981.SP Boxster Spyder 2016 501-003
Porsche Anti-Roll Bar Brackets | Design911 Precision Mounts for Suspension Stability & Control
Anti-roll bar brackets are crucial mounting components that secure the anti-roll bar (sway bar) to your Porsche’s chassis, allowing it to function correctly during cornering and body movement. These brackets keep the anti-roll bar firmly aligned, ensuring the suspension maintains balance, grip, and predictable handling under load. Without strong, well-fitted brackets, your Porsche’s anti-roll system cannot effectively reduce body roll or maintain stable steering response.
At Design911, we stock a premium range of anti-roll bar brackets, clamps, and mounting hardware designed for strength, accuracy, and durability. Manufactured from reinforced steel or lightweight alloy, these components provide secure attachment and resistance against vibration, heat, and road stress. Ideal for routine maintenance, suspension restoration, or performance upgrades, our brackets help keep your Porsche’s suspension system operating with precision and confidence.
What Do Anti-Roll Bar Brackets Do?
Anti-roll bar brackets secure the anti-roll bar to the vehicle’s subframe or chassis, enabling the bar to twist and counteract body roll effectively.
Core Functions:
• Mount and stabilise the anti-roll bar to maintain alignment.
• Support proper bar movement under cornering forces.
• Ensure secure and vibration-free attachment to the chassis.
• Prevent unwanted flex, noise, or bar misalignment.
• Enhance the consistency and precision of suspension performance.
High-quality anti-roll bar brackets ensure your Porsche’s suspension delivers smooth, controlled, and stable handling during dynamic driving.
Why Do Anti-Roll Bar Brackets Fail or Degrade?
Brackets are constantly subjected to torsional forces, corrosion, and environmental wear, especially on performance and older vehicles.
Common Causes of Failure Include:
• Corrosion or rust weakening the bracket’s structure.
• Wear or cracking due to continuous suspension load.
• Deformation from impact or heavy cornering forces.
• Loose fittings causing excessive bar movement or noise.
• Age-related fatigue or material degradation.
When anti-roll bar brackets fail, the sway bar loses stability and effectiveness — resulting in poor handling, clunking noises, and reduced chassis control.
Why Replace or Upgrade Your Porsche Anti-Roll Bar Brackets?
Replacing worn or damaged brackets restores suspension integrity and eliminates unwanted flex or movement. Upgraded materials and reinforced designs improve strength, handling precision, and long-term durability.
Key Benefits:
• Restores anti-roll bar stability and performance.
• Reduces noise, vibration, and body roll.
• Improves cornering response and suspension consistency.
• Precision-engineered for perfect alignment and fitment.
• Available for Porsche 911, 944, 968, Boxster, Cayman, Cayenne, and Macan
models.
• Ideal for restoration, maintenance, or performance applications.
Design911’s Porsche anti-roll bar brackets are built for strength, precision, and longevity — ensuring your suspension system performs exactly as intended, mile after mile.
Highlights
• Premium Porsche anti-roll bar brackets, clamps, and
mounts.
• Constructed from corrosion-resistant steel or alloy.
• Engineered for perfect fitment and vibration resistance.
• Restores suspension stability and cornering control.
• Suitable for both classic and modern Porsche models.
• Perfect for servicing, restoration, or track preparation.