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Suspension & Axle

SET OF 4 for FRONT & REAR
Bilstein Replacement for the Original Spec
Fits: Cars with I475 PASM
Porsche Boxster 987 2005-08
Porsche Cayman 987C 2005-08
Cayman 2.9L 987C MKII 2009>>
Cayman S 3.4L 987C MKII 2009>>
Boxster 987 MKII 2.9L 2009-2012
Boxster S 987 MKII 3.4L 2009-2012
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BILSTEIN987B4P
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 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

SET OF 4 for FRONT & REAR
Bilstein Replacement for the Original Spec
Fits:
Porsche Boxster 987
Porsche Cayman 987C
ALL Cars with Standard Chassis
(*Not Cars with I475 PASM)
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BILSTEIN987B4
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 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 987 Boxster
Porsche 987C Cayman
Porsche 987.2 Boxster
Porsche 987C.2 Cayman
Porsche 997 Carrera & Turbo
Porsche 997.2 Carrera & Turbo
Please note this arm is not an adjustable type (not motorsport - M004 option)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CONTROLARM03
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 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 Turbo 2010-13
- 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 987 Boxster *Chassis from:
WP0ZZZ98Z6U703034 >>
WP0ZZZ98Z6U722299 >>
Porsche 987C Cayman *Chassis from:
WP0ZZZ98Z6U774552 >>
WP0ZZZ98Z6U783369 >>
Porsche 987.2 Boxster
Porsche 987C.2 Cayman
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CONTROLARM04
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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12

Fits:
Porsche 987 Boxster 2005-2012 FRONT
Porsche 987C Cayman 2005-2012 FRONT
Porsche 997 2006-2012 FRONT
Porsche 997 TURBO 2007-2013 FRONT
Please click 'Zoom in' to view the diagram.
Diagram ref no. 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734104302
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 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

(TRW are the Original Manufacture for Porsche)
Fits:
Porsche Boxster 987
Porsche Cayman 987C
Please click 'Zoom in' to see the diagram (No 8)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98733104304
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 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
This OE Match suspension set includes two rear lower control arms (2 × 98733104304), providing a complete left-and-right replacement for the rear axle of Porsche 987 Boxster and 987 Cayman models. These arms are engineered to replicate the geometry, strength, and bushing characteristics of the original Porsche components, ensuring precise wheel alignment, stable handling, and predictable chassis behaviour.
SET OF 2 - for left and right side.
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
Diagram ref no 8
This set is ideal for vehicles showing rear-end instability, knocking noises, or alignment issues caused by aged or worn control arm bushings.
• Part Numbers / Cross-References: 98733104304 (current), 98733104302 / 98733104303 (previous numbers)
• Position: Rear lower control arm / lateral link - connects rear axle assembly to chassis/subframe, controlling wheel lateral and longitudinal position under dynamic loading.
• Functions: Maintains correct wheel alignment geometry under load, ensures stable rear-end handling, helps manage camber and toe changes, absorbs suspension loads, supports consistent tyre contact and handling predictability.
The rear lower control arms maintain correct camber and toe alignment during suspension travel. They stabilise the rear axle under dynamic load and help ensure consistent tyre contact and grip. As a matched pair, they work together to deliver the balanced handling and responsiveness expected from a Porsche mid-engine chassis.
Benefits of replacing as a pair:
• Restores identical suspension behaviour on both sides
• Ensures consistent camber and toe alignment
• Eliminates uneven tyre wear caused by mismatched bushings
• Improves high-speed stability and cornering predictability
• Ideal for full rear suspension refresh or alignment correction
With time, the bushings and joints inside these arms deteriorate, causing unwanted movement, clunks, instability and poor alignment. Replacing both arms ensures complete restoration of rear suspension accuracy, improving handling sharpness, road feel and overall safety.
When to Replace:
• Knocking or clunking noises from the rear over bumps
• Excessive play in rear suspension arms during inspection
• Uneven or premature rear tyre wear
• Alignment cannot be maintained (camber/toe constantly shifting)
• Rear-end feels unstable during cornering or acceleration
• Performing a full suspension overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98733104304
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 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
The high-quality replacement built to OE specifications, it delivers the same fit, strength, and performance as the original part. This suspension component connects the wheel hub to the chassis, maintaining proper alignment and ensuring stable handling.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987 Boxster 2005 - 2012
Porsche 987c Cayman 2006 - 2012
Porsche 996 C2 / C4 1997 - 2005
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 997 MKI 2006 - 2009
Porsche 997 GT3 2006 - 2009
Diagram ref no 13
This product supersedes Porsche's old part numbers:
99633104506, 99633104508, 99633104510, 99633104512, 99733104504 , 99633104512
What this product does:
• Provides a secure connection between the chassis and wheel hub
• Maintains wheel alignment for safe, predictable handling
• Absorbs suspension forces while keeping steering precise
Over time, control arms can bend, wear, or develop excessive play in the bushings and ball joints. This can cause uneven tire wear, knocking noises, wheel alignment issues, and a noticeable loss of steering precision. Replacement will restore the correct wheel alignment and suspension stability for which your Porsche was designed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733104505
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 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 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
The high-quality replacement built to OE specifications, it delivers the same fit, strength, and performance as the original part. This suspension component connects the wheel hub to the chassis, maintaining proper alignment and ensuring stable handling.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987 Boxster 2005 - 2012
Porsche 987c Cayman 2006 - 2012
Porsche 996 C2 / C4 1997 - 2005
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 997 MKI 2006 - 2009
Porsche 997 GT3 2006 - 2009
Diagram ref no 12, 13, 15, 16
This product supersedes Porsche's old part numbers:
99633104506, 99633104508, 99633104510, 99633104512, 99733104504 , 99633104512
What this product does:
• Provides a secure connection between the chassis and wheel hub
• Maintains wheel alignment for safe, predictable handling
• Absorbs suspension forces while keeping steering precise
Over time, control arms can bend, wear, or develop excessive play in the bushings and ball joints. This can cause uneven tire wear, knocking noises, wheel alignment issues, and a noticeable loss of steering precision. Replacement will restore the correct wheel alignment and suspension stability for which your Porsche was designed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733104505
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 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 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
Suitable for models with standard suspension (PR 029) but not sports suspension or PASM (PR 475).
Porsche 987-1 Boxster 2.7L 2005*
Porsche 987-1 Boxster S 3.2L 2005*
Porsche 987-1 Boxster 2.7L 2006-08
Porsche 987-1 Boxster S 3.2L 2006
Porsche 987-1 Boxster S 3.4L 2007-08
Porsche 987-1 Cayman 2.7L 2006-08
Porsche 987-1 Cayman S 3.4L 2006-08
*NOTE - For 2005 model year Boxsters, there is a VIN split:
2.7L models – Compatible from VIN F 98-5S700086 onwards (Stuttgart, Germany) and F 98-5U701650 onwards (Uusikaupunki, Finland).
3.2L S models – Compatible from VIN F 98-5S720068 onwards (Stuttgart, Germany) and F 98-5U721707 onwards (Uusikaupunki, Finland).
Diagram ref. 7.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734353144504
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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Suitable for models with standard suspension (PR 029) but not sports suspension or PASM (PR 475).

Porsche 987-1 Boxster 2.7L 2005*
Porsche 987-1 Boxster S 3.2L 2005*
Porsche 987-1 Boxster 2.7L 2006-08
Porsche 987-1 Boxster S 3.2L 2006
Porsche 987-1 Boxster S 3.4L 2007-08
Porsche 987-1 Cayman 2.7L 2006-08
Porsche 987-1 Cayman S 3.4L 2006-08
*NOTE - For 2005 model year Boxsters, there is a VIN split:
2.7L models – Compatible from VIN F 98-5S700086 onwards (Stuttgart, Germany) and F 98-5U701650 onwards (Uusikaupunki, Finland).
3.2L S models – Compatible from VIN F 98-5S720068 onwards (Stuttgart, Germany) and F 98-5U721707 onwards (Uusikaupunki, Finland).
Diagram ref. 7.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734353144504
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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Suitable for models with standard suspension (PR 029) but not sports suspension or PASM (PR 475).

Porsche 987-1 Boxster 2.7L 2005*
Porsche 987-1 Boxster S 3.2L 2005*
Porsche 987-1 Boxster 2.7L 2006-08
Porsche 987-1 Boxster S 3.2L 2006
Porsche 987-1 Boxster S 3.4L 2007-08
Porsche 987-1 Cayman 2.7L 2006-08
Porsche 987-1 Cayman S 3.4L 2006-08
*NOTE - For 2005 model year Boxsters, there is a VIN split:
2.7L models – Compatible from VIN F 98-5S700086 onwards (Stuttgart, Germany) and F 98-5U701650 onwards (Uusikaupunki, Finland).
3.2L S models – Compatible from VIN F 98-5S720068 onwards (Stuttgart, Germany) and F 98-5U721707 onwards (Uusikaupunki, Finland).
Kit Contents:
2x OE Match Shock Absorbers (Standard Replacement)
2x OE Match Coil Springs (Standard Replacement)
2x OE Match Top Mounts with Bearings
2x OE Match Coil Spring Support Rings
2x OE Match Shock Absorber Compensating Plates (3mm)
2x OE Match Shock Absorber Compensating Plates (6.5mm)
4x OE Match Upper & Lower Stop Plates / Washers
1x OE Match Bump Stop & Dust Cover Kit
2x OE Match M14 x 1.5 Nuts for Shock Absorber
2x OE Match Cone Washers
6x OE Match M8 Lock Nuts for Top Mounts
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FRONTSUSPENSIONKIT987-1
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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
FRONT

FRONT
Porsche 997
Porsche 987 Boxster >>2007
Porsche 987C Cayman >>2007
Please click 'Zoom in' to view the diagram
Items 4, 5, 7, 9, 10, 11, 12, 22, 25.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BOLTKIT9971
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 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 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
FRONT
FRONT
Porsche 997
Porsche 987 Boxster >>2007
Porsche 987C Cayman >>2007
Please click 'Zoom in' to view the diagram
Items 4, 5, 7, 9, 10, 11, 12, 22, 25.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BOLTKIT9971.OEM
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 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 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
The rear control arm (also known as the “coffin arm”) slim type, with lower ball joint) is designed for the rear axle of multiple Porsche models including the 987 Boxster/Cayman, 981 Boxster/Cayman, 718 (982) Boxster/Cayman and 997-series Carrera, Turbo and GT2/GT3.
SET OF 2
Kits includes:
2 x Rear Control arms (Slim Type) 'Coffin arm' Ref: 98133105302
2 x Eccentric washer for alignment Ref: 99733121703
2 x Rear lower control arm adjust bolt. Ref: 99733121702
2 x Shock absorber hexagon hut. Ref: 99908444501

Porsche 997 Turbo / GT2 (Excl. RS) 2007 - 2013
Porsche 997 GT3 (Excl. RS) 2007 - 2011
Porsche 997.2 Carrera 2009 - 2012
Porsche 987.2 Boxster 2009 - 2012
Porsche 987.2 Cayman 2009 - 2012
Porsche 981 Boxster / S 2012 - 2016
Porsche 981 Cayman / S 2014 - 2016
Porsche 981 Boxster Spyder 2016
Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Cayman 2017>>
Must be replaced in pairs
Porsche 997.1 Carrera 2007 - 2009
Porsche 987.1 Boxster 2007 - 2008
Porsche 987.1 Cayman 2007 - 2008
• Position on Vehicle: Rear axle, control arm position linking rear wheel carrier / suspension to chassis, controlling camber, toe and lateral track stability.
• Cross-Reference / Alternative Numbers: OE ref part 981 331 053 02; also referenced 99733105301 / 99733105302 / 99733105303 / 98133105300 / 98133105301.
Built to meet factory specification and supplied with a premium ball joint, it restores accurate alignment, improves handling precision and ensures long-term durability.
The rear control arm is a critical component in maintaining rear axle geometry, wheel alignment, and dynamic stability under acceleration, cornering or load. A worn, bent or loose control arm can lead to:
• Rear instability or wandering at speed
• Uneven or rapid tyre wear on the rear axle
• Clunking or knocking noises from the rear suspension
• Loss of alignment control (camber/toe drift).
Replacing the arm ensures the rear suspension operates as intended, restoring precision and safety.
When and why to replace:
• You hear a pronounced knock or clunk from the rear suspension when hitting bumps or changing direction.
• Rear tyres wear unevenly or you cannot hold rear alignment specification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98133105302
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 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) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
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- 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 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 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- 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)
Price is for EACH SIDE
Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, supporting plate, Compensating plate, Washers & Nut.
Fits:
Porsche 987 Boxster 2005-08
Porsche 987 Boxster 2009-12
Porsche 987C Cayman 2006-08
Porsche 987C Cayman 2009-12
Porsche 997 GEN1 C2
Porsche 997 GEN2 C2 std suspension
Parts Diagram ref No's 2, 4, 5, 6, 8, 9, 10, 11.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT15
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 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- 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
-
Water cooling 3 - 9720, 9721, 9723 - 987C.1 Cayman 2.7L / 3.4L 2006-08 105-015
-
Manual gearbox / Transmission suspension / Threaded joint for Engine - G8701+ PR:481, 5th-speed manual - 987C.1 Cayman 2.7L 2007-08 306-000
-
Tiptronic / Transmission suspension / Threaded joint for Engine - A8702,A8721+ PR:249 - 987C.1 Cayman 2006-08 370-000
-
Cross member / Wishbone 987C.1 Cayman 2006-08 401-000
-
Suspension / Shock absorber strut 987C.1 Cayman 2006-08 402-000
-
Anti-roll bar 987C.1 Cayman 2006-08 402-005
-
Rear axle / Wheel carrier / Guide / Wheel hub 987C.1 Cayman 2006-08 501-000
-
Anti-roll bar 987C.1 Cayman 2006-08 501-003
-
Shock absorbers / Coil spring 987C.1 Cayman 2006-08 502-000
Porsche Suspension & Axle Parts
Porsche suspension systems are engineered with precision to deliver sharp handling, ride comfort, and maximum performance. Whether on the road or track, your Porsche relies on a finely tuned suspension and axle setup to keep you in control. When components wear out, the ride becomes rough, handling suffers, and safety can be compromised.
At Design911, we supply a full range of suspension and axle parts for classic and modern Porsche models — from shock absorbers and coil springs to control arms and ball joints - helping you maintain your car’s legendary driving dynamics.
Signs of Worn Shocks or Struts
Shock absorbers and struts are essential for keeping your
Porsche stable over bumps and through corners. Some signs they may need
replacement include:
- Excessive
Bouncing – car continues to bounce after hitting bumps
- Poor
Cornering Stability – leaning hard into corners, reduced grip
- Fluid
Leaks – damp or oily patches on shocks/struts
- Uneven Tyre Wear – poor damping leads to increased tyre wear
If left unchecked, worn shocks or struts not only reduce ride comfort but can also compromise safety.
Common Porsche Suspension Issues
Different Porsche models can face specific
suspension-related faults. The most frequent include:
- Lower
Track Control Arm Bushings - Failure
causes squeaking noises, uneven tyre wear, and eventually knocking sounds
over rough roads.
- Broken
Coil Springs - Seen
in models such as the Porsche Boxster. Symptoms include groaning noises
when steering and clicking or knocking over bumpy surfaces.
- Leaking
or Worn Shock Absorbers - Identified
by damp, oily residue on the shock body. This is one of the most common
suspension failures over time.
- Ball Joint Wear - Worn joints reduce steering precision and can lead to loss of control if ignored.
Fortunately, most of these issues can be resolved by simply replacing the affected parts with OEM or high-quality aftermarket components.
Why Maintain Suspension & Axle Components?
Why Choose Design911?
Explore our Porsche Suspension & Axle range today – from shocks and struts to springs and bushings – and restore the sharp handling and comfort your Porsche was designed to deliver.