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Shock Absorber Parts FRONT
- 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 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
This is for the shock absorber as an additional spring, also known as a bump stop, stopper or helper spring, designed for the front strut assemblies on Porsche 997 models equipped with the Sport chassis (option codes I030 or I480). Front axle suspension assembly for Porsche 996/997 (1998–2012), serving as a rubber stop or bushing integrated into the strut structure.
Fits:
Porsche 997 C2 / C2S / C4 / C4S MKI 2005-08 - Cars with SPORT chassis (Option code: I030/I480)
Porsche 997 C2 / C2S / C4 / C4S MKII 2009-12 - Cars with SPORT chassis (Option code: I030)
Porsche 996 C2 / C2S / C4 / C4S - Cars with SPORT chassis (Option code: IX74 / M030)
This acts as a progressive load-bearing element, cushioning the suspension when the strut nears full compression. It helps prevent harsh bottoming-out, protecting both the strut and chassis from damage during aggressive driving or over bumps.
These components maintain ride quality and handling performance, especially under heavy loading or spirited cornering, keeping the suspension linear and controlled.
Common Issues & Considerations
Wear or Deterioration: Over time, the rubber can compress, crack, or lose elasticity, diminishing its effectiveness. This can lead to harsher suspension impacts at full compression.
Noise or Harsh Feedback: A worn or hardened bump stop can transmit noise or impacts through the cabin, particularly over rough roads or speed bumps.
Sport vs. Standard Suspension: These parts are specific to Sport chassis models. Non-sport setups may not have the same bump stops or use different part numbers, so swapping or replacing must be done accordingly.
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634398009
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
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
This kit is comprised of the following items:
- 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
Price is for BOTH SIDES
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.
SUSPENSIONKIT15X
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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 C2 3.6L 09/01-2005
- 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

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2005>>
Porsche 996 C2 1998-05 (without sport suspension)
Porsche 997 MKI C2 / C2S 2005-08
Porsche 997 MKII C2 / C2S 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 3 & 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734301801
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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 C2 3.6L 09/01-2005
- 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
Shock Absorber Supporting mount complete with Front bearing 99634351505.
SET OF 2
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2005>>
Porsche 996 C2 1998-05 (without sport suspension)
Porsche 997 MKI C2 / C2S 2005-08
Porsche 997 MKII C2 / C2S 2009-12
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734301801
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
99734301501 (LEFT) & 99734301601 (RIGHT)

Fits:
Porsche 997 C4 / C4S MKI 2007-08
Porsche 997 C4 / C4S MKII 2009-12
Porsche 997 TURBO MKI & MKII 2007>>
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734301516KIT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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 C2 3.6L 09/01-2005
- 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

Fits:
Porsche 986 Boxster 1998-04
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2006-08
Porsche 987C.2 Cayman 2009-12
Porsche 996 C2 1998-05
Porsche 997.1 C2 / C4 2005-08
Porsche 997.1 Turbo / GT2 2007-10
Porsche 997.2 C2 / C4 2009-12
Porsche 997.2 Turbo / GT2 2011-13
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970345740
The product you are viewing cross references to these numbers
- 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
This OE Match front shock absorber additional spring is a replacement suspension bump stop / auxiliary spring component for Porsche 997.1 and 997.2 models. It is designed to match the original-style fitment and function, helping support the front shock absorber assembly and protect suspension travel.
Sold individually, 2 required - fits left or right suspension strut
Fits:

Cars with standard chassis (Option code: I029) & PASM (Option code: I475)
Porsche 997.1 C2 / C2S 2005 - 2008
Porsche 997.1 C4 / C4S 2005 - 2008
Porsche 997.2 C2 / C2S 2009 - 2012
Porsche 997.2 C4 / C4S 2009 - 2012
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 Turbo 2010 - 2013
Diagram ref no 9
The shock absorber additional spring works with the front suspension strut assembly to help support suspension travel and damping control. It assists the shock absorber during compression and helps protect suspension components from excessive movement or harsh bottoming under load.
Functions
• Replaces the front shock absorber additional spring
• Fits left or right front shock absorber assembly
• Helps support suspension compression control
• Assists the shock absorber during suspension travel
• Helps reduce harsh bottoming and impact loads
• Replaces worn, split, compressed, damaged, or missing original springs
• OE Match replacement for Porsche 997 front suspension repair.
Why Replace This Part?
Shock absorber additional springs can wear, compress, split, deteriorate, or become damaged due to age, road impact, suspension load, heat, and moisture. A worn or missing additional spring can reduce suspension control, cause harsh ride quality, increase noise over bumps, or place extra stress on related suspension components. Replacing it helps restore correct front suspension function and ride control.
When to Replace This Part
• The front shock absorbers are being replaced or serviced
• The additional spring is worn, split, compressed, damaged, or missing
• Front suspension knocks, harshness, or bottoming is present
• Suspension travel feels poorly controlled
• Strut top mounts, bump stops, or related components are being renewed
• The front suspension assembly has been removed
• Preventative replacement is being carried out during suspension overhaul.
Where it fits on the car
This additional spring fits on the front shock absorber / strut assembly on Porsche 997.1 and 997.2 models. It can be used on the left or right front shock where part number 99634330102 is specified.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634330102
The product you are viewing cross references to these numbers
- 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

Fits:

Cars with standard chassis (Option code: I029) & PASM (Option code: I475)
Porsche 997 C2 / C2S MKI & MKII 2005-12
Porsche 997 C4 / C4S MKI & MKII 2005-12
Porsche 997 Turbo MKI & MKII 2007-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634330102
The product you are viewing cross references to these numbers
- 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
SET OF 4
2 x 99634398009
2 x 99634350901
FRONT Cars with SPORT chassis (Option code: I030/I480)

Fits:
Porsche 997 C2 / C2S / C4 / C4S MKI 2005-08 - Cars with SPORT chassis (Option code: I030/I480)
Porsche 997 C2 / C2S / C4 / C4S MKII 2009-12 - Cars with SPORT chassis (Option code: I030)
Click 'Zoom in' for large parts diagram.
Diagram ref no 8 & 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634398009
The product you are viewing cross references to these numbers
- 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 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
FRONT 997 Cars with SPORT chassis (Option code: I030/I480) 996 with (Option code: IX74 / M030)
Fits:
Porsche 997 C2 / C2S / C4 / C4S MKI 2005-08 - Cars with SPORT chassis (Option code: I030/I480)
Porsche 997 C2 / C2S / C4 / C4S MKII 2009-12 - Cars with SPORT chassis (Option code: I030)
Porsche 996 C2 / C2S / C4 / C4S - Cars with SPORT chassis (Option code: IX74 / M030)
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634398009
The product you are viewing cross references to these numbers
- 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 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
This is for the shock absorber as an additional spring, also known as a bump stop, stopper or helper spring, designed for the front strut assemblies on Porsche 997 models equipped with the Sport chassis (option codes I030 or I480). Front axle suspension assembly for Porsche 996/997 (1998–2012), serving as a rubber stop or bushing integrated into the strut structure.
Fits:
Porsche 997 C2 / C2S / C4 / C4S MKI 2005-08 - Cars with SPORT chassis (Option code: I030/I480)
Porsche 997 C2 / C2S / C4 / C4S MKII 2009-12 - Cars with SPORT chassis (Option code: I030)
Porsche 996 C2 / C2S / C4 / C4S - Cars with SPORT chassis (Option code: IX74 / M030)
This acts as a progressive load-bearing element, cushioning the suspension when the strut nears full compression. It helps prevent harsh bottoming-out, protecting both the strut and chassis from damage during aggressive driving or over bumps.
These components maintain ride quality and handling performance, especially under heavy loading or spirited cornering, keeping the suspension linear and controlled.
Common Issues & Considerations
Wear or Deterioration: Over time, the rubber can compress, crack, or lose elasticity, diminishing its effectiveness. This can lead to harsher suspension impacts at full compression.
Noise or Harsh Feedback: A worn or hardened bump stop can transmit noise or impacts through the cabin, particularly over rough roads or speed bumps.
Sport vs. Standard Suspension: These parts are specific to Sport chassis models. Non-sport setups may not have the same bump stops or use different part numbers, so swapping or replacing must be done accordingly.
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634398009
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 C2 3.6L 09/01-2005
- 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 C4 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
Front.

Fits:
Porsche 996 C2 1998-05
Porsche 997 C2 /C2S MKI 2005-08
Porsche 997 C2 /C2S MKII 2009-10
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005>>
Porsche 987C Cayman 2005>>
Options:
- 3.0 mm
- 6.5 mm
Please select below
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9963435110
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 C2 3.6L 09/01-2005
- 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 C4 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
The shock-absorber compensating plate, also known as spring shim / coil-spring plate for Porsche 996 / 997 / 986 / 987 (OEM part No 996.343.511.00 and 996.343.511.01) is a small metal washer-style plate that sits between the top of the coil spring and the strut top mount/support ring. It’s used to compensate for spring manufacturing tolerances and to ensure the spring seats correctly and the static ride height and geometry are as Porsche intended.
996.343.511.00 – compensating plate (thinner option, commonly ≈ 3.0 mm).
996.343.511.01 – compensating plate (thicker option, commonly ≈ 6.5 mm).

Fits:
- 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 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 2S 3.8L 2005>>
- Porsche 997 MKII Carrera C2 3.6L 2009>>
- Porsche 997 MKII Carrera C4 3.6L 2009>>
- Porsche 997 MKII Carrera C2S 3.8L 2009>>
- 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
Why are important / when to replace
Correct ride height & geometry: Porsche marks springs with tolerance codes; the correct compensating plate thickness is used to achieve the intended static height and suspension geometry. Using the wrong thickness (or missing the plate) can shift ride height by a few millimeters and slightly alter camber/handling.
Proper spring seating: the plate centers and supports the spring top so the spring doesn’t “walk” or sit unevenly on the top mount — missing/damaged plates can allow the spring to sit off-centre and introduce noise or uneven wear.
During any strut/spring/top-mount job: always inspect/replace these plates when you disassemble the strut. They’re inexpensive and commonly replaced as part of a suspension refresh.
Common issues and symptoms
Clunking or popping noises over bumps or in turns if the spring isn’t seating properly (plate missing, crushed, corroded or installed with wrong orientation).
Incorrect ride height / slight handling changes if the wrong thickness is used (3.0 mm vs 6.5 mm can change static height and the intended spring preload/stack). Enthusiast threads explicitly call out these two thicknesses and their effect.
Corrosion / physical damage: over time OE plates can corrode or get deformed during disassembly — they’re cheap and often replaced because removal can damage them.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9963435110
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 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
The OE Genuine Porsche shock absorber cone washer is a factory front suspension mounting washer for selected Porsche Boxster, Cayman, 996 and 997 models. It helps the front shock absorber / strut mounting assembly seat correctly and supports proper suspension rebuilds. Ideal for front shock absorber replacement, top mount service or suspension restoration using Genuine Porsche hardware.
Sold individually
Fits:
Porsche 986 Boxster 1997 - 2004
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 996 C2 / C4 / C4S / Turbo 1998 - 2005
Porsche 997.1 C2 / C2S 2005 - 2008
Porsche 997.1 C4 / C4S 2005 - 2008
Porsche 997.2 C2 / C2S 2009 - 2012
Porsche 997.2 C4 / C4S 2009 - 2012
Diagram Ref No 2
This washer is used within the front shock absorber / front strut mounting assembly on selected Porsche models.
What This Part Does / Functions
• Helps locate and seat the shock absorber mounting components correctly
• Supports the correct assembly of the front strut / shock absorber mount
• Helps distribute load through the shock absorber mounting area
• Works with the top mount, bearing, support ring and related suspension components
• Helps maintain correct suspension geometry and shock absorber positioning
• Replaces a worn, corroded, distorted or missing original washer
• Provides correct OE Porsche shape, profile and fitment
• Supports proper suspension rebuild or front damper replacement.
Why Replace This Part?
The shock absorber cone washer is a small but important suspension mounting component. Over time, it can become corroded, flattened, distorted or damaged, especially during shock absorber or top mount removal. If the washer is missing or incorrectly seated, the shock absorber mounting assembly may not clamp or locate correctly. Replacing it with an OE Genuine Porsche cone washer helps ensure the front strut assembly is rebuilt with the correct factory hardware and fitment.
When to Replace This Part
• When replacing front shock absorbers
• During front strut top mount replacement
• When replacing shock absorber bearings, support rings or bump stops
• If the original washer is corroded, bent, flattened or damaged
• If the washer is missing from the shock absorber assembly
• During front suspension overhaul or restoration
• If front suspension noise is traced to worn or incorrectly assembled mounting hardware
• When rebuilding the suspension with correct Genuine Porsche parts.
Where It Fits on the Car
This cone washer fits in the front shock absorber / strut mounting assembly. It is used around the upper section of the front shock absorber assembly with the related mounting, bearing and support components. Correct order of assembly is important. Always follow Porsche workshop procedures when rebuilding the front suspension.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634351300
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 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
OE Match shock absorber cone washer for Porsche Boxster, Cayman, 996, and 997 models. This replacement suspension washer helps support correct shock absorber mounting and secure assembly during suspension service.
Sold individually, 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 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Porsche 996 C2 / C4 / C4S / Turbo 1998 - 2005
Porsche 997.1 C2 / C2S 2005 - 2008
Porsche 997.1 C4 / C4S 2005 - 2008
Porsche 997.2 C2 / C2S 2009 - 2012
Porsche 997.2 C4 / C4S 2009 - 2012
Diagram Ref No 2
The cone washer helps position and support the shock absorber mounting hardware. It assists with correct load distribution at the mounting point and helps ensure the shock absorber is securely installed within the suspension assembly.
Functions
• Replaces the shock absorber cone washer
• Supports correct shock absorber mounting
• Helps locate and seat suspension mounting hardware
• Assists with correct clamping and load distribution
• Used during shock absorber, strut, or suspension top mount service
• Replaces worn, corroded, distorted, missing, or damaged washers
• OE Match replacement for Porsche suspension repair.
Why Replace This Part?
Shock absorber mounting washers are exposed to road dirt, moisture, corrosion, suspension load, vibration, and repeated service work. A worn, corroded, flattened, distorted, or missing cone washer can affect correct shock absorber seating and may contribute to suspension noise, looseness, or poor mounting security. Replacing the washer during shock absorber service helps ensure the assembly is fitted correctly.
When to Replace This Part
• Shock absorbers or struts are being replaced
• Suspension top mounts or related hardware are being renewed
• The original washer is corroded, worn, distorted, cracked, or missing
• Suspension knocking, movement, or looseness is being investigated
• The shock absorber mounting hardware has been removed
• Preventative replacement is required during suspension overhaul
• The vehicle is undergoing Porsche Boxster, Cayman, 996, or 997 suspension restoration.
Where it fits on the car
This cone washer fits within the shock absorber mounting assembly. Exact position can vary depending on model, axle location, shock absorber type, and suspension layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634351300
The product you are viewing cross references to these numbers
-
Cross member / Wishbone 997.2 Carrera 2009-12 401-000
-
Suspension / Shock absorber strut 997.2 Carrera 2 / Carrera 2S / Carbio / Speedster/ Carrerta GTS 2009-12 402-000
-
Suspension / Shock absorber strut 997.2 Carerra 2009-12 402-001
-
Rear axle / Wheel carrier / Guide / Wheel hub 997.2 Carrera 2009-12 501-000
Porsche Front Shock Absorber Parts | Design911 Suspension Components for Comfort, Control & Handling Precision
Front shock absorber parts are crucial to your Porsche’s suspension system, ensuring smooth ride quality, consistent wheel contact, and stable handling. Working together with coil springs, dampers, and mounting components, these parts absorb road impacts and reduce vibration — keeping your Porsche composed and responsive in all driving conditions. A well-maintained front shock absorber assembly delivers the precise steering feedback, grip, and comfort expected from a high-performance vehicle.
At Design911, we offer a wide selection of front shock absorber parts, including mounts, top bearings, bump stops, dust covers, washers, and hardware kits. Each component is designed for perfect fitment, durability, and performance. Whether for routine servicing, restoration, or suspension upgrades, our range ensures your Porsche’s suspension system remains balanced, refined, and road-ready.
What Do Front Shock Absorber Parts Do?
Front shock absorber parts form a critical link in your suspension assembly, helping the dampers and springs function effectively while maintaining chassis balance.
Core Functions:
• Support the shock absorber assembly and maintain correct positioning.
• Reduce noise, vibration, and harshness (NVH) from road impacts.
• Allow smooth, controlled compression and rebound of the suspension.
• Protect the shock absorber from dust, dirt, and fluid contamination.
• Ensure consistent ride height and suspension performance.
Each part plays a vital role in maintaining Porsche’s signature blend of agility, precision, and comfort.
Why Do Front Shock Absorber Parts Fail or Degrade?
Continuous movement, heat, and exposure to the elements cause front suspension components to wear or deteriorate over time.
Common Causes of Failure Include:
• Perished rubber mounts or bushings reducing shock absorption.
• Corroded bolts or mounting plates affecting alignment.
• Cracked or split dust covers allowing dirt ingress.
• Worn bearings causing creaking or uneven damping.
• Age-related material fatigue reducing effectiveness.
When these parts fail, symptoms can include knocking noises, uneven ride height, poor steering feel, or harsh suspension response — all indicators that replacement is needed to restore performance and comfort.
Why Replace or Upgrade Your Porsche Front Shock Absorber Parts?
Replacing worn components restores your suspension’s performance and ensures precise steering and comfort. Upgrading to reinforced or performance-spec parts improves chassis response and durability, especially for spirited driving or track use.
Key Benefits:
• Restores smooth ride quality and suspension balance.
• Improves steering accuracy and road feedback.
• Reduces vibration, noise, and harshness.
• Constructed from high-quality, corrosion-resistant materials.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Cayenne, Macan, and Panamera
models.
• Ideal for servicing, restorations, or suspension performance upgrades.
Design911’s Porsche front shock absorber parts combine precision engineering and strength — ensuring your suspension performs at its best for both everyday driving and high-performance conditions.
Highlights
• Premium Porsche front shock absorber mounts, bearings, and
kits.
• Designed for precision fitment and damping efficiency.
• Reduces vibration, noise, and suspension wear.
• Engineered for both comfort and performance.
• Compatible with classic and modern Porsche models.
• Perfect for maintenance, restoration, or handling upgrades.