Shock Absorber Parts FRONT

Shock Absorber Additional Spring.
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)


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Diagram ref no 9

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99634398009

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Shock Absorber Additional Spring.
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)

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Diagram ref no 8 & 9

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99634398009

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Shock absorber additional spring. fits the FRONT Cars with SPORT chassis (Option code: I030/I480)  one additional spring is required for each shock absorber, the price is each. 
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)

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. 

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Diagram ref no 9

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99634398009

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Shock absorber additional spring. FRONT



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

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Diagram ref no 9

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99634330102

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Shock Absorber Angular-Contact Bearing.
FRONT



Fits:
Porsche 996 C4 / C4S 1998-05
Porsche 996 Turbo
Porsche 997 C4 / C4S 2007>> (MKI and MKII)
Porsche 997 Turbo 2007>> (MKI and MKII)

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Diagram ref no 11

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99634350100

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Shock absorber angular-contact bearing. FRONT.



Fits:
Porsche 996 C4 / C4S 1998-05
Porsche 996 Turbo
Porsche 997 C4 / C4S 2007>> (MKI and MKII)
Porsche 997 Turbo 2007>> (MKI and MKII)

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Diagram ref no 11

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99634350100

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Shock Absorber Compensating Plate.
Front.



Fits:
Porsche 996 C4 / C4S / TURBO 1999-05
Porsche 997 C4 / C4S MKI 2007-08
Porsche 997 C4 / C4S MKII 2009-10
Porsche 997 Turbo MKI & MKII 2007>>

Diagram ref no 9

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9963435250

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Shock absorber compensating plate. 
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

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9963435110

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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

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9963435110

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Shock absorber compensating plate.
Front.



Fits:
Porsche 996 C4 / C4S / TURBO 1999-05
Porsche 997 C4 / C4S MKI 2007-08
Porsche 997 C4 / C4S MKII 2009-10
Porsche 997 Turbo MKI & MKII 2007>>

Diagram ref no 9

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9963435250

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Shock Absorber Cone Washer
FRONT

Fits:
Porsche 986 Boxster 1997>>2004
Porsche 987 Boxster MKI & MKII 2005>>2012
Porsche 987C Cayman MKI & MKII 2005>>2012
Porsche 996 C2 / C4 / C4S / Turbo 1998>>2005
Porsche 997 C2 / C2S MKI & MKII 2005>>2012
Porsche 997 C4 / C4S MKI & MKII 2005>>2012

Diagram Ref No 2

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99634351300

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Shock Absorber Groove Ball Bearing. FRONT

Fits:
Porsche 996 1998-05 C2 / C2S
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>>

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Diagram ref no 11

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99634351505

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Shock absorber groove ball bearing, Front

Fits:
Porsche 996 1998-05 C2 / C2S
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>>

Diagram ref no 11

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Shock absorber hexagon nut, M 14 x 1.5
FRONT



Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2005>>
Porsche 996 1998-05
Porsche 997 MKI 2005-08
Porsche 997 MKII 2009>>

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Diagram ref no 10

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Shock Absorber Sealing Cap. FRONT



Fits:
Porsche 964 Carrera RS 1989-94
Porsche 993 Carrera RS 1994-98
Porsche 996 GT2 2001-05
Porsche 997 GT2 2007-09
Porsche 997 GT2-RS 2010>>
Porsche 996 GT3 1999-05
Porsche 997 GT3 2007-11
Porsche 991 GT2
Porsche 991 GT3 2014 - 2021

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Diagram ref no 17

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96434318680

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Shock absorber stop plate. FRONT axle


Fits:
Porsche 987 Boxster 2005-08 LOWER stop plate ( for cars with PASM)
Porsche 987 Boxster 2009-12 LOWER stop plate ( for cars with PASM)
Porsche 987C Cayman 2005-08 UPPER stop plate
Porsche 987C Cayman 2009-13 LOWER stop plate ( for cars with PASM)
Porsche 997.1 C2 / C2S 2005-08 UPPER stop plate (for cars with PASM)
Porsche 997.1 C4 / C4S (for cars with PASM)
Porsche 997.1 C2 / C2S 2005-08 UPPER stop plate (for cars with standard chassis / for cars with PASM)
Porsche 997 Turbo 2007-09 UPPER stop plate
Porsche 997 Turbo 2010-13 UPPER stop plate

Price is for each.

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Diagram ref no 6

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