Shock Absorber Parts REAR

Shock absorber additional springs code 99733310501 with shock absorber bellows code 99333310701. fits the FRONT cars with sport shock I475 / I030  

This package includes 2 x additional spring & 2 shock absorbers cover bellows

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 PASM electronic damper control (with sport shock I475 / I030).

Fits:

• ·         Porsche 997 Carrera 2 3.6L 2005>>
• ·         Porsche 997 Carrera 2S 3.8L 2005>>
• ·         Porsche 997 Carrera 4 3.6L 2005>>
• ·         Porsche 997 Carrera 4S 3.8L 2005>>
• ·         Porsche 997 TURBO 2007>>
• ·         Porsche 997 GT3 2007>>
• ·         Porsche 997 GT2 2007>>
• ·         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 997 MKII Carrera C4S 3.8L 2009>>
• ·         Porsche 997 MKII GT3 2010>>
• ·         Porsche 997 MKII Turbo 2009>>
• ·         Porsche 997 MKII GT2 RS 2011>>

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 7 & 8

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733310501

The product you are viewing cross references to these numbers

Shock absorber bump stops and dust cover. REAR with Standard shocks SET OF 4 PARTS

2 x 99633310502 

2 x 99333310701

Cars with Standard chassis
Porsche 996 Carrera 1998-05
Porsche 996 Turbo/ GT2 / GT3 1998-05
Porsche 997 C2 / C2S MKI & MKII 2005-12
Porsche 997 C4 / C4S MKI & MKII 2005-012

Click 'Zoom in' for large parts diagram.
Diagram ref no 7 and 8

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99633310502

The product you are viewing cross references to these numbers

Shock absorber Compensating plate 0.5MM.
REAR



Fits:
Porsche 996 1998-05
Porsche 996 Turbo 2001-05
Porsche 997 MKI 2005-08
Porsche 997 Turbo 2007-09
porsche 997 GT3 2007>>
Porsche 997 MKII 2009>>


Click 'Zoom in' for large parts diagram.
Diagram ref no 3

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99633351102

The product you are viewing cross references to these numbers

Shock Absorber Compensating Plate, Rear 4.0MM.
Fits Left Or Right.

Fits:
Porsche 996 1998>>2005
Porsche 996 Turbo 2001>>2005
Porsche 997 Carrera MKI 2005>>2008
Porsche 997 Carrera MKII 2009>>2012
Porsche 997 Turbo MKI 2007>>2009

Porsche 997 Turbo MKII 2010>>2013
Porsche 997 GT3 MKI / MKII 2007>>2011

Diagram Ref No 3

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99633351103

The product you are viewing cross references to these numbers

Shock Absorber Compensating Plate, Rear.
Fits Left Or Right.

Fits:
Porsche 996 1998>>2005
Porsche 996 Turbo 2001>>2005
Porsche 997 Carrera MKI 2005>>2008
Porsche 997 Carrera MKII 2009>>2012
Porsche 997 Turbo MKI 2007>>2009

Porsche 997 Turbo MKII 2010>>2013
Porsche 997 GT3 MKI / MKII 2007>>2011

Options:
- 0.5 mm
- 4.0 mm
Please Select Below

Diagram Ref No 3

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9963335110

The product you are viewing cross references to these numbers

Shock absorber Concave washer, Rear axle.



Fits:
For cars with sport suspension (option code:030)
Porsche 997.1 C2 / C2S 2005-08
Porsche 997.1 C4 / C4S 2005-08
Porsche 997.2 C2 / C2S / GTS 2009-12
Porsche 997.2 C4 / C4S 2009-12

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733352300

The product you are viewing cross references to these numbers

Shock absorber concave washer. Lower.



Fits:
Porsche 997.1 C2 / C2S 2005-08 (I029 / I475)
Porsche 997.1 C4 / C4S 2005-08 (I029 / I475)
Porsche 997.1 Turbo 2007-09
Porsche 997.2 C2 / C2S 2009-12 (I475)
Porsche 997.2 C4 / C4S 2009-12
Porsche 991.1 Carrera 2012-16 (I029 / I352 / I475 / I477)
Porsche 991.2 Carrera 2017-18 (I352 / I475 / I477)

***
(I029) For cars with Standard chassis
(I475) For cars with PASM Electronic damper control
(I352) For cars with Electronic damper control for PASM and PDCC
(I477) For cars with PASM w/o lowering


Click 'Zoom in' for large parts diagram.
Diagram ref no 12

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733351300

The product you are viewing cross references to these numbers

Shock absorber concave washer. Lower.



Fits:
Porsche 997.1 C2 / C2S 2005-08 (I029 / I475)
Porsche 997.1 C4 / C4S 2005-08 (I029 / I475)
Porsche 997.1 Turbo 2007-09
Porsche 997.2 C2 / C2S 2009-12 (I475)
Porsche 997.2 C4 / C4S 2009-12
Porsche 991.1 Carrera 2012-16 (I029 / I352 / I475 / I477)
Porsche 991.2 Carrera 2017-18 (I352 / I475 / I477)

***
(I029) For cars with Standard chassis
(I475) For cars with PASM Electronic damper control
(I352) For cars with Electronic damper control for PASM and PDCC
(I477) For cars with PASM w/o lowering


Click 'Zoom in' for large parts diagram.
Diagram ref no 12

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733351300

The product you are viewing cross references to these numbers

Rear Shock absorber ring.  Price is each (2pcs required per car)

Fits:
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 996 Turbo 2001-05
Porsche 997 MKI C2 / C4 / C2S / C4S 2005-08
Porsche 997 Turbo / GT2
Porsche 997 GT3

Diagram ref no 4

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733350400

The product you are viewing cross references to these numbers

Shock absorber ring
Rear



Fits:
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 996 Turbo 2001-05
Porsche 997 MKI C2 / C4 / C2S / C4S 2005-08
Porsche 997 Turbo / GT2
Porsche 997 GT3

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733350400

The product you are viewing cross references to these numbers

Shock Absorber Supporting Mount. REAR



Fits:
Porsche 997 MKI C2 / C2S / C4 / C4S CABRIO with PASM (I475)

Porsche 997 MKII C2 / C2S / C4 CABRIO with STD suspension (I029)
Porsche 997 MKII C4 / C4S CABRIO with PASM (I475)
Porsche 997 MKII GTS CABRIO with PASM (I475) / (I019)
Porsche 997 MKII SPEEDSTER with PASM (I475) / (I503)

Click 'Zoom in' for large parts diagram
Diagram ref no 2

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733306102

The product you are viewing cross references to these numbers

Shock Absorber Supporting Top Mount, REAR.

Restore secure shock absorber mounting, controlled suspension movement and dependable rear suspension performance with this OE Match Rear Shock Absorber Supporting Top Mount. Designed for compatible Porsche applications, the top mount provides the critical upper connection between the rear shock absorber assembly and the vehicle body or chassis.

Fits:
Porsche 997 MKI C2 / C2S / C4 / C4S CABRIO with PASM (I475)
Porsche 997 MKII C2 / C2S / C4 CABRIO with STD suspension (I029)
Porsche 997 MKII C4 / C4S CABRIO with PASM (I475)
Porsche 997 MKII GTS CABRIO with PASM (I475) / (I019)
Porsche 997 MKII SPEEDSTER with PASM (I475) / (I503)

Diagram Ref No 2

The rear shock absorber controls suspension movement by damping the compression and rebound generated as the vehicle travels over changing road surfaces. The supporting top mount holds the upper section of the shock absorber securely while helping manage the forces and vibrations transmitted through the suspension.

Rear top mounts are subjected to continuous loading from road impacts, cornering, acceleration and normal suspension movement. Over time, rubber or other isolation materials can deteriorate, while mounting surfaces and associated components can develop excessive play or damage.

This OE Match Rear Shock Absorber Supporting Top Mount provides a high-quality replacement for a worn, damaged or deteriorated original mount, helping restore secure suspension location and controlled rear-end behaviour.

What This Product Does:

• Secures the upper section of the rear shock absorber to the vehicle.
• Provides a stable mounting point for the rear suspension damper.
• Transfers suspension loads between the shock absorber and chassis.
• Helps maintain correct positioning of the shock absorber.
• Supports controlled compression and rebound of the rear suspension.
• Helps isolate some suspension vibration and harshness from the vehicle body.
• Reduces unwanted movement at the upper shock mounting point.
• Helps maintain consistent rear suspension behaviour.
• Works with the shock absorber and associated suspension components.
• Replaces a worn, cracked, loose or damaged top mount.
• Provides an OE-style replacement for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Knocking or clunking from the rear suspension.
• Rattling when driving over rough or uneven surfaces.
• Noise when travelling over bumps or potholes.
• Excessive movement at the upper shock absorber mounting point.
• Rear suspension that feels loose or unsettled.
• Increased vibration transmitted into the body.
• Reduced suspension refinement.
• Visible cracking or deterioration of rubber components.
• Separation of rubber from the surrounding mount.
• Damaged or distorted mounting surfaces.
• Corrosion around the mount or associated hardware.
• Shock absorber movement that is not properly controlled at its upper attachment.
• Wear discovered while replacing rear shock absorbers.  

Why Replacement Matters:

• The shock absorber top mount is responsible for maintaining a secure connection between the damper and vehicle structure. If the mount develops excessive play or deteriorates, the shock absorber may move at its upper mounting point rather than transferring suspension forces as intended.
• This can result in knocking or rattling noises and may reduce the precision of the rear suspension. On a performance vehicle, unwanted movement within a suspension mounting point can also affect the consistency of the chassis response during cornering and rapid changes of direction.
• A deteriorated mount may transmit increased vibration and harshness into the body. If rubber isolation material has cracked or separated, the mount can lose its ability to cushion the connection between the suspension and chassis.
• Continued operation with a badly worn mount can also place additional stress on the shock absorber, mounting hardware and surrounding attachment points.
• Replacing a worn component with this OE Match Rear Shock Absorber Supporting Top Mount helps restore secure damper location, reduce unwanted suspension movement and support predictable rear suspension performance.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733306102

The product you are viewing cross references to these numbers

Shock Absorber Supporting Mount. REAR



Fits:
For Cars with Standard Chassis (I029)

Porsche 997 C2 / C2S / C4 MKI 2005-08 COUPE / TARGA

Porsche 997 C2 MKII 2009-12 COUPE
Porsche 997 C4 MKII 2009-12 COUPE / TARGA

Click 'Zoom in' for large parts diagram
Diagram ref no 2

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733306100

The product you are viewing cross references to these numbers

Shock Absorber Supporting Top Mount, REAR.
Restore secure damper mounting and precise rear suspension operation with this OE Match Rear Shock Absorber Supporting Top Mount. Designed for compatible Porsche applications, this mount provides the upper connection between the rear shock absorber assembly and the vehicle's body or chassis.  

Fits:
For Cars with Standard Chassis (I029)

Porsche 997 C2 / C2S / C4 MKI 2005-08 COUPE / TARGA
Porsche 997 C2 MKII 2009-12 COUPE
Porsche 997 C4 MKII 2009-12 COUPE / TARGA

Diagram Ref No 2

The rear shock absorber controls suspension compression and rebound as the vehicle travels over changing road surfaces. For the damper to work effectively, it must remain securely located at its mounting points. The supporting top mount transfers suspension loads into the vehicle structure while helping isolate vibration and unwanted harshness.

Constant suspension movement, road impacts, heat, moisture and age can cause the original mount and its isolation material to deteriorate. Once excessive play develops, the shock absorber may move at its upper attachment point, potentially causing knocking noises and reducing suspension precision.

This OE Match Rear Shock Absorber Supporting Top Mount provides a high-quality replacement for a worn, cracked, loose or damaged original component.

What This Product Does:

• Secures the upper section of the rear shock absorber to the vehicle.
• Maintains correct positioning of the damper during suspension movement.
• Transfers suspension forces between the shock absorber and chassis.
• Supports controlled suspension compression and rebound.
• Helps isolate vibration and harshness from the vehicle body.
• Reduces unwanted movement at the upper damper mounting point.
• Helps maintain consistent rear suspension behaviour.
• Supports stable and predictable handling.
• Works with the rear damper and associated suspension components.
• Replaces a worn, deteriorated or damaged original mount.
• Provides an OE-style replacement for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Knocking or clunking from the rear suspension.
• Rattling over rough or uneven roads.
• Noise when travelling over bumps or potholes.
• Excessive movement at the upper shock absorber mounting point.
• Increased vibration transmitted through the vehicle body.
• Rear suspension that feels loose or unsettled.
• Reduced suspension refinement.
• Visible cracks in the mount's rubber or isolation material.
• Rubber separating from the surrounding mount structure.
• Distortion or physical damage to the mount.
• Corrosion around the mount or mounting hardware.
• Loose or damaged mounting fasteners.
• Wear discovered while servicing or replacing the rear shock absorbers.  

Why Replacement Matters:

• The shock absorber depends on a solid and correctly located mounting point to control suspension movement effectively. When the top mount becomes worn, some suspension movement can be absorbed as unwanted movement within the mounting point rather than being properly controlled by the damper.
• This can produce knocking or rattling noises and may make the rear suspension feel less precise. On a performance-focused Porsche, unwanted movement in suspension mounting components can also reduce the consistency of the chassis response during cornering, braking and rapid changes of direction.
• Deteriorated isolation material can allow additional vibration and harshness to pass into the vehicle body. Severe deterioration may also place unnecessary loads on the shock absorber, mounting hardware and surrounding chassis structure.
• A damaged top mount should not be ignored simply because the shock absorber itself remains functional. Both components must be securely connected for the suspension to operate as intended.
• Replacing a worn component with this OE Match Rear Shock Absorber Supporting Top Mount helps restore secure damper location, reduce unwanted movement and maintain predictable rear suspension performance.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733306100

The product you are viewing cross references to these numbers

Shock Absorber Supporting Mount. REAR Axle



Fits:
For Cars with Sport Chassis (I030) or PASM (I475)

Porsche 997 MKI C2 / C2S / C4 / C4S 2005-08 COUPE / TARGA
Porsche 997 TURBO MKI 2005-08
Porsche 997 GT3 MKI 2007-2008

Porsche 997 MKII C2 / C2S / C4 /C4S 2009-2012 COUPE / TARGA
Porsche 997 MKII GTS (I011) / (I019)
Porsche 997 MKII 911 SPORT CLASSIC
(I756)
Porsche 997 TURBO MKII 2010-2013


Click 'Zoom in' for large parts diagram
Diagram ref no 2

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733306101

The product you are viewing cross references to these numbers

Shock Absorber Supporting Mount, REAR Axle.

Restore secure rear shock absorber mounting and controlled suspension performance with this OE Match Shock Absorber Supporting Mount for the Rear Axle. Designed for compatible Porsche applications, this mount forms an important connection between the rear shock absorber assembly and the vehicle's chassis or body structure.

Fits:
For Cars with Sport Chassis (I030) or PASM (I475)

Porsche 997 MKI C2 / C2S / C4 / C4S 2005-08 COUPE / TARGA
Porsche 997 TURBO MKI 2005-08
Porsche 997 GT3 MKI 2007-2008

Porsche 997 MKII C2 / C2S / C4 /C4S 2009-2012 COUPE / TARGA
Porsche 997 MKII GTS (I011) / (I019)
Porsche 997 MKII 911 SPORT CLASSIC
(I756)
Porsche 997 TURBO MKII 2010-2013

Diagram Ref No 2

The shock absorber is responsible for controlling compression and rebound as the suspension moves over bumps, dips and changing road surfaces. Its supporting mount keeps the damper correctly located while transferring suspension loads into the vehicle structure and helping isolate unwanted vibration.

Rear shock mounts experience constant loading during driving. Road impacts, cornering forces, vibration, temperature changes and general ageing can eventually cause the mount or its isolation material to deteriorate. Excessive wear may allow unwanted shock absorber movement, resulting in knocking noises and reduced suspension refinement.

This OE Match Rear Axle Shock Absorber Supporting Mount provides a high-quality replacement for a worn, cracked, loose or damaged original component.

What This Product Does:

• Secures the rear shock absorber to the vehicle structure.
• Maintains correct positioning of the shock absorber.
• Transfers suspension loads between the damper and chassis.
• Supports controlled compression and rebound movement.
• Helps isolate suspension vibration and harshness.
• Reduces unwanted movement at the shock absorber mounting point.
• Helps maintain consistent rear suspension behaviour.
• Supports predictable handling and chassis response.
• Works with the rear shock absorber and associated suspension components.
• Replaces a worn, deteriorated, loose or damaged mount.
• Provides an OE-style replacement for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Knocking or clunking from the rear suspension.
• Rattling when driving over rough roads.
• Noise when travelling over bumps or potholes.
• Excessive movement at the shock absorber mounting point.
• Increased vibration transmitted into the cabin or body.
• Rear suspension that feels less controlled or settled.
• Abnormal movement of the shock absorber.
• Cracked or deteriorated rubber within the mount.
• Rubber separating from the surrounding mount structure.
• Visible distortion or physical damage.
• Corrosion affecting the mount or associated hardware.
• Loose mounting fasteners.
• Deterioration discovered while servicing or replacing the rear dampers.  

Why Replacement Matters:

• The shock absorber can only control suspension movement effectively when it is securely attached to the vehicle. A worn supporting mount may allow the damper to move at its mounting point instead of transferring suspension forces directly into the chassis as intended.
• This unwanted movement can produce knocking or rattling noises and reduce the precision of the suspension response. On a performance-oriented Porsche, even relatively small amounts of unwanted suspension movement can affect how consistent and composed the rear of the vehicle feels during cornering and directional changes.
• The mount also contributes to isolating vibration between the suspension and vehicle structure. As its rubber or isolation material deteriorates, additional vibration and harshness may be transmitted into the body.
• Continued use with a severely worn or damaged mount can place unnecessary loads on the shock absorber, mounting hardware and surrounding chassis attachment points.
• Replacing a deteriorated component with this OE Match Rear Axle Shock Absorber Supporting Mount helps restore secure damper location, reduce unwanted suspension movement and maintain controlled rear suspension behaviour.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99733306101

The product you are viewing cross references to these numbers