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- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
This OE Match rear shock absorber supporting top mount is a direct replacement for the original Porsche component fitted to 997-generation 911 models equipped with standard suspension/chassis option I029. Installed at the upper mounting point of the rear suspension strut assembly, it secures the shock absorber to the vehicle body while providing controlled flexibility and vibration damping. This is suitable for both left and right rear applications and is commonly replaced during rear shock absorber servicing or suspension overhaul work.
Typically 2 required per vehicle, sold individually.
Fits:
For Cars with Standard Chassis (I029)
Porsche 997 C2 / C4 MKI 2005 - 2008 CABRIO
Diagram ref no 2
The rear top mount secures the upper section of the shock absorber assembly to the chassis while cushioning suspension movement. It helps absorb vibration and impacts from the road, contributing to ride comfort, stability, and proper suspension performance.
Function
• Secures rear shock absorber to vehicle chassis
• Absorbs vibration and road impacts
• Maintains proper suspension alignment and geometry
• Reduces suspension noise and harshness
• Supports smooth and controlled suspension movement
Over time, the rubber isolator inside the top mount can deteriorate due to age, suspension load, and road conditions. Worn mounts may cause knocking noises, excessive suspension movement, vibration, or reduced handling precision. Replacing worn top mounts restores suspension stability, improves ride comfort, and helps maintain proper shock absorber performance.
When to replace
• Knocking or clunking noises from rear suspension
• Excessive vibration or harsh ride quality
• Visible cracking or deterioration of rubber mount
• Uneven suspension movement or instability
• During rear shock absorber replacement or suspension overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733306103
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 MK1 GT3 / GT3 RS 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
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
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- 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 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Fits:
Porsche 993 C2 / C4 / C2S / C4S 1994-98
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 996 Turbo 2001-05
Porsche 997 MKI C2/C2S 2005-08
Porsche 997 Turbo / GT3 2007>>
Porsche 997 MKII 2009>>
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99333310701
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 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 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.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733310501
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 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- 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 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
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