Shock Absorber Parts REAR

Rear shock mount washer, 12,5 x 19,1 x 3
The Porsche Genuine OE Rear Shock Mount Washer is an original factory suspension mounting washer / strut mount washer used within the rear shock absorber mounting assembly on a range of Porsche performance models.
Sold individually, 2 required per vehicle

Fits:
Porsche 997.1 2005 - 2008 All models
Porsche 997.2 2009 - 2012 All models
Porsche 991.1 2012 - 2016 All models
Porsche 991.2 2017 - 2019 All models
Porsche 918 Spyder 2015

The washer sits within the rear shock absorber mounting assembly and helps evenly distribute clamping force between the shock absorber, mounting hardware, and supporting plates.

Its role is essential in maintaining:
•   Correct shock absorber positioning
•   Stable suspension mounting geometry
•   Reduced stress on suspension components
•   Proper load transfer through the rear suspension system

This small component plays an important role in ensuring reliable suspension operation under both normal driving and high-performance conditions.

Functions & Technical Role
•  Load distribution: Spreads mounting force evenly across the suspension assembly
•  Mounting support: Helps stabilise rear shock absorber mounting components
•  Suspension alignment: Maintains correct rear strut positioning
•  Vibration resistance: Reduces stress and movement within the suspension mount
•  OEM precision: Manufactured to Porsche factory specifications for exact fitment and durability

Fitment / Position on Car
•  Fitting position: Rear suspension
•  Location: Rear shock absorber / upper strut mounting assembly
•  System: Rear suspension and shock absorber mounting system

The washer helps maintain correct rear shock absorber mounting alignment and prevents uneven stress within the suspension assembly. Worn or damaged mounting hardware can affect suspension stability and long-term component durability.

When to replace
•  During rear suspension or shock absorber overhaul
•  Damaged, bent, or corroded mounting hardware
•  Suspension mount wear or movement
•  Accident or suspension impact damage
•  When replacing associated top mount components

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WHT008575

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Rear shock mount washer, 12,5 x 19,1 x 3
This OE Match rear shock mount washer is a direct replacement for the original Porsche suspension mounting washer fitted to selected Porsche 997, 991, and 918 Spyder models. It forms part of the rear shock absorber mounting assembly and helps distribute load evenly across the suspension top mount and supporting components.
Sold individually, 2 required per vehicle

Fits:
Porsche 997.1 2005 - 2008 All models
Porsche 997.2 2009 - 2012 All models
Porsche 991.1 2012 - 2016 All models
Porsche 991.2 2017 - 2019 All models
Porsche 918 Spyder 2015

Diagram ref no 10

Installed within the rear suspension strut mounting assembly, the washer sits between the shock absorber mount and associated suspension hardware. It helps spread mounting loads evenly across the shock absorber top mount, reducing stress concentration on suspension components while supporting correct alignment and secure fastening of the rear suspension system

This washer is commonly replaced during rear shock absorber servicing, suspension rebuilds, or top mount replacement work. Over time, mounting hardware can become worn, distorted, or corroded due to repeated suspension load cycles and environmental exposure. Replacing worn suspension washers helps maintain correct mounting integrity and ensures proper operation of the rear suspension assembly.

The washer is also referenced under previous Porsche part number 99902527102

The rear shock mount washer distributes suspension mounting load across the shock absorber top mount assembly, helping maintain secure suspension fastening, correct alignment, and stable suspension operation.

Function
•  Supports rear shock absorber mounting assembly
•  Distributes suspension load evenly across mounting surfaces
•  Helps maintain secure shock absorber fastening
•  Reduces stress on suspension mounting components
•  Supports stable rear suspension operation and alignment

Suspension mounting hardware is subjected to constant load, vibration, and road impact. Over time, washers can become distorted, fatigued, or corroded, potentially affecting suspension mounting integrity and alignment. Replacing worn suspension washers during shock absorber or top mount servicing helps ensure secure assembly and reliable suspension performance.

When to replace
•  During rear shock absorber replacement
•  During suspension top mount servicing
•  Corroded or damaged mounting hardware
•  Suspension overhaul or refurbishment
•  Preventative maintenance during suspension rebuilds

Related reference numbers
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WHT008575

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Powerflex Rear top mount isolator bush is a direct replacement for the OE foam isolator, meaning that you no longer have to buy an expensive complete mount and can just replace the problematic part. It offers increased durability and performance while providing a cost-effective, fit-and-forget solution that's a worthwhile upgrade as part of any rear suspension overhaul.

SET OF TWO

Fits to OE Part Numbers: 99733306100 / 99733306101 / 99733306102 / 99733306103



Fits:
Porsche 997 GT2, GT3, GT3RS
Porsche 997 inc. Turbo

Fits to No. 2 on the diagram.

Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components.

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

PFR57-830

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Powerflex Black series Rear top mount isolator bush is a direct replacement for the OE foam isolator, meaning that you no longer have to buy an expensive complete mount and can just replace the problematic part. It offers increased durability and performance while providing a cost-effective, fit-and-forget solution that's a worthwhile upgrade as part of any rear suspension overhaul.

SET OF TWO

Fits to OE Part Numbers: 99733306100 / 99733306101 / 99733306102 / 99733306103



Fits:
Porsche 997 GT2, GT3, GT3RS
Porsche 997 inc. Turbo

Fits to No. 2 on the diagram.


Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.

Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components


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

PFR57-830BLK

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Shock Absorber Bellow. REAR Axle.



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>>

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Diagram ref no 7

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99333310701

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Shock absorber bellow. REAR Axle.



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>>

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

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99333310701

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Shock absorber bump stop cars with sport shock I475 / I030 Porsche 997



Fits:
Porsche 997.1 C2 / C2S 2005-08 (I475)
Porsche 997.1 C4 / C4S 2005-08 (I475)
Porsche 997.1 Turbo / GT2 2007-09
Porsche 997.2 C2 / C2S / GTS 2009-12 (I030 / I475)
Porsche 997.2 C4 / C4S / Targa / Targa S / 4GTS 2009-12 (I030 / I475)
Porsche 997.2 Turbo / GT2 RS 2010-13
Porsche 997 GT3 / GT3 RS 4.0 2007-11

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Diagram ref no

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99733310501

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Shock absorber additional spring. fits the FRONT cars with sport shock I475 / I030 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 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 8

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99733310501

The product you are viewing cross references to these numbers

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

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99733310501

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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

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99633351102

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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

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99633351103

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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

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9963335110

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