MSPORT SCREW NUT M6 Genuine Porsche part WHT008573

Hexagon nut M 12 x 1

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WHT008558

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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

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Related, superseded, cross reference or alternative numbers for comparison.

WHT008575

The product you are viewing cross references to these numbers