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Hex bolt with internal torx head (Duo) Genuine Porsche part WHT008539
Code: WHT008539
Genuine Porsche part
Hex bolt with internal torx head (Duo)
Additional information:
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
Vehicle Group
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
Price: £7.44
Orderable - 14 - 28 Days
Related products
SUSPENSIONKIT19
Product Information
Price is for EACH SIDE so for both sides you will need to order 2 kits. Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with Standard Chassis (Option code: I029)
Porsche 997 C4 / C4S MKI 2005-08
Porsche 997 C4 / C4S MKII 2008-12
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT19
The product you are viewing cross references to these numbers
Product Information
Shock Absorber Mounting Overhaul Kit REARPrice is for EACH SIDE so for both sides you will need to order 2 kits. Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with Standard Chassis (Option code: I029)
Porsche 997 C4 / C4S MKI 2005-08
Porsche 997 C4 / C4S MKII 2008-12
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT19
99908405002
99633351102
99633351103
99733350400
99902527102
99633310502
99333310701
WHT008558
WHT008575
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Hexagon nut M 12 x 1 (WHT008558)
Unit Price: £13.02
In Stock - 24 Hour Dispatch
1 x Shock Absorber Compensating Plate, Rear. Porsche 996 / 997 1998-13 (99633351102)
Unit Price: £25.18
Orderable - 14 to 28 Days
1 x Shock Absorber Compensating Plate, Rear. Porsche 996 / 997 1998-13 (99633351103)
Unit Price: £25.18
In Stock - 24 Hour Dispatch
1 x Shock absorber ring. Porsche 996 / 997 (99733350400)
Unit Price: £33.75
In Stock - 3- 5 Days Dispatch
1 x Shock absorber additional spring STD suspension. Porsche 996 / 997 MKI / 997 MKII (99633310502)
Unit Price: £58.49
Orderable - 14 to 28 Days
1 x Shock Absorber Bellow. Porsche 993 / 996 / 997 (99333310701)
Unit Price: £25.42
In Stock - 24 Hour Dispatch
1 x Rear shock mount washer. Porsche 997 / 991 / 918 Spyder (WHT008575/1)
Unit Price: £7.50
Due In 30+ Days
Vehicle Group
Vehicle Group
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Price: £188.54
Available: 4 of 7 items (57%)
>> Check Stock
SUSPENSIONKIT20
Product Information
Price is for EACH SIDE so for both sides you will need to order 2 kits. Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with PASM (Option code: I475)
Porsche 997 C4 / C4S MKI 2005-08
Porsche 997 TURBO MKI
Porsche 997 C4 / C4S MKII 2008-12
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT20
The product you are viewing cross references to these numbers
Product Information
Shock Absorber Mounting Overhaul Kit REARPrice is for EACH SIDE so for both sides you will need to order 2 kits. Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with PASM (Option code: I475)
Porsche 997 C4 / C4S MKI 2005-08
Porsche 997 TURBO MKI
Porsche 997 C4 / C4S MKII 2008-12
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT20
99908405002
99633351102
99633351103
99733350400
99902527102
99733310501
99333310701
WHT008558
WHT008575
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Hexagon nut M 12 x 1 (WHT008558)
Unit Price: £13.02
In Stock - 24 Hour Dispatch
1 x Shock Absorber Compensating Plate, Rear. Porsche 996 / 997 1998-13 (99633351102)
Unit Price: £25.18
Orderable - 14 to 28 Days
1 x Shock Absorber Compensating Plate, Rear. Porsche 996 / 997 1998-13 (99633351103)
Unit Price: £25.18
In Stock - 24 Hour Dispatch
1 x Shock absorber ring. Porsche 996 / 997 (99733350400)
Unit Price: £33.75
In Stock - 3- 5 Days Dispatch
1 x Rear shock mount washer. Porsche 997 / 991 / 918 Spyder (WHT008575/1)
Unit Price: £7.50
Due In 30+ Days
1 x Shock absorber bump stop cars with sport shock I475 / I030 Porsche 997 (99733310501)
Unit Price: £83.20
In Stock - 3- 5 Days Dispatch
1 x Shock Absorber Bellow. Porsche 993 / 996 / 997 (99333310701)
Unit Price: £25.42
In Stock - 24 Hour Dispatch
Vehicle Group
Vehicle Group
- 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 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Price: £213.25
Available: 5 of 7 items (71%)
>> Check Stock
WHT008558
Product Information
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WHT008558
The product you are viewing cross references to these numbers
Product Information
Hexagon nut M 12 x 1Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WHT008558
WHT008558
99908405002
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
Price: £13.02
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
WHT008575
Product Information
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
Related, superseded, cross reference or alternative numbers for comparison.
WHT008575
The product you are viewing cross references to these numbers
Product Information
Rear shock mount washer, 12,5 x 19,1 x 3The 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
Related, superseded, cross reference or alternative numbers for comparison.
WHT008575
99902527102
WHT008575
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 918 Spyder 4.6L 2014-15
Price: £11.95
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
SUSPENSIONKIT19X
Product Information
Price is for BOTH SIDES Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with Standard Chassis (Option code: I029)
Porsche 997.1 C4 / C4S 2005 - 2008
Porsche 997.2 C4 / C4S 2008 - 2012
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT19X
The product you are viewing cross references to these numbers
Product Information
Shock Absorber Mounting Overhaul Kit REARPrice is for BOTH SIDES Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with Standard Chassis (Option code: I029)
Porsche 997.1 C4 / C4S 2005 - 2008
Porsche 997.2 C4 / C4S 2008 - 2012
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT19X
99908405002
99633351102
99633351103
99733350400
99902527102
99633310502
99333310701
WHT008558
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
2 x Hexagon nut M 12 x 1 (WHT008558)
Unit Price: £13.02
In Stock - 24 Hour Dispatch
2 x Shock absorber Compensating plate 0.5MM. Porsche 996 / 997 (99633351102/1)
Unit Price: £11.95
In Stock - 24 Hour Dispatch
2 x Shock Absorber Compensating Plate, Rear. Porsche 996 / 997 1998-13 (99633351103)
Unit Price: £25.18
In Stock - 24 Hour Dispatch
2 x Shock absorber ring. Porsche 993 (99733350400/1)
Unit Price: £12.00
Due In 14 Days
1 x Shock absorber bump stops and dust cover. Porsche 996 / 997 MKI / 997 MKII (99633310502/2)
Unit Price: £29.00
In Stock - 24 Hour Dispatch
2 x Rear shock mount washer. Porsche 997 / 991 / 918 Spyder (WHT008575/1)
Unit Price: £7.50
Due In 30+ Days
Vehicle Group
Vehicle Group
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Price: £168.30
Available: 4 of 6 items (66%)
>> Check Stock
SUSPENSIONKIT20X
Product Information
Price is for BOTH SIDES Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with PASM (Option code: I475)
Porsche 997 C4 / C4S MKI 2005-08
Porsche 997 TURBO MKI
Porsche 997 C4 / C4S MKII 2008-12
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT20X
The product you are viewing cross references to these numbers
Product Information
Shock Absorber Mounting Overhaul Kit REARPrice is for BOTH SIDES Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For Cars with PASM (Option code: I475)
Porsche 997 C4 / C4S MKI 2005-08
Porsche 997 TURBO MKI
Porsche 997 C4 / C4S MKII 2008-12
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT20X
99908405002
99633351102
99633351103
99733350400
99902527102
99733310501
99333310701
WHT008558
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
2 x Hexagon nut M 12 x 1 (WHT008558)
Unit Price: £13.02
In Stock - 24 Hour Dispatch
2 x Shock absorber Compensating plate 0.5MM. Porsche 996 / 997 (99633351102/1)
Unit Price: £11.95
In Stock - 24 Hour Dispatch
2 x Shock Absorber Compensating Plate, Rear. Porsche 996 / 997 1998-13 (99633351103)
Unit Price: £25.18
In Stock - 24 Hour Dispatch
2 x Shock absorber ring. Porsche 993 (99733350400/1)
Unit Price: £12.00
Due In 14 Days
2 x Rear shock mount washer. Porsche 997 / 991 / 918 Spyder (WHT008575/1)
Unit Price: £7.50
Due In 30+ Days
1 x Shock absorber bump stops & bellows kit. Porsche 997 (99733310501/2)
Unit Price: £33.00
In Stock - 24 Hour Dispatch
Vehicle Group
Vehicle Group
- 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 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Price: £172.30
Available: 4 of 6 items (66%)
>> Check Stock
SUSPENSIONKIT21X
Product Information
Price is for BOTH SIDES Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For STD cars
Porsche 997 C2 / C2S
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT21X
The product you are viewing cross references to these numbers
Product Information
Shock absorber mounting overhaul kit, REAR.Price is for BOTH SIDES Please also add top mounts if you required them
Including shock absorber Bellow, Bump Stop, Supporting plate, Compensating plate, Washers & Nut.
Fits:
For STD cars
Porsche 997 C2 / C2S
Parts Diagram ref No's 3, 4, 7, 8, 9, 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT21X
99333310701
99633310502
WHT008575
99733350400
99633351102
99633351103
WHT008558
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Shock absorber bump stops & bellows kit. Porsche 997 (99733310501/2)
Unit Price: £33.00
In Stock - 24 Hour Dispatch
2 x Rear shock mount washer. Porsche 997 / 991 / 918 Spyder (WHT008575/1)
Unit Price: £7.50
Due In 30+ Days
2 x Shock absorber ring. Porsche 993 (99733350400/1)
Unit Price: £12.00
Due In 14 Days
2 x Shock absorber Compensating plate 0.5MM. Porsche 996 / 997 (99633351102/1)
Unit Price: £11.95
In Stock - 24 Hour Dispatch
2 x Shock Absorber Compensating Plate, Rear. Porsche 996 / 997 1998-13 (99633351103)
Unit Price: £25.18
In Stock - 24 Hour Dispatch
2 x Hexagon nut M 12 x 1 (WHT008558)
Unit Price: £13.02
In Stock - 24 Hour Dispatch
Vehicle Group
Vehicle Group
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
Price: £172.30
Available: 4 of 6 items (66%)
>> Check Stock
WHT008575/1
Product Information
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
Product Information
Rear shock mount washer, 12,5 x 19,1 x 3This 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
99902527102
WHT008575
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 918 Spyder 4.6L 2014-15
Price: £7.50
Due In 30+ Days
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SUSPENSIONKIT991.2.M030-RR
Product Information
Symptoms Of Wear Or Failure:
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT991.2.M030-RR
The product you are viewing cross references to these numbers
Product Information
Rear Coil Spring Kit With Sports Suspension (M030 / M031).Restore the intended rear ride height, suspension response and chassis balance of your Porsche with this OE Match Rear Coil Spring Kit for Sports Suspension (M030 / M031).
Kit Contents:
x2 Rear Coil Springs (99133353115504/1)
x2 Circlip (99915216300)
x2 Spring Disc (9P1512103A)
x2 Bellow (9P1512137A/1)
x2 Bump Stop (99133310501)
x2 Upper Base (99133350400/1)
x2 Spacer (99133351100/1)
x2 Top Mount Insert (99133369101)
x2 Washer (WHT008575/1)
x2 Nut (WHT008558)
Fits:
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
Designed for compatible Porsche applications equipped with the specified M030 / M031 Sports Suspension, this kit provides replacement components for the rear spring assembly and is suitable for repairing ageing, worn, damaged or corroded suspension components.
The rear coil springs support the vehicle's weight while allowing controlled vertical wheel movement over bumps and changing road surfaces. Working together with the rear shock absorbers and associated suspension components, they help establish ride height, control weight transfer and maintain predictable rear-axle behaviour during acceleration, braking and cornering.
Sports suspension systems depend on springs with the correct characteristics. A weakened, sagging, broken or incorrectly specified spring can alter ride height and suspension geometry, potentially affecting handling balance, traction, tyre wear and stability.
Replacing deteriorated components with this OE Match M030 / M031 Rear Coil Spring Kit helps restore the rear suspension closer to its intended operating condition.
What This Product Does:
- Support the weight carried by the rear suspension.
- Maintain the specified rear ride height.
- Allow controlled suspension movement over uneven surfaces.
- Work together with the rear shock absorbers.
- Maintain the intended M030 / M031 Sports Suspension characteristics.
- Support predictable rear-axle behaviour.
- Help control body movement during cornering.
- Manage weight transfer during acceleration and braking.
- Maintain appropriate rear suspension geometry.
- Support consistent tyre contact with the road.
- Help maintain chassis balance between the front and rear axles.
- Restore worn or damaged rear suspension components.
- Provide an OE Match replacement solution for compatible Porsche applications.
Symptoms Of Wear Or Failure:
- Broken or fractured spring coils.
- Rear of the vehicle sitting lower than normal.
- One rear corner sitting lower than the other.
- Uneven ride height.
- Excessive rear suspension sag.
- Reduced ground clearance.
- Knocking or clunking from the rear suspension.
- Metallic noises over bumps.
- Spring moving or sitting incorrectly in its seat.
- Suspension bottoming out more frequently.
- Excessive body movement.
- Rear of the vehicle feeling unsettled.
- Reduced handling precision.
- Unusual behaviour during acceleration or braking.
- Uneven or accelerated rear tyre wear.
- Visible corrosion on the springs.
- Damaged protective spring coating.
- Cracked or deteriorated spring mounting components.
Why Replacement Matters:
- Coil springs are fundamental load-bearing suspension components.
- They help determine vehicle ride height and maintain the designed relationship between the body, wheels and suspension geometry.
- A severely fractured spring may also become displaced from its intended seating position, potentially causing damage to surrounding components.
- Replacing defective springs helps restore controlled and predictable rear suspension operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT991.2.M030-RR
99133353115504
99915216300
9P1512103A
9P1512137A
99133310501
99133350400
99133351100
99133369101
WHT008575
WHT008558
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
2 x Coil spring REAR. Porsche 991.2 Carrera 2017-19 with Sport Suspension (M030 / M031) (99133353115504/1)
Unit Price: £145.00
In Stock - 24 Hour Dispatch
2 x circlip (99915216300)
Unit Price: £3.29
Orderable
2 x Shock absorber spring disc. Porsche 992.1 Carrera / 992 Turbo (9P1512103A)
Unit Price: £116.42
Orderable - 14 to 28 Days
2 x Shock absorber bellow. Porsche 991 / 992 with Sport suspension (9P1512137A/1)
Unit Price: £26.95
In Stock - 24 Hour Dispatch
2 x helper spring (99133310501)
Unit Price: £77.87
Orderable
2 x Shock absorber base, Upper Rear. Porsche 991.1 / 991.2 (99133350400/1)
Unit Price: £46.00
Due In 14 Days
2 x Rear coil spring spacer. Porsche 991.1 / 991.2 (99133351100/1)
Unit Price: £22.00
Due In 14 Days
2 x Rear shock top mount insert. Porsche 991 (99133369101)
Unit Price: £91.20
In Stock - 3- 5 Days Dispatch
2 x Rear shock mount washer. Porsche 997 / 991 / 918 Spyder (WHT008575/1)
Unit Price: £7.50
Due In 30+ Days
2 x Hexagon nut M 12 x 1 (WHT008558)
Unit Price: £13.02
In Stock - 24 Hour Dispatch
Vehicle Group
Vehicle Group
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
Price: £1,098.50
Due In 30+ Days
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