Hexagon nut for front shock absorber. Porsche 965 Turbo 3.6L  ›  9990844400K

Shock absorber concave washer
This Porsche Genuine OE Shock Absorber Concave Washer 9P1412103 is a small but essential suspension mounting component used on selected Porsche 991.2 and 992 models with advanced suspension systems. It ensures proper load distribution and alignment within the shock absorber assembly, helping maintain factory suspension performance, ride quality, and durability.
Sold individually, 2 required -  fits left or right suspension strut

Fits:
 * cars with Front axle lift function (Option code: 474)
Porsche 991.2 Carrera 2017 - 2019
Porsche 991.2 Turbo 2017 - 2020

 * with Controlled suspension system (Option code: 2UH)
Porsche 992.1 Carrera 2020 - 2024  
Porsche 992 DAKAR (PR:E7S) 2022 - 2024
Porsche 992.1 Turbo 2020 - 2025 

 * with Controlled suspension system (Option code: 2UH)
Porsche 992.2 Carrera 2024>>   
Porsche 992.2 Turbo S 2026>>  

Diagram ref no 10

The concave washer sits within the shock absorber mounting assembly and helps evenly distribute clamping force across the suspension components. Its specially formed curved profile supports the correct positioning of the shock absorber mount, helping maintain suspension geometry and reducing stress on mounting surfaces during suspension movement.

Functions & Technical Role
•  Load distribution: Spreads suspension forces evenly across mounting points
•  Mounting support: Assists correct positioning of the shock absorber assembly
•  Suspension stability: Helps maintain proper suspension alignment under load
•  Vibration control: Reduces stress and movement within the mounting assembly
•  OEM precision: Manufactured to Porsche specifications for exact fitment and durability

Fitment / Position on car
•  Fitting position: Front axle suspension
•  Location: Shock absorber / strut mounting assembly
•  System: Front suspension and damping system

The concave washer supports correct suspension mounting geometry and helps prevent uneven stress on suspension components. Proper load distribution is essential for maintaining ride quality, handling precision, and long-term durability.

When to Replace
•  During shock absorber or suspension overhaul
•  Damaged, bent, or corroded mounting hardware
•  Suspension noise or movement from the strut assembly
•  Following accident or suspension impact damage
•  When replacing associated suspension mounting components

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Related, superseded, cross reference or alternative numbers for comparison.

9P1412103

The product you are viewing cross references to these numbers

Shock absorber upper strut mount. Front.

Fits:
Porsche 991.1 C2 / C2S / C4 / C4S 2012-16
Porsche 991.2 C2 / C2S / C4 / C4S 017>>
Porsche 991 Turbo 2014>>
Porsche 981 Boxster 2012-16
Porsche 982 (718) Boxster 2017>>
Porsche 981C Cayman 2014-16
Porsche 982C Cayman 2017>>

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

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

99134301502

The product you are viewing cross references to these numbers

Front shock absorber bump stop.
The Genuine OE Porsche front shock absorber bump stop, part number 99134330103, is an original Porsche suspension component designed to protect the front shock absorber assembly from excessive compression under heavy suspension load. Installed on the front suspension strut, this high-quality polyurethane/rubber stop acts as a secondary cushioning element, helping to prevent metal-to-metal contact during aggressive driving, hard braking, uneven road surfaces, or full suspension travel.
Sold individually, 2 required -  fits left or right suspension strut

Fits:
Porsche 981 Boxster 2012 - 2016 cars with PASM
Porsche 981C Cayman 2014 - 2016 cars with PASM

Porsche 982 Boxster 2017>> cars with PASM
Porsche 982C Cayman 2017>> cars with PASM

Porsche 991.1 Carrera / Turbo 2012 - 2016 cars with PASM (excluding standard and sport type chassis)
Porsche 991.2 Carrera / Turbo 2017 - 2019 cars with PASM (excluding standard and sport type chassis)

Diagram ref no 6

This component is essential for maintaining ride quality, suspension stability, and correct shock absorber operation. Over time, bump stops can deteriorate due to heat cycles, age, moisture, and repeated suspension compression, leading to cracking, collapse, or reduced cushioning performance. Replacing worn bump stops helps restore proper suspension protection and ensures the shock absorber can operate correctly throughout its full range of movement.

Functions & Technical Role
•  Protects the front shock absorber during full suspension compression
•  Prevents harsh bottoming-out impacts
•  Helps maintain correct suspension geometry under load
•  Reduces shock absorber and strut damage caused by excessive travel
•  Assists with vibration damping and ride refinement
•  Supports optimal PASM suspension performance
•  OE-quality material construction for long-term durability

Fitment / Position on car
•   Front suspension
•   Fits left or right side
•   Mounted on the front shock absorber/strut assembly

The front bump stop is a critical protective component within the Porsche suspension system. During heavy cornering, sudden impacts, aggressive driving, or rough road conditions, the suspension can compress rapidly. Without a properly functioning bump stop, excessive suspension travel can damage the shock absorber, strut mount, spring assembly, and other suspension components.

A deteriorated or collapsed bump stop may also lead to harsh suspension noises, reduced ride comfort, poor damping control, and premature shock absorber wear. Replacing worn bump stops with Genuine Porsche components helps maintain factory suspension performance, protects expensive suspension hardware, and preserves the precise handling characteristics Porsche vehicles are known for.

When to replace. Replace the front shock absorber bump stop if you notice:
•  Cracked, split, or crumbling rubber material
•  Suspension knocking or bottoming-out noises
•  Excessive harshness over bumps
•  Oil leaks or damage around the shock absorber
•  Suspension overhaul or shock absorber replacement
•  Visible compression damage or deterioration
•  Reduced suspension damping performance
•  High mileage or ageing suspension components

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

99134330103

The product you are viewing cross references to these numbers

Front shock absorber bump stop.

Fits:
For cars with standard chassis
Porsche 981 Boxster 2012-16
Porsche 982 Boxster 2017>>
Porsche 981C Cayman 2014-16
Porsche 982C Cayman 2017>>
Porsche 991.1 Carrera 2012-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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

99134330104

The product you are viewing cross references to these numbers