Hexagon nut for Rear control arm. Porsche 981 Boxster / 981C Cayman

Rear control arm hexagon head bolt, M 14 X 100.
Designed for the rear axle control arm on Porsche 996 and 997, it provides exact factory fit, strength, and corrosion resistance.
Sold each.

Fits:
Porsche 996 1998 - 2005 
Porsche 997.1 2005 - 2008 
Porsche 997.2 2009 - 2012

Diagram ref no 18

Thread size / spec: M14 × 1.5 × 100 mm
 Supersession: Part 90037805109 is superseded by 90037805101

This bolt secures the rear suspension control arm to the wheel carrier or subframe, providing the clamping force needed to maintain accurate suspension alignment and minimize movement under load.

Over years of service, high torque loads, vibration, and exposure to road conditions can weaken or corrode suspension bolts. A compromised bolt may lead to improper alignment, handling instability, or noise under braking and cornering.

When to replaces:
• During control arm replacement, alignment service, or rear suspension rebuilds
• If original bolts show corrosion, stretching, or thread wear
• As part of preventive maintenance when reassembling load-bearing suspension joints

Replacing with Genuine Porsche hardware ensures structural integrity, precise fit, and lasting performance.

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Related, superseded, cross reference or alternative numbers for comparison.

90037805101

The product you are viewing cross references to these numbers

Rear control arm hexagon head bolt, M 14 X 100.
Built to factory specs for the rear axle control arms on 996 and 997 models, they deliver the fit and strength your high-performance suspension deserves.
Sold each.

Fits:
Porsche 996 1998 - 2005 
Porsche 997.1 2005 - 2008 
Porsche 997.2 2009 - 2012

Diagram ref no 18

Thread size / spec: M14 × 1.5 × 100 mm
Supersession: 90037805109, 90037805101

Since the control-arm mounting bolt bears major structural loads and undergoes vibration and torque stress, it can become worn, stretched, corroded or fatigued over time. This reduces its ability to maintain correct alignment and clamping force - potentially resulting in handling issues or component wear. Replacement is especially important when performing rear suspension service, control arm replacement, or alignment work. Installing the correct bolt restores reliable mounting integrity and ensures the rear axle geometry remains stable under load.

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Related, superseded, cross reference or alternative numbers for comparison.

90037805101

The product you are viewing cross references to these numbers