Control Arm Lock Nut, M12 x 1,5. Porsche 993 / 996 / 997 / 991 / Boxster / Cayman  ❭  99908444909

Control Arm Lock Nut - Arm to Wheel Carrier,  M12 x 1,5
This genuine Porsche locking nut is designed to provide the correct factory fitment at control arm mounting points where a secure M12 x 1.5 nut is required. It secures the control arm to the wheel carrier on select Porsche 911, Boxster, Cayman and Panamera models.
Sold individually, Quantity required depends on the vehicle model.

Fits:
Porsche 993 1995 - 1998  (Front & Rear)
Porsche 996 1998 - 2005  (Front & Rear)
Porsche 996 Turbo 2000 - 2005  (Front & Rear)
Porsche 996 GT3 1999 - 2005 (Rear)
Porsche 997.1 2005 - 2008  (Front & Rear)
Porsche 997.2 2009 - 2012  (Front & Rear)
Porsche 997 Turbo 2007 - 2013  (Front & Rear)
Porsche 997 GT3  (Front & Rear)
Porsche 991.1 2012 - 2016 (Front)
Porsche 991.2 2017 - 2019 (Front)
Porsche 991 Turbo 2014 - 2020 (Front)
Porsche 991 GT3 (Front)
Porsche Boxster 986 1997 - 2004 (Front)
Porsche Boxster 987.1 2005 - 2008  (Front & Rear)
Porsche Boxster 987.2 2009 - 2012  (Front & Rear)
Porsche Boxster 981 2012 - 2016  (Front & Rear)
Porsche Boxster 982 (718) 2017 >> (Front)
Porsche Cayman 987C.1 2005 - 2008  (Front & Rear)
Porsche Cayman 987C.2 2009 - 2012  (Front & Rear)
Porsche Cayman 981C 2012 - 2016  (Front & Rear)
Porsche Cayman 981C GT4 2016 (Front)
Porsche Cayman 982C (718C) 2017 >> (Front)

Diagram ref no 22 (Front)
Diagram ref no 14 (Rear)

This lock nut fits in the suspension assembly, at the control arm to wheel carrier mounting point. Depending on the model, it may be used on front or rear suspension arm connections where Porsche specifies an M12 x 1.5 locking nut.

Functions
•  Secures the control arm to the wheel carrier
•  Provides a factory-correct M12 x 1.5 locking fastening point
•  Helps maintain suspension arm stability and alignment
•  Prevents loosening caused by road vibration and suspension movement
•  Supports correct suspension geometry and wheel control
•  Helps ensure safe and secure mounting of chassis components
•  Provides OE Porsche fitment, thread size and fastening quality.

Control arm lock nuts are exposed to road dirt, moisture, corrosion and high suspension loads. Over time, the nut can corrode, seize, round off or lose its locking ability. Because this fastener secures a critical suspension joint, it is good practice to replace it whenever the control arm is removed or replaced.

Using a Genuine Porsche OE lock nut helps ensure the control arm is correctly secured to the wheel carrier and maintains the factory-standard suspension assembly.

When to replace
•  When replacing a control arm, wishbone or coffin arm
•  When removing or refitting the arm-to-wheel-carrier joint
•  If the original nut is corroded, seized or damaged
•  If the thread is worn or the locking function is compromised
•  During suspension overhaul or chassis repair work
•  After accident repair or wheel carrier replacement
•  When restoring the suspension with correct OE Porsche hardware.

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

99908444909

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