Suspension & Axle

Control Arm Eccentric screw M 12 x 105. Rear Axle.
This is an eccentric adjustment screw used in the suspension system of Porsche 986 Boxster, 987 Boxster, and 987 Cayman models. This precision-engineered  replacement bolt provides the correct geometry and adjustment range for rear or front control arm alignment, allowing proper camber and toe settings.
Sold each.

Fits:
Porsche 986 Boxster 1997-04 F 98XS6 01536>>
Porsche 987 Boxster 2005 - 2008
Porsche 987 Cayman 2005 - 2008

Diagram ref no 12

• Function:  This bolt features an eccentric cam design that enables fine adjustment of suspension geometry. It’s critical for setting camber and toe angles, ensuring your Porsche tracks straight and maintains optimal tire contact for cornering grip and stability.

•  Why Replacement Matters: Over time, eccentric bolts can seize, corrode, or deform due to constant exposure to road conditions and torque load. When this happens, alignment accuracy suffers, and adjustment becomes difficult or impossible.

•  When to replaces: During suspension servicing or alignment work,  When replacing control arms or bushings, If the original bolt is frozen, bent, or corroded

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99633121705

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Control arm FRONT. Porsche 987 / Cayman / 997




Porsche 987 Boxster 2006>>
Porsche 987C Cayman 2005>>
Porsche 997 2005>>

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Diagram re No 13.

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99134105306

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Control Arm FRONT.




Porsche 987 Boxster 2006>>
Porsche 987C Cayman 2005>>
Porsche 997 2005>>

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Diagram re No 13.

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99134105306

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Control arm FRONT. Porsche 987 / Cayman / 997




Porsche 987 Boxster 2006>>
Porsche 987C Cayman 2005>>
Porsche 997 2005>>

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Diagram re No 13.

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99134105306

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Control arm FRONT.




Porsche 987 Boxster 2006>>
Porsche 987C Cayman 2005>>
Porsche 997 2005>>

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Diagram re No 13.

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99134105306

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Control Arm Lock Nut M12 x 1.5 – Arm to Wheel Carrier
This OE Match control arm lock nut is an M12 x 1.5 securing nut used on the suspension assembly of various Porsche models. It is designed for the control arm-to-wheel carrier connection, providing an OE-style fit and secure fastening performance.
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)

The lock nut fastens the control arm to the wheel carrier, helping keep the suspension arm securely mounted in its correct position. This connection is important for maintaining suspension geometry, wheel alignment, and stable handling.  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
•  Helps maintain correct suspension alignment and geometry
•  Supports stable wheel location during driving, braking, and cornering
•  Helps prevent loosening caused by road vibration and suspension movement
•  Provides a secure OE Match replacement for the original lock nut
•  Suitable for suspension repair, control arm replacement, or wheel carrier service

Suspension lock nuts are safety-critical fasteners and may lose locking strength after removal. They can also become corroded, damaged, rounded, or worn over time. Replacing the lock nut during suspension work helps ensure the control arm is secured correctly and reduces the risk of loosening after reassembly.

When to replace
•  This Part The control arm has been removed or replaced
•  The wheel carrier or suspension arm connection has been dismantled
•  The original nut is corroded, damaged, rounded, or seized
•  The nut no longer tightens or locks correctly
•  Suspension repairs or alignment-related work are being carried out
•  There is play, looseness, or noise from the control arm mounting area
•  As recommended during service where single-use locking hardware is removed

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99908444909

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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.

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99908444909

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Hexagon-head bolt (M14 × 1.5 × 90 mm) for Rear lower control arm.
This bolt secures the rear lower control arm to the subframe connection (left or right side), forming one of the key structural connections in the rear suspension system. It maintains the correct alignment and pivoting geometry required for stable handling, proper tire wear, and balanced ride quality.
Sold each,  2 required for the rear axle of the vehicle.

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2006 - 2008
Porsche 987C.2 Cayman 2009 - 2012

Diagram ref no 16

• Replacing: 90037816009, 90037819909, 90037820909, 90037820901
• Thread/Length: M14 × 1.5 × 90 mm
• Application: Rear axle – lower control arm to chassis connection

Suspension hardware is engineered to exact tolerances to handle extreme dynamic loads. Using Genuine Porsche bolts guarantees correct thread engagement, surface treatment, and tensile strength for the specific control arm design. This ensures consistent alignment, safety, and chassis rigidity under demanding driving conditions.

Replace this bolt when:
• Performing rear suspension or control-arm service.
• The original bolt is corroded, stretched, or damaged.
• Completing a full suspension refresh or alignment adjustment.

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90037820902

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Hexagon-head bolt (M14 × 1.5 × 75 mm) for Rear lower control arm.
This bolt secures the lower control arm to the coffin arm (rear sub-frame link), a critical mounting point that carries major suspension loads during braking, cornering, and acceleration. Proper clamping ensures correct rear axle geometry, stability, and tyre wear.
Sold each, 2 required for the rear axle of the vehicle.

Fits:
Porsche 996 Carrera 1998 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2006 - 2008
Porsche 987C.2 Cayman 2009 - 2012

Diagram ref no 10

• Replacing: 90037813509 (older part number)
• Thread/Length: M14 × 1.5 × 75 mm
• Application: Rear control arm to coffin arm mounting point

Suspension bolts in this location are subject to high load cycles, tolerance wear, and exposure to elements. If the original bolt is stretched, corroded, or re-used beyond service life, it can compromise alignment, introduce movement in the suspension joints, and lead to poor handling or uneven tyre wear. Replacing with the correct bolt restores the secure clamping required for optimal rear suspension performance.


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90037813501

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Control arm lower, Front.




Porsche 987 Boxster 2005-2012 FRONT
Porsche 987C Cayman 2005-2012 FRONT
Porsche 997 2006-2012 FRONT
Porsche 997 TURBO 2007-2013 FRONT

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Diagram ref no 3

Part Number: 99734104300

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99734104302

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Control Arm Lower, Front.
The OE Match Front Lower Control Arm is a premium-quality replacement suspension component designed to restore precise steering, suspension geometry and ride quality on compatible Porsche models. Manufactured to OE specifications for fit, strength and durability, the lower control arm maintains the correct position of the front wheel hub while allowing controlled suspension movement for predictable handling and braking performance.  

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• 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 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 Turbo 2010-13
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Diagram Ref No 3

Manufactured from high-strength forged or cast alloy (depending on the original application), complete with premium-quality rubber bushes and a precision-engineered ball joint where applicable, the control arm is built to withstand heavy cornering forces, braking loads and everyday road conditions. Precision-manufactured for direct OE-style installation, it restores the factory suspension characteristics while ensuring long-lasting reliability.  

What This Product Does:

• Locates and supports the front wheel hub assembly.
• Maintains correct front suspension geometry.
• Allows controlled suspension movement over uneven road surfaces.
• Supports precise steering response and vehicle stability.
• Helps ensure even tyre contact with the road.
• Reduces vibration and unwanted suspension movement.
• Restores factory ride quality and handling performance.
• Forms an essential part of the front suspension system.

Symptoms Of Wear Or Failure:

• Knocking or clunking noises from the front suspension.
• Excessive steering play or vague handling.
• Uneven or accelerated front tyre wear.
• Steering wheel vibration.
• Poor wheel alignment.
• Vehicle pulling to one side.
• Worn or split suspension bushes.
• Excessive play in the integrated ball joint (where applicable).
• Reduced braking stability.
• MOT or vehicle inspection failure due to worn suspension components.

Why Replacement Matters:

• The front lower control arm is subjected to continual loads from steering, braking, acceleration and suspension movement. Over time, the rubber bushes can deteriorate and the integrated ball joint can develop excessive play, reducing the suspension's ability to maintain correct wheel alignment and vehicle stability.
• A worn control arm can lead to poor handling, increased tyre wear, steering vibration and reduced braking confidence. Continued operation with damaged suspension components may also accelerate wear of other steering and suspension parts, leading to more extensive and costly repairs.
• Replacing a worn or damaged front lower control arm restores the original suspension geometry, improves steering precision and enhances ride comfort. The OE Match replacement provides factory-style fitment, premium-quality construction and long-lasting durability, helping maintain the responsive handling, safety and driving dynamics expected from your Porsche.

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99734104302

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Control arm lower, FRONT



Fits:
Porsche 987 Boxster 2005-2012 FRONT
Porsche 987C Cayman 2005-2012 FRONT
Porsche 997 2006-2012 FRONT
Porsche 997 TURBO 2007-2013 FRONT

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Diagram ref no. 3

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99734104302

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Control arm lower, FRONT



Fits:
Porsche 987 Boxster 2005-2012 FRONT
Porsche 987C Cayman 2005-2012 FRONT
Porsche 997 2006-2012 FRONT
Porsche 997 TURBO 2007-2013 FRONT

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Diagram ref no. 3

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99734104302

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Control arm lower, Rear.
This lower control arm (sometimes called “rear lateral arm / suspension arm") is used for the rear suspension of Porsche 987 (Boxster / Cayman) models — covering both Gen1 and Gen2. The part is supplied as a single arm (left or right). For best results and balanced suspension behaviour, replacement of both rear arms (left + right) is recommended when bushings or joints show wear.
Sold each, Fits left and right side.

Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012

Diagram ref no 8

•  Part Numbers / Cross-References: 98733104304 (current), 98733104302 / 98733104303 (previous numbers)

• Position: Rear lower control arm / lateral link - connects rear axle assembly to chassis/subframe, controlling wheel lateral and longitudinal position under dynamic loading.

• Functions: Maintains correct wheel alignment geometry under load, ensures stable rear-end handling, helps manage camber and toe changes, absorbs suspension loads, supports consistent tyre contact and handling predictability.

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98733104304

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Control arm lower, Rear.


(TRW are the Original Manufacture for Porsche)

Fits:
Porsche Boxster 987
Porsche Cayman 987C

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98733104304

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Control arm lower, Rear.


Fits:
Porsche Boxster 987
Porsche Cayman 987C

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98733104304

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