This control arm set (left + right) provides a complete replacement for the front lower suspension arms on Porsche 997 models. Installing both arms as a matched pair ensures consistent alignment, even tyre wear, and balanced handling on both sides of the vehicle.
SET OF 2

Porsche 997.1 C4 / C4S 2005 -2008
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 C4 / C4S 2009 -2012
Porsche 997.2 Turbo 2010 - 2013
Diagram ref no 5
This product supersedes Porsche's old part numbers:
- 99734307302 (LEFT) / 99734307402 (RIGHT)
Ideal for suspension refreshes, MOT repairs, or performance handling restoration.
This control arm maintains precise suspension geometry and keeps the wheel correctly aligned under all driving conditions. It absorbs vibration and road shock through its integrated bushings, helping to deliver smooth ride quality and sharp steering response. By keeping the wheel carrier securely located, it ensures predictable braking, stable cornering, and the refined handling expected from a Porsche. Replacing the arm restores proper suspension behaviour when the original bushings or joints have worn out.
Over time, the control arm and its bushings can wear, crack, or develop excessive play, which negatively affects steering accuracy and suspension stability. This can lead to clunking noises, wandering steering, uneven tyre wear, and reduced confidence during high-speed driving. Installing a new arm restores tight, precise handling and ensures the car remains safe, stable, and compliant with factory performance standards.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99734307X03
The product you are viewing cross references to these numbers
- 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
- Porsche 997 MKII Turbo 2010-13


