Steering rack. Porsche 987 Boxster / 987C Cayman / 997 RHD (Right Hand Drive) cars

NEW Steering rack, for RHD (Right Hand Drive) vehicles.
The steering rack’s primary role is to convert the driver’s steering wheel movement into precise lateral motion that turns the front wheels. It operates through a rack-and-pinion mechanism, where a small toothed gear (the pinion) engages a toothed bar (the rack). As the steering wheel turns, the pinion rotates, moving the rack left or right - steering the front wheels accordingly.

Fits:
For RHD (Right Hand Drive) cars (I099)
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2005 - 2008
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 Carrera 2009 - 2012
Porsche 997.1 Turbo 2010 - 2013
Porsche 997 GT3 2007 - 2011

Diagram ref no 1

• Position on Vehicle: Front steering rack assembly mounted under the front body structure, linking the steering column to the front tie-rods and controlling lateral wheel movement.

• Cross-Reference / Alternative Numbers: OEM Porsche part number: 997 347 012 09 (also shown as 99734701209), Supersedes earlier reference numbers 99734701204 / 99734701205 / 99734701206 / 99734701207 / 99734701208

• Applications: Replacement when the original steering rack shows signs of wear, leakages, play, inconsistent assist or compromised steering feel - maintaining the authentic Porsche driving experience.

The steering gear is fundamental to accurate, safe and confident vehicle control. A worn, leaking or loose rack can introduce play, reduce steering precision, cause drift or uneven tyre wear, and compromise your vehicle’s handling integrity. Replacing it with the genuine Porsche part ensures factory-calibre performance, correct geometry, and preserves your car’s handling heritage.

When and why to replace:
• Observed steering fluid leak or torn boots at the rack end.
• Noticeable play or looseness in the steering wheel or vague centre feel.
• Heavy or inconsistent steering assistance, especially at low speeds.
• Noise or harshness when steering through bumps or turns.
• During major front-end or steering system service when access simplifies replacement.
• High-mileage vehicle where the original rack has done significant duty and may be near its service life.

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Related, superseded, cross reference or alternative numbers for comparison.

99734701209

The product you are viewing cross references to these numbers