Steering rack. Porsche 997 / 987 Boxster / 987C Cayman - LHD  ❭  99734701111

Power Steering Rack – Left Hand Drive (LHD)

The power steering rack is a critical steering component responsible for converting steering wheel input into precise, controlled movement of the front wheels. By using hydraulic pressure, the rack significantly reduces steering effort while maintaining the sharp, responsive feel Porsche is known for.

• Porsche Boxster 987 2.7L 2005 -08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• 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 GT3 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 GT3 2010-11
• Porsche 997 MKII Turbo 2010-13
• Porsche 997 MKII GT2 RS 2011-13
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08

On performance-focused sports cars such as the 997 Carrera, Boxster 987 and Cayman 987, the steering rack plays a vital role in road feedback, cornering stability and driver confidence—especially at higher speeds and during spirited driving.

What Does a Power Steering Rack Do?

The steering rack transfers movement from the steering column to the front wheels while hydraulic assistance helps reduce effort at the wheel.
This ensures:

• Smooth and accurate steering response
• Consistent feedback through corners
• Reduced driver fatigue during low-speed manoeuvres
• Predictable handling under load

A worn or failing rack compromises steering precision, safety and overall driving enjoyment.

Why Do Steering Racks Fail?

Over time, steering racks are exposed to high pressure, heat, road debris and vibration, leading to gradual wear. Common failure causes include:

• Internal seal degradation causing hydraulic fluid leaks
• Wear in the rack shaft and pinion gear
• Corrosion from moisture ingress
• Damage caused by contaminated power steering fluid

Typical symptoms of failure include:

• Heavy or inconsistent steering feel
• Power steering fluid leaks
• Knocking or play in the steering
• Steering pull or poor return to centre

Why Replace the Steering Rack?

Replacing a worn steering rack restores:

• Precise steering control
• Correct hydraulic assistance
• Safe and predictable handling
• Confidence at speed and during cornering

Ignoring steering rack issues can accelerate wear on related components such as track rods, pumps and suspension joints, increasing long-term repair costs.