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Power Steering Pipes / Hoses / Radiators

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DISPLAYING 1 to 16 (of 31 products)
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Special Order item
98634773903
Product Information
Product Information
Bracket for Power steering pressure line.

porsche

Fits:
Porsche 986 Boxster >>2002

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Diagram ref no 13

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98634773903
98634773903

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Special Order item
98634774902
Product Information
Product Information
Bracket for Power steering pressure line.

porsche

Fits:
Porsche 986 Boxster >>2002

Click 'Zoom in' for large parts diagram.
Diagram ref no 14

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98634774902
98634774902

The product you are viewing cross references to these numbers
Special Order item
99634767
Product Information
Product Information
Bracket for power steering pressure line. For RHD cars

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 996 Carrera 1998-05

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99634767
99634767101
99634767201

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Special Order item
98634775901
Product Information
Product Information
Bracket for Power steering return line.

porsche

Fits:
Porsche 986 Boxster 1997-04

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Diagram ref no 12

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98634775901
98634775901

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Special Order item
98631454501
Product Information
Product Information
Breather hose for the power steering pump reservoir. 

Fits:
Porsche 986 Boxster / S 1997-04

Diagram ref. 2.

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98631454501
98631454500
98631454501

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Special Order item
99951255400
Product Information
Product Information
Hose clamp, 12-22 mm - Various Applications.

porsche

Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 986 Boxster - 1997 to 2004
Porsche 996 - 1997 to 2005
Porsche 997.1 - 2005 to 2008



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99951255400
99951255400

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00004330574
Product Information
Product Information
Power steering fluid.  1 Litre

Pentosin Hydraulic System Fluid

porsche

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00004330574
00004320656
00004330574

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Special Order item
99923054340
Product Information
Product Information
Power steering line seal set, Pressure line to rack.
Sold each.

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1  Cayman 2006 - 2008
Porsche 996 Carrera 1998 - 2005
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 GT2-RS 2010 - 2013

Diagram ref no 17

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99923054340
99923054340

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Special Order item
99923054240
Product Information
Product Information
Power steering line seal, return line to rack.
Sold each.

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1  Cayman 2006 - 2008
Porsche 996 Carrera 1998 - 2005
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 GT2-RS 2010 - 2013

Diagram ref no 18

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99923054240
99923054240

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Special Order item
99734756000
Product Information
Product Information
Power steering pressure line holder, for RHD cars

porsche

Fits:
for RHD cars
Porsche 997.1 2005-08
Porsche 997.2 2009-12
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12

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Diagram ref no 20

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99734756000
99734756000

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Special Order item
99634745112
Product Information
Product Information
Power Steering Pressure Line, LHD.
Restore the high-pressure hydraulic path in your power-steering system with this genuine Porsche pressure line. Designed for Porsche 911 (996 series) and compatible Boxster models, this hose connects the power-steering pump to the steering gear/rack, ensuring optimum assist performance, secure fluid containment and long-term reliability.
For Left Hand Drive Cars ONLY!

Fits:
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche 996 C2 3.6L 2002-2005
  • Porsche 996 GT2 2003-05
  • Porsche 996 GT3 MKI 1999-02
  • Porsche 996 GT3 MKII 2003>>

Diagram Ref No 1

What This Product Does:

  • The pressure line carries high-pressure hydraulic fluid from the power-steering pump to the steering gear or rack. This enables the system to provide assist to the driver’s steering input.
  • Correct hose integrity ensures fluid stays contained under pressure, the steering assist remains consistent, and no performance loss or fluid loss occurs.
  • A failure here can impact steering feel, safety, and can lead to fluid loss or damage.

Symptoms & Signs You Might Need Replacement:
  • Visible fluid leak: oil or power-steering fluid puddle or wet spot beneath the car, near the steering gear or hose.
  • Hard steering or increased effort: If the hose is leaking or collapsed internally, the assist will suffer and you may find the wheel harder to turn.
  • Whining or groaning noise when turning the steering wheel — indicates stress on the pump due to fluid loss or internal hose restriction.
  • Hose condition: cracks, abrasions, bulges, fitting damage, especially in older vehicles or where routing is near heat/exhaust components.
  • During service: If you’re replacing power-steering components (pump, rack, hoses) and the hose is original or aged, replacing the pressure line is wise.

Why Replacement Matters:
  • Steering safety & performance: A pressure line failure can cause sudden loss of assist or fluid loss — replacing before major failure is proactive.
  • Prevents collateral damage: A leaking hose may cause fluid contamination of other components, damage the pump, or even cause burnt rubber in the bay.



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99634745112
99634745112
99634745109
99634745110

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Special Order item
99734756412
Product Information
Product Information
Power steering pressure line, for RHD cars.

porsche

Fits:
Porsche 987.2 Boxster 2009-12
Porsche 987C.2 Cayman 2009-12
Porsche 997.2 Carrera 2009-12
Porsche 997.2 Turbo 2010-13
Porsche 997 GT3 2007-11

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Diagram ref no 17

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99734756412
99734756411
99734756412

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Special Order item
99634745231
Product Information
Product Information
Power steering pressure line, for RHD cars.

porsche

Fits:
Porsche 986 Boxster >>2001 RHD cars
Porsche 996 Carrera >>2001 RHD cars , Rear-wheel drive
F             >> 99-4S630 356
F             >> 99-4S603 928
F             >> 99-4S642 725
Porsche 996 GT2 >> 2001 RHD cars
Porsche 996 GT3 1999-04

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Diagram ref no 1

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99634745231

99634745204
99634745231

The product you are viewing cross references to these numbers
Special Order item
98634744318
Product Information
Product Information
Power steering pressure line.

porsche

Fits:
Porsche 986 Boxster >>2003

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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98634744318
98634744309
98634744310
98634744312
98634744313
98634744316
98634744318

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Special Order item
98634744319
Product Information
Product Information
Power steering pressure line.

porsche

Fits:
Porsche 986 Boxster 2003>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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98634744319
98634744319
98634744315
98634744317

The product you are viewing cross references to these numbers
Special Order item
9A134744316
Product Information
Product Information
Power steering pressure line.

porsche

Fits:
Porsche 987.2 Boxster 2009-12
Porsche 987.2C Cayman 2009-12

Click 'Zoom in' for large parts diagram.
Diagram ref no 7
DISPLAYING 1 to 16 (of 31 products)
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Also found on these pages
About Power Steering Pipes / Hoses / Radiators

Porsche Power Steering Pipes, Hoses & Radiators | Design911 Hydraulic Components for Precision Steering

Power steering pipes, hoses, and radiators are vital for maintaining smooth, responsive steering performance in your Porsche. These components transport and cool the hydraulic fluid that powers the steering system, ensuring precise control, minimal resistance, and consistent handling under all driving conditions. A well-maintained hydraulic circuit not only enhances steering feel but also protects your steering pump, rack, and associated components from wear and overheating.

At Design911, we offer an extensive selection of power steering pipes, hoses, and cooling radiators, engineered for exact fitment, reliability, and high-pressure performance. Manufactured using durable materials such as reinforced rubber, stainless steel, and aluminium, our range is ideal for servicing, restoration, and performance upgrades — keeping your Porsche’s steering system operating at its sharpest.

What Do Power Steering Pipes, Hoses & Radiators Do?

Power steering pipes and hoses transfer hydraulic fluid between the pump, rack, and reservoir, while radiators (or coolers) regulate fluid temperature for consistent performance.

Core Functions:
• Deliver hydraulic fluid to assist steering input.
• Maintain consistent pressure within the steering circuit.
• Prevent overheating of steering fluid during high-load use.
• Ensure responsive, effortless steering at all speeds.
• Reduce wear on the pump, seals, and steering rack.

Together, these parts form the backbone of your Porsche’s power steering system, ensuring smooth handling and precise feedback whether on the road or track.

Why Do Power Steering Components Fail or Degrade?

Continuous heat, pressure, and exposure to fluids can cause deterioration of hoses and pipes over time, while radiators may corrode or leak.

Common Causes of Failure Include:
• Cracked or brittle hoses from age or heat exposure.
• Corrosion or pitting in metal pipes.
• Leaks at joints or seals from fluid pressure fluctuations.
• Blocked or damaged steering coolers reducing efficiency.
• Contamination of hydraulic fluid causing internal wear.

When these components fail, drivers may experience stiff steering, fluid leaks, noise, or overheating — all of which can lead to expensive steering system damage if left unaddressed.

Why Replace or Upgrade Your Porsche Power Steering Pipes, Hoses & Radiators?

Replacing or upgrading these components restores safe, consistent hydraulic operation and improves overall steering precision. High-quality materials and modern design offer improved durability, pressure resistance, and corrosion protection.

Key Benefits:
• Restores smooth, consistent steering response.
• Prevents fluid leaks and overheating.
• Extends life of steering pumps and racks.
• Constructed from premium, heat- and pressure-resistant materials.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Cayenne, and Macan models.
• Ideal for restorations, repairs, or performance upgrades.

Design911’s Porsche power steering pipes, hoses, and radiators provide durability, precision, and reliability — ensuring confident handling and performance on every drive.

Highlights

• Premium Porsche power steering hoses, pipes, and cooling radiators.
• Engineered for precision fitment and leak-free performance.
• Reinforced construction for high-pressure durability.
• Corrosion-resistant and temperature-stable materials.
• Suitable for both classic and modern Porsche models.
• Perfect for maintenance, restoration, or upgrades.

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