Please wait… 
Please wait while we process your order,
do not press the back button… 
Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk Facebook Instagram

Power Steering Pipes / Hoses / Radiators

Refine by Car Type
Filter by brand
DISPLAYING 1 to 16 (of 34 products)
1 2 3
Special Order item
98634773903
Product Information
Product Information
Bracket for Power steering pressure line.



Fits:
Porsche 986 Boxster >>2002

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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Related, superseded, cross reference or alternative numbers for comparison.

98634773903
98634773903

The product you are viewing cross references to these numbers
Special Order item
98634774902
Product Information
Product Information
Bracket for Power steering pressure line.



Fits:
Porsche 986 Boxster >>2002

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

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Related, superseded, cross reference or alternative numbers for comparison.

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



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

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Related, superseded, cross reference or alternative numbers for comparison.

99634767
99634767101
99634767201

The product you are viewing cross references to these numbers
Special Order item
98634775901
Product Information
Product Information
Bracket for Power steering return line.



Fits:
Porsche 986 Boxster 1997-04

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

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Related, superseded, cross reference or alternative numbers for comparison.

98634775901
98634775901

The product you are viewing cross references to these numbers
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.

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Related, superseded, cross reference or alternative numbers for comparison.

98631454501
98631454500
98631454501

The product you are viewing cross references to these numbers
Special Order item
99951255400
Product Information
Product Information
Hose clamp, 12-22 mm - Various Applications.



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



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Related, superseded, cross reference or alternative numbers for comparison.

99951255400
99951255400

The product you are viewing cross references to these numbers
00004330574/1
Product Information
Product Information
Hydraulic Fluid for central, power steering and level control systems.
1 Litre

OE Porsche ref numbers: 
000 043 203 33 | 000 043 206 56 | 000 043 305 74


Product Information:
Low compressibility and high corrosion protection
Excellent lubricating properties, high ageing-resistance and adhesion properties
Prevention of deposits and foam formation
Compliance with the requirements of vehicle manufacturers

Vehicle Repairs. We've Got What It Takes.
The febi range of high-quality, specialist hydraulic oils provide optimised low-temperature performance. They are based on advanced additives and selected mineral base oils, and are developed specifically for use in central hydraulic systems such as power steering, convertible roof mechanisms and hydro-pneumatic suspension systems.

Quality by Conviction:
Oils from febi are not universal products, but rather are tailored to the special requirements of vehicle manufacturers. Only the right oil can guarantee the safe functioning of the hydraulic systems in the vehicle. High-quality hydraulic fluids from febi are therefore precisely matched to the special requirements of vehicle manufacturers.


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

00004330574
00004320333
00004320656
00004330574

The product you are viewing cross references to these numbers
Special Order item
00004330574
Product Information
Product Information
Power steering fluid.  1 Litre

Pentosin Hydraulic System Fluid



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

00004330574
00004320656
00004330574

The product you are viewing cross references to these numbers
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

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

99923054340
99923054340

The product you are viewing cross references to these numbers
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

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

99923054240
99923054240

The product you are viewing cross references to these numbers
Special Order item
99734756000
Product Information
Product Information
Power steering pressure line holder, for RHD cars



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

Click 'Zoom in' for large parts diagram.
Diagram ref no 20

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

99734756000
99734756000

The product you are viewing cross references to these numbers
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.



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

99634745112
99634745112
99634745109
99634745110

The product you are viewing cross references to these numbers
Special Order item
99634745113
Product Information
Product Information
Power Steering Pressure Line, LHD.

The Porsche Power Steering Pressure Line 99634745113 is a genuine replacement hydraulic line for the power-assisted steering system on selected left-hand-drive Porsche 986 Boxster and 996 models.

Fits:

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-01
  • Porsche Boxster S 986 3.2L 1999-01
  • Porsche 996 C2 3.4L 1997-08/01
  • Porsche 996 C4 3.4L 1997-08/01
  • Porsche 996 C2 3.6L 09/01-2001
  • Porsche 996 C4 3.6L 09/01-2001
  • Porsche 996 C4S 3.6L 09/01-2001
  • Porsche 996 TURBO 2000-01
  • Porsche 996 GT2 2001-01
  • Porsche 996 GT3 MKI 1999-01

Diagram Ref No 1

The pressure line carries hydraulic fluid under pressure through the power steering system, helping transfer hydraulic assistance to the steering rack when the steering wheel is turned.

Because the line operates under significant hydraulic pressure, secure fittings and leak-free pipework are essential. This genuine Porsche replacement is suitable for renewing an original pressure line that has become corroded, damaged, cracked or is leaking.

What This Product Does:
The hydraulic power steering system reduces the physical effort required to turn the front wheels.

The power steering pump circulates hydraulic fluid under pressure, while the pressure line carries this fluid towards the steering gear where hydraulic assistance is applied.

Its main functions include:

  • Carrying pressurised power steering fluid
  • Supplying hydraulic pressure to the steering system
  • Supporting power-assisted steering operation
  • Helping reduce steering effort
  • Maintaining a sealed hydraulic circuit
  • Supporting smooth and consistent steering response
  • Maintaining the correct factory routing between steering components
  • Preventing hydraulic fluid loss when correctly sealed

The pressure line itself does not generate hydraulic pressure; it safely transfers the pressure produced by the power steering pump.

Symptoms Of Wear Or Failure:
Power steering lines are exposed to hydraulic pressure, engine and road heat, vibration, moisture and ageing.

Common symptoms of a failing pressure line include:

  • Visible power steering fluid leakage
  • Wet or oily deposits around the line
  • Leakage around unions or fittings
  • Falling power steering fluid level
  • Fluid stains beneath the vehicle
  • Steering becoming heavier than normal
  • Intermittent loss of steering assistance
  • Whining or groaning from the power steering pump
  • Noise when turning the steering wheel
  • Foaming or aeration in the power steering fluid
  • Cracked or deteriorated flexible hose sections
  • Corrosion on metal pipe sections
  • Damaged or distorted pipework
  • Burning-fluid smell if leaked fluid reaches hot components

Heavy steering or pump noise can also be caused by a failing pump, steering rack or other hydraulic lines, so the complete system should be inspected before replacement.

Why Replacement Matters:
The power steering pressure line must contain hydraulic fluid at substantial operating pressure.

If the line develops a leak, the fluid level can gradually fall and hydraulic assistance may become weaker or inconsistent. A significant leak can eventually result in a noticeable increase in steering effort.

Continued operation with insufficient power steering fluid can also cause the pump to run without adequate lubrication and cooling, potentially resulting in expensive pump damage.

A deteriorated pressure line can also fail suddenly, causing rapid fluid loss.

Replacing a leaking or damaged pressure line helps restore:

  • Correct hydraulic pressure
  • Reliable power-assisted steering
  • Consistent steering effort
  • A sealed power steering circuit
  • Correct fluid circulation
  • Protection of the power steering pump and steering rack
  • Factory-correct line routing and connections

Addressing a small leak early can therefore help prevent damage to more expensive steering components.



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

99634745113
99634745111
99634745108
99634745113

The product you are viewing cross references to these numbers
Special Order item
99734756412
Product Information
Product Information
Power steering pressure line, for RHD cars.



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

Click 'Zoom in' for large parts diagram.
Diagram ref no 17

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

99734756412
99734756411
99734756412

The product you are viewing cross references to these numbers
Special Order item
99634745231
Product Information
Product Information
Power steering pressure line, for RHD cars.



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

Click 'Zoom in' for large parts diagram.

Diagram ref no 1

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

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.



Fits:
Porsche 986 Boxster >>2003

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

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

98634744318
98634744309
98634744310
98634744312
98634744313
98634744316
98634744318

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 34 products)
1 2 3
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.

You may also like
Popular Models