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Power Steering Pipes / Hoses / Radiators

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DISPLAYING 1 to 13 (of 13 products)
Special Order item
99951255400::1
Product Information
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Hose clamp, 12-22 mm - Various Applications.

porsche

Fits:
Porsche 928 - 1978 to 1986
Porsche 924 - 1976 to 1986
Porsche 924S - 1986 to 1988
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995



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99951255400
99951255400

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94434745902/1
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Porsche 924S / 944 - Power Steering Oil Cooler Return Line

Maintain Proper Steering Fluid Circulation and Cooling

The power steering oil cooler return line for the Porsche 924S and 944 is an essential hydraulic hose within the power assisted steering system. This return line carries cooled steering fluid from the oil cooler back to the reservoir, ensuring continuous circulation and stable operating temperatures.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988

Diagram Ref No 31

Maintaining correct fluid return flow is critical to protect the steering pump, maintain steering assist and preserve overall hydraulic system performance.

What the Power Steering Oil Cooler Return Line Does

In the Porsche 924S and 944, the power steering system uses hydraulic pressure to reduce steering effort. As the steering fluid circulates, it generates heat, particularly during spirited driving or extended use.

The oil cooler helps regulate fluid temperature, and the return line:

  • Transfers cooled hydraulic fluid back to the reservoir
  • Maintains steady fluid circulation
  • Supports consistent steering assistance
  • Reduces heat-related wear on steering components
  • Helps prevent pump strain and noise

Without a properly functioning return line, the system can lose fluid or experience overheating, affecting steering reliability.

Why Oil Cooler Return Lines Fail

Over time, the oil cooler return hose can deteriorate due to:

  • Heat exposure from the engine bay
  • Continuous contact with hydraulic fluid
  • Rubber hardening and cracking
  • Age-related material fatigue
  • Vibration and movement during driving
  • Corrosion at metal connections

Because Porsche 924S and 944 models are now classic vehicles, original hoses are often decades old and at risk of sudden failure.

Common signs of failure include:

  • Power steering fluid leaks under the front of the car
  • Damp or oily residue near hose fittings
  • Low power steering fluid levels
  • Whining noise from the steering pump
  • Increased steering effort

When You Should Replace the Return Line

You should replace the power steering oil cooler return line if:

  • Visible cracks or brittleness are present
  • There are signs of fluid seepage
  • Steering feels heavier than normal
  • he steering pump becomes noisy
  • You are servicing the steering rack or pump
  • The vehicle is undergoing restoration or preventative maintenance

Proactive replacement reduces the risk of fluid loss and protects expensive steering components from damage.

At Design911, we supply high-quality power steering hoses manufactured to meet OEM standards. This oil cooler return line is designed for correct fitment and reliable performance under daily driving and performance conditions.

Replacing aged steering hoses improves system reliability, reduces the risk of leaks and maintains precise steering control.

Key Benefits at a Glance

  • Direct fit for Porsche 924S and 944
  • Returns cooled steering fluid to reservoir
  • Maintains stable hydraulic circulation
  • Reduces risk of leaks and overheating
  • Ideal for maintenance or restoration
  • Helps preserve steering pump and rack longevity       



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

94434745902
94434745903
94434745909
94434745910
94434745902
94434745905

The product you are viewing cross references to these numbers
Special Order item
94434744703
Product Information
Product Information
Power steering pressure line for LHD Cars

porsche

Fits:
For cars (M657) with power assisted steering
For LHD Cars
Porsche 924S 1986-88
Porsche 944 1985-91
Porsche 968 1992-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 29.

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

94434744703
94434744702
94434744703

The product you are viewing cross references to these numbers
94434744704/1
Product Information
Product Information
Power steering pressure line for LHD Cars

Fits:
For cars (M657) with power assisted steering
For LHD Cars
Porsche 924S 1986-88
Porsche 944 1985-91
Porsche 968 1992-95

Diagram ref no 29.

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

94434744704
94434744702
94434744703
94434744701
94434744704

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Special Order item
94534744702
Product Information
Product Information
Power Steering Pressure Line for RHD Cars.

Fits:

Porsche 924S 1986-88 (M657)
Porsche 944 1982-91 (M657)
Porsche 968 1992-95 (M657)

M657 - Cars with power assisted steering

Diagram ref no 29.

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

94534744702
94534744702

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94534744702/1
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Product Information

Porsche 924S / 944 / 968 - High Pressure Power Steering Hose – Right Hand Drive

Precision Hydraulic Steering Performance for RHD Models

The high pressure power steering hose for Right Hand Drive (RHD) Porsche 924S, 944 and 968 models is a critical hydraulic component within the power assisted steering system. Specifically designed for RHD configuration vehicles, this hose ensures correct routing and secure connection between the power steering pump and steering rack.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94

Diagram ref no 43

Because steering layout differs between Left Hand Drive and Right Hand Drive cars, correct hose fitment is essential to maintain proper hydraulic pressure and safe steering operation.

What This High Pressure Power Steering Hose Does

The power steering pump generates hydraulic pressure which assists steering input by reducing steering effort. The high pressure hose transfers this pressurised steering fluid to the steering rack.

This hose is responsible for:

  • Carrying high pressure hydraulic fluid safely
  • Maintaining consistent steering assistance
  • Withstanding engine bay heat and vibration
  • Preventing fluid leaks under pressure
  • Ensuring correct routing for RHD steering systems

A properly functioning hose ensures smooth, responsive steering performance in daily and spirited driving conditions.

Why High Pressure Steering Hoses Fail

High pressure power steering hoses operate under constant hydraulic stress. Over time, exposure to heat, vibration and fluid pressure can lead to deterioration.

Common failure causes include:

  • Rubber hardening and cracking due to age
  • Internal hose breakdown from fluid exposure
  • Heat cycling within the engine bay
  • Fatigue from pressure pulsation
  • Corrosion at metal fittings and crimp points
  • Incorrect routing or strain in RHD applications

On classic Porsche transaxle cars such as the 924S, 944 and 968, original hoses are often decades old, increasing the risk of leaks or sudden failure.

When You Should Replace This Hose

You should replace the high pressure RHD power steering hose if you experience:

  • Power steering fluid leaks beneath the vehicle
  • Dampness around hose fittings
  • Steering pump whining noise
  • Increased steering effort
  • Inconsistent or jerky steering feel
  • Visible cracking or swelling of the hose
  • Low power steering fluid levels

Proactive replacement is recommended during steering rack service, power steering pump replacement or full restoration projects on RHD vehicles.

Failure to replace a worn hose can result in fluid loss, damage to the steering pump and potential loss of power assistance.

At Design911, we supply high-quality power steering hoses designed specifically for Porsche transaxle models. This Right Hand Drive (RHD) high pressure hose is manufactured to meet OEM standards, ensuring precise fitment and durability under hydraulic load.

Using the correct RHD-specific hose ensures proper routing, secure sealing and reliable steering assistance.

Key Benefits at a Glance

  • Direct replacement for part number 94534744702
  • Designed specifically for Right Hand Drive models
  • High pressure hydraulic steering hose
  • Restores smooth and reliable steering assist
  • Reduces risk of fluid leaks and pump damage
  • Suitable for Porsche 924S, 944 and 968 RHD vehicles       



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

94534744702
94534744702

The product you are viewing cross references to these numbers
Special Order item
94434744907
Product Information
Product Information
Power steering return line for LHD (left hand drive) cars

Fits:
Porsche 924S 1986 - 1988
Porsche 944 1985 - 1991
Porsche 968 1992 - 1995

Diagram ref no 30

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94434744907
94434744906
94434744907

The product you are viewing cross references to these numbers
Special Order item
99923035701
Product Information
Product Information
Power steering suction hose fitting.

porsche

Fits:
Porsche 924 S 1986-88 Cars with Power assist steering (M657)
Porsche 944 1985-88 Cars with Power assist steering (M657)
Porsche 944 1989-91
Porsche 968 1992-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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

99923035701
94434744505
99923035701
99923035702

The product you are viewing cross references to these numbers
Special Order item
94434744506
Product Information
Product Information
Power steering suction hose. From the power steering reservoir to the pump.

porsche

Fits:
Porsche 924 S 1986-88 Cars with Power assist steering (M657) * Requires a Fitting to update and re-route from original hose (part no 99923035701).
Porsche 944 1985-88 Cars with Power assist steering (M657) * Requires a Fitting to update and re-route from original hose (part no 99923035701).
Porsche 944 1989-91
Porsche 968 1992-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 26

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

94434744506
94434744505
99923035701
99923035702
94434744506

The product you are viewing cross references to these numbers
94434744506/1
Product Information
Product Information
Power steering suction hose. From the power steering reservoir to the pump.

oematch

Fits:
Porsche 924 S 1986-88 Cars with Power assist steering (M657) Requires a Fitting to update and re-route from original hose (part no 99923035701).
Porsche 944 1985-88 Cars with Power assist steering (M657) Requires a Fitting to update and re-route from original hose (part no 99923035701).
Porsche 944 1989-91
Porsche 968 1992-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 26

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

94434744506
94434744505
99923035701
99923035702

The product you are viewing cross references to these numbers
Special Order item
94434744700
Product Information
Product Information

Power Steering Pressure Line – Left Hand Drive (LHD)

The power steering pressure line is a critical hydraulic component in the steering system of the Porsche 944 (left-hand drive models). This high-pressure hose delivers hydraulic fluid from the power steering pump to the steering rack, enabling smooth, controlled steering input and reducing driver effort.

Fits:

  • Porsche 944 2.5L 8V 1982-85

Diagram ref no 29

At Design911, this replacement power steering pressure line is supplied to meet OEM specifications, ensuring correct fitment, reliable pressure handling, and long-term durability for classic Porsche 944 models.

What Does the Power Steering Pressure Line Do?

The power steering pressure line transfers pressurised hydraulic fluid through the steering system.

Core Functions:

  • Deliver high-pressure fluid from the pump to the steering rack
  • Enable smooth, assisted steering operation
  • Maintain consistent steering feel and response
  • Support safe vehicle control at low and high speeds
  • Ensure proper operation of the hydraulic steering system

A healthy pressure line is essential for predictable and effortless steering.

Why Do Power Steering Pressure Lines Fail?

Over time, power steering pressure lines are exposed to heat, pressure, and vibration.

Common Failure Causes:

  • Internal hose degradation from heat and age
  • Cracked or hardened rubber sections
  • Corrosion of metal fittings or crimped joints
  • Fluid leaks caused by seal or hose failure
  • Pressure loss leading to heavy or inconsistent steering

On classic Porsche 944 models, ageing hoses are a common source of leaks and steering issues.

Why Replace the Power Steering Pressure Line?

Replacing a worn or leaking pressure line restores steering performance and protects the system.

Replacement Benefits:

  • Restore smooth, consistent power-assisted steering
  • Prevent hydraulic fluid leaks and pressure loss
  • Protect the power steering pump and steering rack
  • Maintain correct steering feel and vehicle safety
  • Ensure OEM-correct fitment for classic Porsche reliability

Replacing the pressure line proactively helps avoid costly secondary damage.

Product Highlights

  • Genuine-spec power steering pressure line
  • Designed for Porsche 944 (1982–1985) LHD models
  • High-pressure rated for hydraulic steering systems
  • Precision-engineered for correct routing and fit
  • Ideal for maintenance, repair, and restoration projects



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

94434744700
94434744700

The product you are viewing cross references to these numbers
94434744700/1
Product Information
Product Information

Power Steering Pressure Line – Left Hand Drive (LHD)

The power steering pressure line is a critical hydraulic component in the steering system of the Porsche 944 (left-hand drive models). This high-pressure hose delivers hydraulic fluid from the power steering pump to the steering rack, enabling smooth, controlled steering input and reducing driver effort.

Fits:

  • Porsche 944 2.5L 8V 1982-85

Diagram ref no 29

At Design911, this replacement power steering pressure line is supplied to meet OEM specifications, ensuring correct fitment, reliable pressure handling, and long-term durability for classic Porsche 944 models.

What Does the Power Steering Pressure Line Do?

The power steering pressure line transfers pressurised hydraulic fluid through the steering system.

Core Functions:

  • Deliver high-pressure fluid from the pump to the steering rack
  • Enable smooth, assisted steering operation
  • Maintain consistent steering feel and response
  • Support safe vehicle control at low and high speeds
  • Ensure proper operation of the hydraulic steering system

A healthy pressure line is essential for predictable and effortless steering.

Why Do Power Steering Pressure Lines Fail?

Over time, power steering pressure lines are exposed to heat, pressure, and vibration.

Common Failure Causes:

  • Internal hose degradation from heat and age
  • Cracked or hardened rubber sections
  • Corrosion of metal fittings or crimped joints
  • Fluid leaks caused by seal or hose failure
  • Pressure loss leading to heavy or inconsistent steering

On classic Porsche 944 models, ageing hoses are a common source of leaks and steering issues.

Why Replace the Power Steering Pressure Line?

Replacing a worn or leaking pressure line restores steering performance and protects the system.

Replacement Benefits:

  • Restore smooth, consistent power-assisted steering
  • Prevent hydraulic fluid leaks and pressure loss
  • Protect the power steering pump and steering rack
  • Maintain correct steering feel and vehicle safety
  • Ensure OEM-correct fitment for classic Porsche reliability

Replacing the pressure line proactively helps avoid costly secondary damage.

Product Highlights

  • Genuine-spec power steering pressure line
  • Designed for Porsche 944 (1982–1985) LHD models
  • High-pressure rated for hydraulic steering systems
  • Precision-engineered for correct routing and fit
  • Ideal for maintenance, repair, and restoration projects



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

94434744700
94434744700

The product you are viewing cross references to these numbers
Special Order item
94434745902
Product Information
Product Information
Return line to cool power steering oil.

porsche

Fits:
Porsche 944 1982-85

This product supersedes Porsche's old part numbers:
- 94434745900

Click 'Zoom in' for large parts diagram.
Diagram ref no 31

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

94434745902
94434745902
94434745900
94434745910

The product you are viewing cross references to these numbers
DISPLAYING 1 to 13 (of 13 products)
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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