Power Steering Pipes / Hoses / Radiators

Power steering pressure hose. Pump To Rack.
Genuine Porsche hydraulic line engineered to deliver factory-correct steering assist on Porsche 928 models. As the primary high-pressure feed from the power steering pump to the steering rack, this hose ensures precise hydraulic pressure, smooth steering feel, and reliable performance under all driving conditions.

Fits:
For LHD (Left Hand Drive) cars
Porsche 928 1985 - 1990 

Diagram ref no 17

• System: Power-assisted steering - connects pump to steering rack (pressure line)

•  Typical Usage: Replacement of old or worn pressure hoses, power steering overhaul or maintenance, repair of fluid leaks or loss of steering assist.

Aging power steering hoses can harden, crack, or leak due to heat and hydraulic stress. A failing hose may lead to:
•  Loss of steering assist
•  Fluid leaks and pump starvation
•  Steering noise or inconsistent steering feel
•  Potential pump or rack damage due to pressure loss.
Replacing it with a Genuine Porsche hose restores secure hydraulic operation and maintains the car’s intended steering performance.

Related reference numbers
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92834744708

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Power steering pressure hose. Pump To Rack.
It carries high-pressure hydraulic fluid from the power-steering pump to the steering rack, enabling the assisted steering function that makes driving smoother and more controllable - especially at low speeds or when manoeuvring. 

Fits:
For LHD (Left Hand Drive) cars
Porsche 928 1985 - 1990 

Diagram ref no 17

• System: Power-assisted steering - connects pump to steering rack (pressure line)

•  Typical Usage: Replacement of old or worn pressure hoses, power steering overhaul or maintenance, repair of fluid leaks or loss of steering assist.

Over time, the factory power steering pressure hose can degrade due to heat, hydraulic stress, and age - leading to cracks, swelling or internal weakening. A failing hose may leak fluid, lose pressure, or collapse under load, causing hard steering, noisy pump operation, or complete loss of hydraulic assist. Replacing it with a correctly specified hose ensures reliable fluid delivery, restores steering assist performance, and protects other steering system components from undue stress.

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Related, superseded, cross reference or alternative numbers for comparison.

92834744708

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Power steering pressure line - Left Hand Drive (LHD)
From pump to steering rack

Fits:
Porsche 928 - 1978 to 1982
Porsche 928 S - 1981 to 1983

Diagram ref no 23

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92834744702

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Power steering pressure line.

Fits:
ONLY for RHD cars
Porsche 928 S (1985 - 1986)
Porsche 928 S4 (1987 - 1990)

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

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92734744702

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Power steering pump hose.

Fits:
Porsche 928 1978-86

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

OE Match power steering pump hose, a replacement component for repairs involving an ageing or leaking pump hose.

Fits

Porsche 928 1978-86

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

The hose carries fluid within the hydraulic power steering circuit at the pump. Its condition and connections matter when investigating fluid loss or servicing the steering hydraulics. This component is a hose, rather than a replacement pump or steering cooler.

Functions

• Provides a fluid passage within the pump circuit.
• Contains steering fluid along its installed route.
• Replaces a deteriorated hose when leakage or damage has been confirmed.
  
  

Technical Details

• Brand: OE Match.
• Part reference: 92834744501.
• Component: power steering pump hose.
• Listed engine applications: 4.5L and 4.7L, subject to the model and year details above.
  
  

Symptoms of Fault

• Wet patches or seepage around the hose and its connections.
• A falling power steering fluid level.
• Visible cracking, hardening or swelling of the hose.
• Increased steering effort or pump whining associated with low fluid.
  
  

These symptoms do not establish that the hose is the cause. Inspect neighbouring connections, seals and hydraulic components before deciding which parts require renewal.

Why Replacement Matters

Renewing a confirmed leaking or damaged hose addresses a source of fluid loss. Check adjoining fittings and supporting components during the repair, as an unresolved leak elsewhere can leave the same symptoms after installation. OE Match focuses on replacement components for Porsche applications, with original references and vehicle specifications used to assess suitability.

FAQs

Should other hoses be renewed at the same time?
Inspect them individually. Further replacement may be appropriate where neighbouring hoses also show deterioration or leakage.

Is flushing required?
Assess the fluid condition and follow the vehicle-specific service procedure. Flushing is particularly relevant if contamination is present.

What should be checked during fitting?
Confirm the routing and connections, avoid twisting the hose and use the specified seals or sealing washers where required. Check the completed repair for leaks.

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

92834744501

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Porsche 928 Power Steering Return Hose Repair Kit for Left Hand Drive (LHD)

Power steering return hoses on the Porsche 928 commonly begin to leak as the original rubber hardens and cracks with age. Heat, engine bay exposure and time cause deterioration, leading to fluid seepage or visible leaks.

Fits:

• Porsche 928S 4.7L 1981-83
• Porsche 928S2 4.7L 1984-86
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91

Compatibility by Model and Part Number

Porsche 928 S2 (1983–1986)
Hose A + B for Return Hose - 92834744906 /  92834744917 / 92834744918

Porsche 928 S4 / GT / GTS (1986–1992)
A + C for Return Hose – 92834744907 / 92834744911 / 92834744909 / 92834744916

Please confirm your exact model and part number before ordering.
Professional Installation Required
Each hose section is supplied with a dedicated crimp sleeve. Installation must be carried out by a professional to ensure correct crimping and secure sealing.

Complete OEM replacement hoses are expensive. This repair kit provides a practical and cost-effective alternative by replacing only the flexible rubber hose sections while allowing you to reuse the original steel pipe assemblies.

What This Repair Kit Does

This kit replaces the flexible sections of the low-pressure power steering return line. The return hose carries fluid back to the reservoir and operates at low pressure, making it suitable for high-quality reinforced silicone replacement hose.

By installing this repair kit, you can:

• Eliminate leaks from aged rubber sections
• Retain the original factory steel hard lines
• Avoid the cost of complete OEM hose assemblies
• Restore safe and reliable power steering operation

Why Upgrade to This Silicone Repair Kit?

Significant Cost Saving
Original Porsche 928 power steering return hoses can be very expensive. This repair solution allows you to refurbish the existing assembly at a fraction of the cost.

High-Strength Silicone Construction
Manufactured from very strong, heat-resistant silicone, the replacement hose sections provide improved durability over ageing factory rubber.

Designed Specifically for 928 Applications
This kit is engineered to suit the correct hose diameters and routing used on Porsche 928 S2, S3, S4, GT and GTS models.

Safety Reminder
Power steering fluid is flammable. It is important to regularly inspect return hoses and address leaks immediately to reduce fire risk within the engine bay.

Related reference numbers
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928347449

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Power Steering Return Hose, For Left Hand Drive (LHD).
The Genuine Porsche Power Steering Return Hose (Part Number: 92834744918) is an original equipment hydraulic hose assembly designed for selected left-hand-drive Porsche 928 models manufactured between 1983 and 1986.

Fits:

• Porsche 928S 4.7L 1983
• Porsche 928S2 4.7L 1984-86  

Diagram Ref No 24

This component forms part of the vehicle's hydraulic power-assisted steering system, providing the return path for power steering fluid travelling from the steering rack back towards the fluid reservoir.

The Porsche 928 uses a hydraulic power steering system to reduce steering effort and provide controlled steering assistance, particularly when manoeuvring, parking and travelling at lower speeds.

The system relies on a continuous circulation of hydraulic fluid between the reservoir, power steering pump and steering rack.

The return hose is an essential part of this circulation system, allowing fluid leaving the steering rack to return to the reservoir for reuse.

Porsche 92834744918 is a low-pressure return-line assembly, not the high-pressure pump-to-rack hose.

The original return-line arrangement incorporates flexible hose sections and rigid metal pipework to follow the specified routing around the engine bay and steering components.

Manufactured to Porsche's original equipment specification, the Genuine Porsche replacement is intended to provide the correct fit, connections and routing for the compatible left-hand-drive steering system.

Over time, the original flexible rubber sections can deteriorate because of heat, hydraulic fluid exposure, vibration and ageing.

Rubber may become hard and brittle, develop cracks or begin leaking around the hose ends and connections.

Corrosion of the associated metal pipework and deterioration of the joining sections may also lead to fluid loss.

A leaking return hose can cause the power steering reservoir level to fall, potentially introducing air into the hydraulic system and affecting steering assistance.

If fluid loss continues, the power steering pump may become noisy or operate with insufficient lubrication, increasing the risk of component damage.

Replacing a worn or leaking return hose with the correct Genuine Porsche assembly helps restore a secure hydraulic return path, reduce fluid loss and maintain dependable power steering operation.

Ideal for classic Porsche 928 maintenance, power steering refurbishment, hydraulic leak repairs and vehicle restoration, this Genuine Porsche Power Steering Return Hose provides a factory-specified replacement for the appropriate left-hand-drive models.

What This Product Does:
The power steering return hose carries hydraulic fluid from the steering rack back towards the power steering reservoir.

The steering system operates through a continuous hydraulic circuit:

• Fluid is drawn from the reservoir into the power steering pump.
• The pump delivers pressurised fluid towards the steering rack.
• Hydraulic pressure assists the driver's steering input.
• Fluid leaving the steering rack passes into the return circuit.
• The return hose carries the fluid back towards the reservoir, where it can be recirculated.

The return hose operates at a lower pressure than the main pressure delivery line, but it must still withstand the system's operating fluid, temperatures and normal flow conditions.

Its principal functions include:

• Returning power steering fluid: Carries hydraulic fluid away from the steering rack and back towards the reservoir.
• Maintaining fluid circulation: Completes the hydraulic circuit required for power-assisted steering.
• Providing a secure fluid passage: Helps prevent unwanted leakage from the return system.
• Accommodating vibration and movement: Flexible sections accommodate normal movement between components.
• Maintaining correct hydraulic routing: Follows the specified path within the Porsche 928 engine bay and steering assembly.
• Supporting reservoir fluid levels: Helps prevent fluid loss caused by defective return-line components.
• Protecting the power steering pump: A sound return circuit helps maintain the fluid supply needed for reliable pump operation.
• Supporting consistent steering assistance: Helps the hydraulic system operate without avoidable fluid loss or air ingress.
• Maintaining original installation geometry: Provides the correct hose configuration for compatible LHD vehicles.
• Supporting long-term steering reliability: Maintains an essential connection in the power steering system.

Symptoms Of Wear Or Failure:
The Porsche 928 power steering return hose is exposed to engine bay heat, vibration, hydraulic fluid and environmental contamination.

As the original hose ages, deterioration may affect both the flexible sections and the associated connections.

Common signs of wear or failure include:

• Visible power steering fluid leaks: Hydraulic fluid may escape from a split hose or deteriorated connection.
• Fluid accumulation beneath the vehicle: Leaks may leave spots or puddles beneath the engine bay or steering assembly.
• Low power steering fluid level: Repeated fluid loss may require topping up the reservoir.
• Hardened rubber hose: Ageing may cause the flexible sections to lose elasticity.
• Surface cracking: Small cracks can develop in deteriorated rubber.
• Swollen or softened hose sections: Fluid-related deterioration may affect the hose structure.
• Oil residue around hose connections: Dampness may indicate leakage at a joint or crimp.
• Corroded metal pipework: Rust or pitting may weaken the rigid sections of the return assembly.
• Damaged or loose connections: Worn fastening components may allow fluid to escape.
• Power steering pump whining: A low reservoir level may allow air to enter the system.
• Air bubbles or foaming in the reservoir: Air ingress may occur when the system operates with insufficient fluid.
• Intermittent steering assistance: Significant fluid loss or aeration may affect hydraulic performance.
• Increased steering effort: Severe fluid loss can reduce available power steering assistance.
• Fluid contamination around nearby components: Escaping hydraulic fluid may spread onto hoses, brackets or other parts.
• Persistent hydraulic fluid odour: Leaked fluid may create a noticeable smell, particularly near hot components.
• Visible damage following previous repairs: Incorrect hose routing or unsuitable replacement sections may cause deterioration.

Why Replacement Matters:
Replacing a damaged power steering return hose is important for maintaining the integrity of the Porsche 928 hydraulic steering system.

Even though the return hose operates on the low-pressure side, deterioration can cause significant fluid loss.

A cracked or leaking hose may allow the reservoir level to fall, affecting the fluid supply to the pump.

Continued operation with insufficient fluid may introduce air, produce steering noise and increase wear within the hydraulic system.

Installing the correct Genuine Porsche replacement helps to:

• Eliminate leaks from a defective hose: Replace cracked or leaking return-line components.
• Restore the hydraulic return circuit: Maintain the intended fluid path from the steering rack towards the reservoir.
• Reduce power steering fluid loss: Help maintain the correct reservoir level.
• Protect the power steering pump: Reduce the risk of fluid starvation caused by a leaking return line.
• Reduce hydraulic system aeration: Help prevent air entering the circuit through fluid loss.
• Maintain dependable steering assistance: Support normal hydraulic circulation.
• Replace deteriorated rubber: Renew ageing sections affected by heat and time.
• Address damaged metal pipework: Replace an assembly affected by corrosion where applicable.
• Restore correct hose routing: Maintain the specified left-hand-drive installation arrangement.
• Reduce fluid contamination: Prevent continued leakage onto surrounding components.
• Support preventive maintenance: Address deterioration before a larger hydraulic failure develops.
• Maintain original Porsche specifications: Use a component designed for the compatible steering configuration.
• Support classic Porsche restoration: Restore the original hydraulic steering system arrangement.

Replacement is recommended when the hose is leaking, cracked, swollen, severely hardened or otherwise damaged.

If the associated steering rack, pump or reservoir connections are defective, those components may require separate attention.

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

92834744918

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Power steering return hose.

Fits:
for LHD cars only
Porsche 928 1978-82
Porsche 928 S 1980-82

Click 'Zoom in' for large parts diagram.
Diagram ref no 33

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