Original Porsche Part Genuine Porsche part 99634745026

Steering rack pressure line, Supply. For RHD cars.



Fits:
For RHD cars
Porsche 996 2002>> All-wheel drive (M339)

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99634745229

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Steering rack return line for RHD cars.


Fits
RHD cars / All-wheel drive (M339)
Porsche 996 C4 / C4S 2002>>
Porsche 996 Turbo 2002>>

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99634745027

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Power steering return line, for RHD cars



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

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Related reference numbers
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99634745012

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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

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99634745231

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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

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