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Power Steering Pumps

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DISPLAYING 1 to 16 (of 16 products)
STEERINGSET986996LHD
Product Information
Product Information
Steering rack and power steering pump set for LHD (Left Hand drive) cars,
This set includes:
 1 × New Steering Rack (OE reference 996 347 011 11)
 1 × Power Steering Pump (OE reference 996 314 050 03)

Fits:
* M657 - for cars with power assisted steering
Porsche 986 Boxster 1997 - 2004
Porsche 996 Carrera 1997 - 2004
Left Hand Drive (LHD) Cars (like Europe)

*** We strongly recommend replacing the power steering pump at the same time as the steering rack. Swarf (metal particles) in the power steering system can circulate and cause damage to both components.

When ordered together, the steering rack and pump can be purchased as a discounted bundle, providing better long-term reliability and value.

If you choose to replace only the steering rack and, upon return of your exchange unit, we discover that the rack bar is scored or contaminated with swarf, this indicates that debris is present in the system. In such cases, we will advise replacing the pump as well — however, it will then be charged at the full retail price plus postage.

Please note: if we have advised that there is swarf in the system and you choose not to replace both components, any future warranty claims related to this issue will not be valid.

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Related, superseded, cross reference or alternative numbers for comparison.

STEERINGSET986996LHD
411091500322
99631405002
99631405003
99631402004
99631402005
99731402000
99634701111
99634701110
99634701107
99634701104
99634701105
99634701106

The product you are viewing cross references to these numbers
STEERINGSET986996LHD.OE
Product Information
Product Information
Steering rack and power steering pump set for LHD (Left Hand drive) cars,
This set includes:
 1 × New Genuine Porsche Steering Rack (OE reference 996 347 011 11)
 1 × Power Steering Pump (OE reference 996 314 050 03)

Fits:
* M657 - for cars with power assisted steering
Porsche 986 Boxster 1997 - 2004
Porsche 996 Carrera 1997 - 2004
Left Hand Drive (LHD) Cars (like Europe)

*** We strongly recommend replacing the power steering pump at the same time as the steering rack. Swarf (metal particles) in the power steering system can circulate and cause damage to both components.

When ordered together, the steering rack and pump can be purchased as a discounted bundle, providing better long-term reliability and value.

If you choose to replace only the steering rack and, upon return of your exchange unit, we discover that the rack bar is scored or contaminated with swarf, this indicates that debris is present in the system. In such cases, we will advise replacing the pump as well — however, it will then be charged at the full retail price plus postage.

Please note: if we have advised that there is swarf in the system and you choose not to replace both components, any future warranty claims related to this issue will not be valid.

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

STEERINGSET986996LHD.OE
411091500322
99631405002
99631405003
99631402004
99631402005
99731402000
99634701111
99634701110
99634701107
99634701104
99634701105
99634701106

The product you are viewing cross references to these numbers
STEERINGSET986996LHD.R
Product Information
Product Information
Steering rack and power steering pump set for LHD (Left Hand drive) cars,
This set includes:
 1 × Reconditioned Steering Rack (OE reference 996 347 011 11) **
 1 × Power Steering Pump (OE reference 996 314 050 03)

Fits:
* M657 - for cars with power assisted steering
Porsche 986 Boxster 1997 - 2004
Porsche 996 Carrera 1997 - 2004
Left Hand Drive (LHD) Cars (like Europe)

*** We strongly recommend replacing the power steering pump at the same time as the steering rack. Swarf (metal particles) in the power steering system can circulate and cause damage to both components.

When ordered together, the steering rack and pump can be purchased as a discounted bundle, providing better long-term reliability and value.

If you choose to replace only the steering rack and, upon return of your exchange unit, we discover that the rack bar is scored or contaminated with swarf, this indicates that debris is present in the system. In such cases, we will advise replacing the pump as well — however, it will then be charged at the full retail price plus postage.

Please note: if we have advised that there is swarf in the system and you choose not to replace both components, any future warranty claims related to this issue will not be valid.

** PLEASE NOTE: 
  • The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
  • Please note, surcharge refunds often take an average of 1 to 2 weeks to be approved by the manufacturer.
  • Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
  • All surcharges and exchanges are subject to our terms and conditions.


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

STEERINGSET986996LHD.R
411091500322
99631405002
99631405003
99631402004
99631402005
99731402000
99634701111
99634701110
99634701107
99634701104
99634701105
99634701106

The product you are viewing cross references to these numbers
STEERINGSET986996RHD.OE
Product Information
Product Information
Steering rack and power steering pump set for RHD (Right Hand drive) cars,
This set includes:
 1 × NEW Genuine Porsche Steering Rack (OE reference 996 347 012 11)
 1 × OE Match Power Steering Pump (OE reference 996 314 050 03)

Fits:
* M657 - for cars with power assisted steering
Porsche 986 Boxster 1997 - 2004
Porsche 996 Carrera 1997 - 2004
Right Hand Drive (RHD) Cars (like UK)

*** We strongly recommend replacing the power steering pump at the same time as the steering rack. Swarf (metal particles) in the power steering system can circulate and cause damage to both components.

When ordered together, the steering rack and pump can be purchased as a discounted bundle, providing better long-term reliability and value.

If you choose to replace only the steering rack and, upon return of your exchange unit, we discover that the rack bar is scored or contaminated with swarf, this indicates that debris is present in the system. In such cases, we will advise replacing the pump as well — however, it will then be charged at the full retail price plus postage.

Please note: if we have advised that there is swarf in the system and you choose not to replace both components, any future warranty claims related to this issue will not be valid.


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

STEERINGSET986996RHD.OE
411091500322
99631405002
99631405003
99631402004
99631402005
99731402000
99634701210
99634701208
99634701205
96347012087
99634701204
99634701207
99634701206

The product you are viewing cross references to these numbers
STEERINGSET986996RHD.R
Product Information
Product Information
Steering rack and power steering pump set for RHD (Right Hand drive) cars,
This set includes:
 1 × Reconditioned Steering Rack (OE reference  996 347 012 11) **
 1 × Power Steering Pump (OE reference 996 314 050 03)

Fits:
* M657 - for cars with power assisted steering
Porsche 986 Boxster 1997 - 2004
Porsche 996 Carrera 1997 - 2004
Right Hand Drive (RHD) Cars (like UK)

*** We strongly recommend replacing the power steering pump at the same time as the steering rack. Swarf (metal particles) in the power steering system can circulate and cause damage to both components.

When ordered together, the steering rack and pump can be purchased as a discounted bundle, providing better long-term reliability and value.

If you choose to replace only the steering rack and, upon return of your exchange unit, we discover that the rack bar is scored or contaminated with swarf, this indicates that debris is present in the system. In such cases, we will advise replacing the pump as well — however, it will then be charged at the full retail price plus postage.

Please note: if we have advised that there is swarf in the system and you choose not to replace both components, any future warranty claims related to this issue will not be valid.

** PLEASE NOTE: 
  • The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
  • Please note, surcharge refunds often take an average of 1 to 2 weeks to be approved by the manufacturer.
  • Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
  • All surcharges and exchanges are subject to our terms and conditions.


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

STEERINGSET986996RHD.R
411091500322
99631405002
99631405003
99631402004
99631402005
99731402000
99634701210
99634701208
99634701205
96347012087
99634701204
99634701207
99634701206

The product you are viewing cross references to these numbers
Special Order item
99731492031
Product Information
Product Information
Power Steering Container.

porsche

Fits:
For Cars with 6-Speed Manual Transmission (I480)
Porsche 996 Turbo 2001-05 (I480)
Porsche 997 Turbo 2007-09 (I480)

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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

99731492031
99731492031
99731492030

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

porsche

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
99631409104
Product Information
Product Information
Power Steering Pump Bracket.

porsche

Fits:
Porsche 996 GT3 1999-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

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

99631409104
99631409104
99631409103
99631409102

The product you are viewing cross references to these numbers
Special Order item
99731422001
Product Information
Product Information
Power Steering Pump Oil Container.

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 Carrera 1998-05
Porsche 997 Carrera MKI 2005-08

This product supersedes Porsche's old part numbers:
- 99631422002
- 99631422003

Click 'zoom in' for large parts diagram.
Diagram ref no 8.

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

99731422001
99731422000
99631422003
99631422002

The product you are viewing cross references to these numbers
99731422001/1
Product Information
Product Information
Power Steering Pump Oil Container.

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 Carrera 1998-05
Porsche 997 Carrera MKI 2005-08

This product supersedes Porsche's old part numbers:
- 99631422002
- 99631422003

Click 'zoom in' for large parts diagram.
Diagram ref no 8.

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

99731422001
99731422000
99631422003
99631422002
99731422001

The product you are viewing cross references to these numbers
Special Order item
99631405003
Product Information
Product Information
Power steering pump.

porsche

Fits:
  * M657 - for cars with power assisted steering
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 Carrera 1998-05
Porsche 997 Carrera 2005-08

This part number has been superseded from previous numbers:
- 99631405002,

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

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

99631405003
99631405002
99631405003

The product you are viewing cross references to these numbers
99631405003/2
Product Information
Product Information
Power steering pump. 
The power steering pump converts engine power into hydraulic pressure for the power assisted steering system, enabling smooth, effortless steering and consistent responsiveness. Built to OE specification.

Fits:
  * M657 - for cars with power assisted steering
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2005 - 2008
Porsche 996 Carrera 1998 - 2005
Porsche 997.1 Carrera 2005 - 2008

Diagram ref no 9

Position on Vehicle: Mounted within the engine bay on the front accessory drive system, connected to the power-steering fluid reservoir and rack/column assembly.

•  Cross-Reference / Alternative Numbers: OEM number 996 314 050 03 (sometimes referenced as 99631405003); supersedes part number 996 314 050 02.

•  Applications: Replacement whenever the original pump shows symptoms such as whining noise, fluid leakage, reduced steering assist or erratic steering feel - helping to restore proper steering function and driver confidence.

The power steering pump is central to the assistive steering system, providing hydraulic pressure needed for effortless steering and precise control. When the pump begins to fail - through internal wear, leakage, or loss of hydraulic efficiency - drivers may experience noisy operation, heavier steering effort, or inconsistent responsiveness. Replacing it with a fresh unit restores hydraulic integrity, ensures consistent steering feel and prevents further wear on associated steering components.

When and why to replace:
Steering becomes notably heavier or varied in effort than expected.
Noticeable whining or groaning noise when steering, especially at low speeds.
Visible fluid leakage from the pump or associated lines/fittings.
After other steering components (rack, links) have been serviced - a failing pump would compromise the rebuild.
On high-mileage vehicles where original pump has been in service long and may be approaching end-of-life.


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

99631405003
411091500322
99631405002
99631405003
54280
996.314.020.04
996.314.020.05
996.314.050.02
996.314.050.03
997.314.020.00
99631402004
99631402005
99731402000

The product you are viewing cross references to these numbers
Special Order item
996314050X
Product Information
Product Information
exchange
Reconditioned Power Steering Pump. 99631405002

Please note:
Reconditioned units are sold on an exchange basis, A surcharge of £161.03 will be held and then refunded when the old one is returned.

porsche

Fits:
Porsche 986 Boxster 1998-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 Carrera 1998-05
Porsche 997 Carrera 2005-08


Please note: This product is sold on an exchange the deposit we will refund after you have returned your old part.


    PLEASE NOTE:
  • The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
  • Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
  • Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
  • All surcharges and exchanges are subject to our terms and conditions.




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

996314050X
996314050X
99631405002

The product you are viewing cross references to these numbers
Special Order item
99631422351
Product Information
Product Information
Power steering tank cap.

porsche

Fits:
Porsche 996 Turbo 2001-05
Porsche 996 GT3 1999-05

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

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

99631422351
99631422351

The product you are viewing cross references to these numbers
Special Order item
99631443105
Product Information
Product Information
Support bracket power steering pump. 

porsche

Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987.1 Boxster - 2005 to 2008
Porsche 987.1 Cayman - 2006 - 2008
Porsche 996 Carrera 2 / 4 / 4S- 1997 to 2005
Porsche 997.1 Carrera 2 / Carrera 4- 2005 to 2008
Porsche 997.1 Carrera 2S / Carrera 4S - 2005 to 2008

Click 'Zoom in' for large parts diagram.
Diagram ref no 11


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

99631443105
99631443105

The product you are viewing cross references to these numbers
Special Order item
99631405053/1
Product Information
Product Information
Replacement power steering pump.

oematch

Fits:
Porsche 996 Turbo 2001-05 - Tiptronic transmission only.
Porsche 996 GT2 2001-05
Porsche 996 GT3 / GT3 RS 1999-05
--
Porsche 997.1 Turbo 2007-09 - Tiptronic transmission only.
Porsche 997 GT2 / GT2 RS 2007-13
Porsche 997 GT3 / GT3 RS / GT3 RS 4.0L 2007-11


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

99631405053
99631405051
99631405052
99631405053
996314050BX
996314050DX
996314050DU

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 16 products)
Also found on these pages
About Power Steering Pumps

Porsche Power Steering Pumps, Hoses & Radiators | Design911 Hydraulic Components for Smooth & Precise Handling

Power steering pumps, hoses, and radiators are the key components that ensure your Porsche’s steering system operates smoothly, quietly, and efficiently. The power steering pump pressurises hydraulic fluid, while hoses transport it throughout the system, and radiators (or coolers) regulate temperature to prevent overheating. Together, these components provide effortless steering control, precise feedback, and the responsive handling that defines Porsche driving performance.

At Design911, we offer a comprehensive range of power steering pumps, hoses, and radiators engineered for precision fitment, durability, and high-pressure operation. Manufactured using premium materials, each component is designed to perform under demanding conditions — whether for daily driving, performance tuning, or restoration projects. Our range helps maintain steering precision, extend component life, and deliver long-term reliability.

⚙️ What Do Power Steering Pumps, Hoses & Radiators Do?

These interconnected components form the core of your Porsche’s hydraulic steering system, providing consistent power assist and cooling for maximum control.

Core Functions:
• The pump generates hydraulic pressure to assist steering input.
• Hoses and pipes transport pressurised fluid throughout the system.
• The radiator (cooler) regulates temperature for consistent operation.
• Maintain smooth, controlled steering effort at all speeds.
• Protect the steering rack and pump from overheating and wear.

This system ensures that steering remains light yet responsive — essential for both precision handling and driver comfort.

Why Do Power Steering Components Fail or Degrade?

Due to constant exposure to heat, pressure, and fluid flow, these components are subject to gradual wear and degradation over time.

Common Causes of Failure Include:
• Leaks from aged seals, fittings, or cracked hoses.
• Contaminated or deteriorated steering fluid reducing lubrication.
• Pump bearing or vane wear from low or dirty fluid.
• Corrosion or pitting in metal pipes and radiators.
• Blocked cooling circuits leading to overheating.

Failure in any of these parts can cause noise, fluid leaks, stiff steering, or even total system failure — making timely replacement critical for safety and reliability.

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

Replacing worn or damaged power steering components restores hydraulic pressure, cooling efficiency, and overall steering feel. Upgrading to improved materials enhances longevity and performance, particularly for high-demand or motorsport applications.

Key Benefits:
• Restores smooth, responsive steering performance.
• Eliminates leaks, whine, or vibration from failing components.
• Extends the life of steering racks and seals.
• Constructed from corrosion- and heat-resistant materials.
• Available for Porsche 911, 944, 968, Boxster, Cayman, Panamera, Cayenne, and Macan models.
• Ideal for maintenance, restorations, or high-performance upgrades.

Design911’s Porsche power steering pumps, hoses, and radiators combine engineering precision, reliability, and superior materials — ensuring your Porsche’s steering stays sharp, responsive, and fluid.

Highlights

• Premium Porsche power steering pumps, hoses, and radiators.
• Engineered for precision fitment and reliable performance.
• High-pressure and temperature-resistant materials.
• Reduces steering effort and enhances handling comfort.
• Suitable for both classic and modern Porsche models.
• Perfect for servicing, restoration, or performance tuning.

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