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Power Steering Pumps
By OE Match
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
This set includes:
1 × Reconditioned Genuine Porsche Steering Rack (OE reference 997 347 012 FX)
1 × OE Match Power Steering Pump (OE reference 996 314 050 03)
Fits:
* M657 - for cars with power assisted steering
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2006 - 2008
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.1 Turbo 2007 - 2009
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Related, superseded, cross reference or alternative numbers for comparison.
STEERINGSET987997RHD.OE
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
This set includes:
1 × Reconditioned Steering Rack (OE reference 997 347 012 09) **
1 × OE Match Power Steering Pump (OE reference 996 314 050 03)
Fits:
* M657 - for cars with power assisted steering
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2006 - 2008
Porsche 997.1 Carrera 2005 - 2008
Porsche 997.1 Turbo 2007 - 2009
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.
STEERINGSET987997RHD.R
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
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
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
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
The product you are viewing cross references to these numbers
OEMatch Power Steering Pumps — Durability, Sealing, Performance
OEMatch Power Steering Pumps for Porsche models restore hydraulic assist, reduce noise and leaks, and help maintain consistent steering effort. The collection covers pumps plus associated hoses and coolers used in routine maintenance, restoration and higher-demand use, with parts chosen for Porsche applications.
Available Types
- Power steering pumps (mechanical and electric variants)
- High-pressure and return hoses
- Cooling radiators and inline coolers
Understanding OEMatch Power Steering Pumps
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original power steering pumps. OE (Original Equipment) refers to parts matching original specifications for the power steering pumps and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM power steering pumps engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
The pump pressurises hydraulic fluid to assist steering input, hoses route that fluid around the circuit, and a cooler or radiator controls fluid temperature to prevent overheating. Together these parts preserve steering feel, protect seals and bearings, and support consistent performance across a wide range of Porsche models.
Benefits Include
- Restores consistent hydraulic pressure and steering assist
- Eliminates leaks and associated noise or loss of assist
- Protects steering racks and seals from accelerated wear
Why Power Steering Pumps Wear and Fail
- Leaking seals, fittings or cracked hose assemblies
- Contaminated or degraded steering fluid reducing lubrication
- Pump bearing or vane wear from low or dirty fluid and overheating
The Importance of Replacing with OEMatch Power Steering Pumps
Timely replacement restores hydraulic assist and removes potential sources of leaks or noise that can affect steering precision and safety. For Porsche vehicles, maintaining correct pressure and cooling helps prevent secondary damage to the steering rack and related seals; replacing worn items also reduces the risk of sudden loss of assist during normal driving or demanding use.
Advantages
- Direct-fit alternatives engineered to match original dimensions and tolerances where applicable
- Materials chosen for resistance to heat, pressure and corrosion
- Options that support maintenance, restoration and performance needs
