do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Power Steering Pumps
By OE Match
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
OE Match O-ring for power steering pump drive train, 40 x 4, for Porsche 964 and 993 models. This replacement sealing O-ring helps prevent oil or fluid leakage around the power steering pump drive area and supports correct drivetrain sealing during service or repair.
Sold individually
Fits:
Porsche 964 1989 -1994
Porsche 993 1994 - 1998
Diagram ref no 3
The O-ring seals the power steering pump drive train connection to help prevent fluid seepage and maintain system integrity. A correctly fitted seal helps keep the pump drive area clean, reduces leakage risk, and supports reliable power steering system operation.
Functions
• Replaces the power steering pump drive train
• O-ring Seals the pump drive train connection
• Helps prevent fluid leaks and seepage
• Supports correct power steering system sealing
• Suitable for pump drive, steering system, or engine bay service
• Replaces hardened, flattened, cracked, swollen, or damaged
• O-rings OE Match replacement for Porsche 964 and 993 power steering repair
Why Replace This Part?
O-rings can harden, flatten, crack, swell, or lose sealing ability due to age, heat, fluid exposure, pressure cycles, and vibration. A worn or damaged O-ring may allow oil or power steering fluid seepage around the drive train area, causing residue, fluid loss, contamination, or failed inspection. Replacing the O-ring helps restore proper sealing and helps prevent repeat leaks.
When to Replace This Part
• Fluid seepage is present around the power steering pump drive area
• The power steering pump or drive train components have been removed
• The original O-ring is hard, flattened, cracked, swollen, or damaged
• Power steering system sealing work is being carried out
• Engine bay fluid residue is visible near the pump drive assembly
• Preventative replacement is required during steering system service
• The vehicle is undergoing Porsche 964 or 993 restoration
Where it fits on the car
This O-ring fits within the power steering pump drive train / pump drive sealing area on Porsche 964 and 993 models. It forms part of the power steering pump drive sealing arrangement.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970729340
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
