Skip the auto shop - Our mechanics make house calls

How Long Does a Power Steering Input Shaft Seal Last?

Power Steering Input Shaft Seal

To maneuver your car, the steering wheel connects to a steering shaft, which runs through the dash and then down to the gearbox where it also joins the power steering system. Because the power steering system in most cars today is hydraulic, seals need to be used to prevent fluid from leaking out. The power steering input shaft seal is designed to ensure that fluid isn’t lost from the junction point of the steering shaft and power steering system.

There are actually two seals here. The outer seal is really just a dust cover, and it’s designed to prevent dirt, dust and debris from damaging the inner seal. The inner one is the actual power steering input shaft seal. Its job is to keep fluid in the system, while preventing contaminants from entering.

Like other seals on your car, the power steering input shaft seal doesn’t really have an “active” or “inactive” state. It’s always working, because there is always fluid in the system. There is no lifespan for this seal, and it’s not part of regular maintenance service, either.

With that being said, this seal is definitely subject to wear and tear, as well as exposure to caustic power steering fluid. Over time, it will become brittle and crack, allowing fluid to seep out. A more serious leak might allow fluid to leave the system in quantities significant enough to affect your steering.

It’s important to know the signs and symptoms that indicate a possible leak from the power steering input shaft. There aren’t that many, but a few things you can watch for include the following:

  • Low power steering fluid (this indicates a leak somewhere in the system)
  • Power steering fluid under the car near the back of the engine area (where the power steering rack is located)
  • Turning the steering wheel produces a whining noise from the power steering pump (a symptom of low power steering fluid)

If you notice any of these symptoms, the entire power steering system needs to be checked, including the power steering input shaft seal. A certified mechanic can help to diagnose and replace your power steering input shaft seal if required.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...


Related questions

Q: AC only works for 15 minutes before it stops blowing cold air

A leaking power steering system should be taken care of as soon as possible. The fluid in the system cools and lubricates the power steering pump that spins at a high rate of speed which can fail prematurely if it...

Q: Engine, power steering, and brakes shut off

Given you had a "sudden" failure, you might check the crank position sensor first. This component instructs the ignition module when to fire the spark plugs. If the crank position sensor is OK, work your way up the electrical path....

Q: Power steering

Hello, the whining noise the old pump had is aeration usually from low fluid level that will damage the pump, that means there is a leak of fluid. This system is a closed type system no leaks allowed. First check...