Automatic Transmission Selector Shaft Seals

Replacement Parts > Transmission Replacements > Gaskets and Sealing Systems

Automatic Transmission Selector Shaft Seals

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What is an Automatic Transmission Selector Shaft Seal?

An Automatic Transmission Selector Shaft Seal is a round rubber seal that sits between the transmission selector shaft and the transmission case on automatic vehicles. It is designed to keep fluid and dirt out of the transmission while allowing the shift selector shaft to rotate freely.

How do I know if my Automatic Transmission Selector Shaft Seal is faulty?

If your Automatic Transmission Selector Shaft Seal is faulty, you may notice a leak of transmission fluid, or you may hear a grinding or rattling noise coming from the transmission when you shift gears. You may also notice increased difficulty in shifting gears, or that your transmission shifts suddenly and hard.

Can a faulty Automatic Transmission Selector Shaft Seal cause damage to my car?

Yes, a faulty Automatic Transmission Selector Shaft Seal can cause damage to your transmission and other components. If left unchecked, it can lead to major transmission damage, which can be expensive to repair or replace.

How do I replace my Automatic Transmission Selector Shaft Seal?

Replacing an Automatic Transmission Selector Shaft Seal is relatively easy, but it does require some basic mechanical skills. Here are the steps:

  1. Raise the vehicle and place it on jack stands.
  2. Disconnect the negative battery cable.
  3. Remove the transmission pan.
  4. Remove the old seal and clean the surface of the selector shaft.
  5. Apply a thin coat of transmission fluid to the new seal.
  6. Install the new seal and torque it to the proper specifications.
  7. Reinstall the transmission pan, reconnect the negative battery cable, and lower the vehicle.


How often should I inspect my Automatic Transmission Selector Shaft Seal?

It is recommended that you inspect your Automatic Transmission Selector Shaft Seal every 20,000 miles or so, as part of your regular maintenance schedule. This will help you identify any potential problems before they become serious, and help keep your transmission running smoothly.