Honda Civic Transmission Output Shaft Seal Replacement

This video shows how to replace a leaking transmission output shaft seal on a 1997 Honda Civic, but should also work for Civic manufactured during 1996-2000.


You will also learn how to replace a drive axle, because it is taken out when the seal is replaced. Remember you do not have to take the rubber boot off, it was easier for me to so I was able to get a good grip. Also, make sure when installing the seal it is flush with the transmission case, you do not want to force it and push it back too far or it will be ruined by other moving parts inside the transmission. I received estimates from 3 different transmission shops to do this transmission seal replacement ranging from $120-$170. The seal only cost $16, and it took my 1 hour to replace. Tools Needed: 17mm Socket 32mm Socket Seal Torque Wrench Screwdriver (flathead) Pliers Jack stand Car Used: 1997 Honda Civic EX Coupe 5 Speed Manual.

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16 Responses to “Honda Civic Transmission Output Shaft Seal Replacement”

  1. sweetlikeADAM says:

    DUDE. Why the hell did you take the boot off of your CV shaft? That could have costed you a new CV shaft… All you have to do was pry the end of the shaft out of the transmission.

  2. nruzicka2006 says:

    i know i shouldnt have taken it off, it was my first time doing it so i didnt know how much force i needed to get it off, so i took it off to get a better grip in it…. but now i have learned just to pry it off b/c there is a little clip that holds it in

  3. Koeninsegg says:

    Heeey thank you so much !! I needed to see a how to for this job…. im going to do the same stuff on my civic this weekend… both sides. I have an amazing leaking right from the axles…

    In your case, the leak stopped?

  4. opsvideo2008 says:

    Thanks for posting your video. You sure gave us viewers one of the best video pictures of how the transmission end of the axle shaft and the seal look like. It was sharp, clear and a long good look at the real thing so we no longer have to imagine how the transmission end looks like.

  5. opsvideo2008 says:

    You are welcome. In fact, it is us viewers who are indebted to all you people out there who posted your videos to so generously share with us how it is done. The information shared is invaluable. Because of it, I very seldom go to my mechanic to get my car repaired; I do it by myself, get a better job done and use the money saved to buy the necessary tools.

  6. nruzicka2006 says:

    I would suggest bringing the shop an OEM Honda seal from the Honda dealership. I ended up replacing my seal 6-7 times until i got the Honda brand seal from the dealership and that works the best. the seal i think is about $15

  7. rosesing26 says:

    My daughter has a 97 civic. The transmission started leaking shortly after we bought it, used. My husband had someone look at it and he said he thought it was a seal but couldn’t be sure. He recommended to just keep putting trans fluid in it, as it would cost about $900 to fix. Now the trans slips a lot and when my husband went to put fluid in in went straight to the ground. Do you think what you replaced in this video is what’s wrong?

  8. nruzicka2006 says:

    This repair was done on a manual transmission civic, i do not believe that the seal i replaced in this video is what is causing your leak. if right when he filled the trans with fluid and it leaked straight out that sounds like a different problem. i would take it to a honda dealership, have them look at it for free find out where the leak is, then go to a local mechanic tell him the problem and get it fixed

  9. loganclark37 says:

    I am having the front axels replaced on a 99 Civic DX. should i go ahead and purchace a new transmission seal and have it installed as well?

  10. nruzicka2006 says:

    If they are not leaking there should be no need to replace the transmission output seals, because if you replace them there is a possibility that they could leak from being installed wrong or some other error. So if I were you, I would just replace the axles and make sure when replacing them that you do not rip the lower ball joint boot which keeps the grease inside when you take the hub off.

  11. simabro says:

    did you break a nut with a torque wrench??

  12. nruzicka2006 says:

    I broke the axle nut loose with the torque wrench

  13. Lafue108 says:

    No way, and I like how your balljoint magically separated by just removing the castle nut. Too funny and misleading.

  14. Lafue108 says:

    @nruzicka2006 actually since thats the most difficult part of the job, yes.

  15. greengroove1 says:

    HOw did you take the seal out? just wedge a screwdriver in between it and pop it out?

  16. nruzicka2006 says:

    i put a flat edge screwdriver behind it, but be careful not to just pry it out because there is a bearing right behind it that you can damage very easily…. when you put the screw driver behind the seal, push the handle away from you do not pull the handle towards you because that will put
    pressure on the bearing that is behind the seal