Oil Seal
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National Oil Seal

Part No. 5778 Warranty Details  

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Designed to provide enhanced endurance and maximum contamination exclusion while ensuring proper fit, form and function.
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Inside Diameter:3.16 in
Lip Material:Acrylates
Outside Diameter:3.165 in
Shaft Size:1.552 in


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NationalOil Seal

(based on 1 review)

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Reviewed by 1 customer

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(1 of 4 customers found this review helpful)


I highly recommend this seal


from Fairmont, WV

About Me Truck Enthusiast

Verified Buyer


  • Durable
  • Easy To Install


    Best Uses

    • Replacement

    Comments about National Oil Seal:

    Good quality seal. Very easy to install.

    Displaying review 1

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    Do you have questions about this product?


    Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

    3 Questions | 3 Answers
    Displaying questions 1-3
    • Q:

      98 jeep cherokee 4wd , is this the pinion seal that leads out toward the driveshaft? d30 front end. thanks in advance
      Asked on 6/26/2016 by eca from fort worth tx

      1 answer



        Hi ECA, happy to help you! This National Oil Seal (Part No. 5778) is an exact front outer differential pinion seal ( leads out toward the driveshaft) for your 1998 Jeep Cherokee 4WD.

        Answered on 6/27/2016 by Steve from AAP
    • Q:

      Is this the correct seal for my 1950 ford 3 speed trans. goes in the back end of the tail shaft where drive shaft end slides into trans. ? Thanks !
      Asked on 1/9/2016 by J. J. from McCalla , Alabama

      1 answer



        Hi J.J, glad to help you! To further assist with the part number 5778, please provide us the model and engine size of your 1950 Ford.

        Answered on 1/11/2016 by Steve from AAP
    • Q:

      is this the proper seal for a jeep Cherokee with a D30 front end?
      Asked on 5/24/2015 by niko

      1 answer



        Hi Niko, I'm glad to assist you! This National Oil Seal (Part No. 5778) fits most of the models in Jeep Cherokee. Please provide your vehicle make year and engine size so that I can provide the accurate information for you.

        Answered on 5/24/2015 by Steve from AAP
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