Oil Seal
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National Oil Seal

Part No. 3604 Warranty Details  

See if this part fits a specific vehicle.

Check Vehicle Fit

Designed to provide enhanced endurance and maximum contamination exclusion while ensuring proper fit, form and function.
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Lip Material:Fluoroelastomers
Material:Fluoroelastomers

REVIEW SNAPSHOT®

by PowerReviews
NationalOil Seal
 
3.3

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

60%

of respondents would recommend this to a friend.

Reviewed by 7 customers

Displaying reviews 1-7

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2.0

On the Fence

By 

from undisclosed

Verified Buyer

Comments about National Oil Seal:

Just replaced this after 60,000 miles. The factory seal last 30,000 and totaly gave out. So just installed 3rd seal in 90,000 miles and ten years. Im thinking the pinion shaft may be to blame.

 
4.0

Fixed my leaky rear differential

By 

from undisclosed

Verified Buyer

Comments about National Oil Seal:

Fixed my leaky rear differential

 
5.0

Worked fine.

By 

from St. Louis

Verified Buyer

Comments about National Oil Seal:

Installed on a '02 F150. Stopped pinion leak on differential. Was half the price of the Ford seal. Seat appeared well constructed

 
5.0

best

By 

from 32258

About Me Auto Enthusiast

Verified Buyer

Pros

  • Durable

Cons

    Best Uses

    • Everyday Driving

    Comments about National Oil Seal:

    11

     
    1.0

    Don't Buy

    By 

    from PA

    About Me Mechanic

    Pros

      Cons

      • Does Not Work

      Best Uses

        Comments about National Oil Seal:

        Do not purchase. It will leak! Go to a Ford dealer and purchase a genuine Motorcraft replacement by using tour vehicle's VIN to ensure a proper fit. Buying the right part for a few dollars more will save you time and fluid.

        (4 of 8 customers found this review helpful)

         
        1.0

        It Leaked

        By 

        from Buffalo NY

        About Me Auto Enthusiast

        See all my reviews

        Ask me a question

        3 or more reviews submitted

        Pros

        • Cheap

        Cons

          Best Uses

            Comments about National Oil Seal:

            After about 50 miles of driving it leaked. This seal was different then the one I took off (after 130,000 miles). The original had an extra grove in it and the flange had a ridge that fit into the grove.

            (6 of 9 customers found this review helpful)

             
            5.0

            Perfect fit, 05 F150, 4.6L 4x4 Pinion

            By 

            from Mid Ga

            About Me Mechanic

            See all my reviews

            Ask me a question

            3 or more reviews submitted

            Pros

            • Durable
            • Easy To Install
            • Lightweight

            Cons

              Best Uses

              • Everyday Driving
              • Performance Driving
              • Replacement
              • Restoration

              Comments about National Oil Seal:

              05 F150, 4.6L 4x4, 8.8 Rear End, Pinion Seal
              This was a high quality seal.
              It is easy to tap in because on the metal ring on the outside of the seal.
              Fit perfectly!

              Displaying reviews 1-7

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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.

              1 Question | 2 Answers
              Displaying question 1
              • Q:

                IS THIS THE SEAL FOR WHERE THE DRIVESHAFT MEETS THE YOKE IN THE REAREND ?
                Asked on 4/9/2010 by Anonymous

                2 answers

                • CUSTOMER CARE

                  A:

                  No. This is a pinion seal.

                  Answered on 5/11/2010 by Kevin from AAP
                • A:

                  I think he means YES. This fits behind the yoke in the front of the differential housing. Another name for it is the pinion seal.

                  Answered on 12/5/2010 by Smitty from MA
              Displaying question 1

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