Main Bearing Set
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Sealed Power Main Bearing Set

Part No. 4663MA Warranty Details  
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Federal-Mogul's innovative Sealed Power "A-series" boredĀ aluminum bearings are ultramodern bimetalĀ bearings that offer increased wear resistance.
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O.E.M. Replacement:Yes
Package Quantity:5


by PowerReviews
Sealed PowerMain Bearing Set

(based on 1 review)

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Reviewed by 1 customer

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(7 of 13 customers found this review helpful)


Good Stuff


from Lincoln, NE

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3 or more reviews submitted


  • Easy To Install


    Best Uses

    • Everyday Driving
    • Performance Driving
    • Replacement
    • Restoration

    Comments about Sealed Power Main Bearing Set:


    • Car & Truck:
    • Auto Enthusiast, Mechanic, Truck Enthusiast

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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.

    2 Questions | 2 Answers
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    • Q:

      Is #4663MA (standard) a direct fit for my 2005 Chevrolet Tahoe with a 4.8 L. V8?
      Asked on 11/24/2016 by Dennis from Cathedral City, California, 92234

      1 answer



        Hi Dennis, glad to help you! This Sealed Power Main Bearing Set (Part No. 4663MA) does not fit your 2005 Chevrolet Tahoe V8 4.8L. We do have an exact fit Main Bearing Set available online for your vehicle and the part number is 7298MA, with standard size. Please enter your vehicle on our website and search for this part to check the fitment.

        Answered on 11/24/2016 by Solomon from AAP
    • Q:

      Hi, what are the differences between part #s 4663m and 4663ma. I realize one is aluminium. Which is better for a stock to slightly modified engine?
      Asked on 3/14/2012 by Anonymous

      1 answer



        This Sealed Power Main Bearing Set (Part No. 4663MA) is direct replacement bearing and it is made of Tri metal copper-lead alloy and this Sealed Power Main Bearing Set (Part No. 4663M) is preformance bearing and it is made of Bi metal aluminum alloy, A-Series.

        Answered on 3/16/2012 by Dennis from AAP
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