Axle bearings

Discussion in 'Got gears?' started by GMMADMAN, Apr 25, 2018.


    GMMADMAN Well-Known Member

    What's the best axle bearing/seal kit for my '72 Skylark 10 bolt 8.5 rear end? Thanks
  2. BrianTrick

    BrianTrick Brian Trick

    Timken SET9 and 712146
    Do NOT get the thinner 2146. Some suppliers will say its the same,but it is not.
    techg8 likes this.

    GMMADMAN Well-Known Member

    Thanks man
  4. 70skylark350

    70skylark350 Well-Known Member

    same as an 8.2 then huh Brian? are the wheel seals the same as well?
  5. Bigpig455

    Bigpig455 Fastest of the slow....

    x2 on the seal. Get the wrong one and this is the result: upload_2018-4-26_6-29-19.jpeg
  6. BrianTrick

    BrianTrick Brian Trick

    The 1970 Buick 8.2 takes the same SET9 bearing and 712146 seal.
    GMMADMAN likes this.
  7. monzaz

    monzaz Jim

    All depends - I have seen 1970 Buick 8.25 pontiac 8.2 and olds 12 bolt with 2146 seals.... Measuring is the only way to tell. I have not come up with a trail of info or plants or dates on this info...
    Just parted out a lot of rears.

    J D
  8. BrianTrick

    BrianTrick Brian Trick

    Yes,I have pulled some apart with the 2146 seals,but I will NEVER reassemble them with those. You could get away with some axle movement with the original style straight-roller bearings,but with the modern tapered-roller,you can NOT. The cone needs to remain seated in the cup. The thinner seal usually does not allow a positive seat,and therefore the cone can unseat from the cup,and you have unwanted slop,which then leads to the axle pulling up on the seal,and letting the oil leak out.
  9. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    I believe the right seals are .490" thick. The WRONG ones are .375".
  10. monzaz

    monzaz Jim

    That is why I said you have to measure the thickness needed. There were some rears where you could not use the 712146 seal it was hanging out WAY too far. Most were PONTIAC so it may not pertain to most Buick guys. Jim

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