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Pinion Seal
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cdstl
Posted 2022-07-03 4:46 PM (#622568)
Subject: Pinion Seal



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Posts: 73
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Hey guys, I was in the process of changing seals when I found out that I had the wrong pinion seal. The numbers on the one in the car are 663602. I'm in the process of searching on the internet a bit so I thought that I'd ask you guys if you had a part number.

Thanks
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StillOutThere
Posted 2022-07-03 5:10 PM (#622569 - in reply to #622568)
Subject: Re: Pinion Seal



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Location: Under the X in Texas
And the exact year make and model IS.........................
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cdstl
Posted 2022-07-03 5:24 PM (#622570 - in reply to #622569)
Subject: Re: Pinion Seal



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Posts: 73
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'56 Plymouth Savoy, I suppose that may help.

Thanks
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56D500boy
Posted 2022-07-03 5:46 PM (#622573 - in reply to #622568)
Subject: RE: Pinion Seal



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cdstl - 2022-07-03 1:46 PM
Hey guys, I was in the process of changing seals when I found out that I had the wrong pinion seal. The numbers on the one in the car are 663602. I'm in the process of searching on the internet a bit so I thought that I'd ask you guys if you had a part number.


663 602 = the pinion seal for the 55-57 8.25" rear diffs. Replacement is SKF 18880 or National 7216

Tony - 2019-06-18 4:58 PM
I just compared the measurements for National 7216 and SKF 18880, the measurements are identical except that the 7216 still uses leather instead of rubber.






REFERENCE: http://www.forwardlook.net/forums/forums/thread-view.asp?tid=71584&...







(55-57RearDiffPinionSealPN663602.jpg)



(663602PinionSealSearchAtRockAutoResults.jpg)



Attachments
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Attachments 55-57RearDiffPinionSealPN663602.jpg (145KB - 83 downloads)
Attachments 663602PinionSealSearchAtRockAutoResults.jpg (85KB - 95 downloads)
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cdstl
Posted 2022-07-03 7:43 PM (#622576 - in reply to #622573)
Subject: RE: Pinion Seal



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Posts: 73
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Yeah, your 7216 fit just fine, the 7216 that I have is way too small. The pinion takes a 3.14 "and the 7216 that I have is just over 2.5"

Thanks for the information, I have an SKF 18880 on the way.

Edited by cdstl 2022-07-03 7:57 PM
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