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Old Jun 6, 2024 | 01:38 PM
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Chuxter's Avatar
Chuxter
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1970 Cutlass Supreme
 
Joined: Mar 2013
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From: Saint Joseph Mo
transmission leaking
Where do I find the O ring to seal the yoke on the output shaft on a TH400 transmission?
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Old Jun 6, 2024 | 03:29 PM
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matt69olds
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From: central Indiana
It’s included with every paper and rubber kit. I would think any transmission shop would be able to help with one.
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Old Jun 7, 2024 | 04:46 AM
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joe_padavano
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Posts: 50,791
From: Northern VA
Or...

Type th400 output shaft o-ring into Google

https://www.classictransmissionsolut...sion-set-of-2/
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Old Jun 7, 2024 | 07:16 PM
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Chuxter's Avatar
Chuxter
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1970 Cutlass Supreme
 
Joined: Mar 2013
Posts: 393
From: Saint Joseph Mo
I saw those. Was hoping to find something local if I knew the size.
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Old Jun 7, 2024 | 09:00 PM
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OLDSter Ralph's Avatar
OLDSter Ralph
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From: St. Paul Minnesota
Try your local transmission shop.
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Old Jun 8, 2024 | 04:43 AM
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66_Jetstar
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17 bucks for a dollar's worth of o-rings is nuts. Go to any trans shop and they'll probably give them to you.
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Old Jun 8, 2024 | 05:00 AM
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Chuxter's Avatar
Chuxter
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1970 Cutlass Supreme
 
Joined: Mar 2013
Posts: 393
From: Saint Joseph Mo
Originally Posted by 66_Jetstar
17 bucks for a dollar's worth of o-rings is nuts. Go to any trans shop and they'll probably give them to you.
plus another 4 dollars to put them in an envelope and mail them to you.
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