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Old 03-19-2020, 12:49 AM   #4305
sshamu
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Join Date: Aug 2016
Location: phoenix, az
Posts: 16
Re: What did you do with your truck today, SM420 seal

The rear transmission seal on my 4 speed SM420 has bee weeping the past few weeks so I decided to get busy and eliminate it. I hit up O'reilly's for their Fel-Pro TS 5100 gasket set. I wasn't sure of the rear seal number so I ordered my seal from Jim Carter Truck parts. The CR Seals number is CR 22340.

My yoke had some slight wear from the old seal so I had it polished and my favorite driveline shop. Now that you know the gasket set # and seal hopefully this helps someone out.
Cheers, Chuck
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'59 Apache Fleetside, 3100 w/235, all stock, 15 inch rims
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