Seal Help!
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Senior User
Joined: Aug 2006
Posts: 387
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From: Ballston Spa, NY
Seal Help!
Ok so i rebuilt my NP435 and also tore down the Dana 21 a little and put new seals back in. Now with the weekend fast approaching I need to get this done asap. I have a 1974 F150 360 NP435 Dana 21 4x4. I am getting ready to put the 4x4 extension housing back in but I cannot find a replacement seal for the Extension housing anywhere. I have talked to Napa, Spent lots of time with Bronoc graveyard. I cannot find this seal anywhere. It is the seal that seperates the transmission oil and transfer case oil. It rides on the Input shaft to the Dana 21. The spud shaft has 16 splines that go into the transfer case. Attached are some pictures. Measurements i have for it, By a tape measure are:
OD: 2 11/32" (2.34375")
ID: 1 15/32" ( 1.46875")
Width: 5/8" (.625")
Any help would be much appreciated. I need this seal ASAP.
OD: 2 11/32" (2.34375")
ID: 1 15/32" ( 1.46875")
Width: 5/8" (.625")
Any help would be much appreciated. I need this seal ASAP.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Take the seal to a bearing supply house. They should be able to match it up with another seal.
Also, quite often there is a part number molded into the seal itself that can be crossed over to a supplier number that they carry.
Also, quite often there is a part number molded into the seal itself that can be crossed over to a supplier number that they carry.
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Aug 12, 2019 08:42 AM
