Transfer case rear seal part nr?

Dan_gearhead · Aug 6, 2024

The rear seal on my 1989 k2500 350 is leaking...just wanted to check if someone has the part nr because I am having a hard time finding the correct one here in Sweden...thanks.

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Dan_gearhead · Aug 6, 2024

Maybe it is called the extension housing..? It is the seal where the driveshaft is.

evilunclegrimace · Aug 6, 2024

Dan_gearhead said:
Maybe it is called the extension housing..? It is the seal where the driveshaft is.

What T case do you have?

evilunclegrimace · Aug 6, 2024

SKF 18860 is the long rubber seal
SKF 19015A is the short seal that is similar to your pic
SKF18998 is another short style seal that has a boretite flexible coating on the seal

evilunclegrimace said:
What T case do you have?

Never mind both cases take the same seal

GoToGuy · Aug 6, 2024

The tail housing to case gasket 4 bolt attach, or the slip yoke end case seal drive shaft?

Dan_gearhead · Aug 9, 2024

Thanx..got it sorted

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old.

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New.

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Happy passenger

Schurkey · Aug 10, 2024

Yeah, you replaced the seal...but I don't think that was your leak. Leaks tend to flow downhill, and rearward. If that seal was leaking, the driveshaft would be slimy.

Look farther forward. That's where the slime is.

Dan_gearhead · Aug 13, 2024

Schurkey said:
Yeah, you replaced the seal...but I don't think that was your leak. Leaks tend to flow downhill, and rearward. If that seal was leaking, the driveshaft would be slimy.

Look farther forward. That's where the slime is.

I see what you mean but it has stopped leaking now so it was the seal.

Laredo · Sep 12, 2024

For the record, there is no gasket between the transfer case half and the output shaft housing. It's sealed with RTV silicone or other suitable sealant.

Schurkey · Sep 12, 2024

Laredo said:
For the record, there is no gasket between the transfer case half and the output shaft housing. It's sealed with RTV silicone or other suitable sealant.

I'd expect anaerobic sealer such as Loctite 518. I'm too lazy to check the service manual for confirmation.

Transfer case rear seal part nr?

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