New internal parts availability for the transfer case? (1991 e30ix)

[PMF19]

I'm sorting-out some issues with the all-wheel drive components of my 1991 e30ix. It feels to me that my transfer case could use some new bearings, and possible a new chain. Can anyone recommend a vendor who might sell these internal parts?

I've had pretty good luck sourcing some used axles and half-shafts, but before I put everything back on I want to ensure that each part is worth the trouble! For me, this has been a labor-intensive project.

The car has considerable mileage but looks mint; after replacing the cylinder head, the engine runs beautifully. But the all-wheel drive mechanism is badly worn out, and I'd like to bring this car "back" as fully as possible.

[richardodn]

Do you know if the viscous coupling is in good shape? Most of the internal parts are available from BMW. IIRC, replacing the chain also requires replacement of the front output gear. The best prices I've seen are through bmwmercedesparts.com however delivery is not quick.

[PMF19]

Thank you very much for the advice. I'm on it!

[bimmernaught]

those parts will add up very quickly, even more so if the vc is shot. Unless you're a real stickler for new replacement parts, i would suggest looking for a good used TC. It will be a lot less work an will save you a ton of money. A well maintained TC will last a long time.