It’s what makes a 4x4, well, a 4x4. It’s one of those critical components that most people rarely give a second thought to until they have a problem with it. Hands down, your vehicle’s transfer case ...
Where would the hard-core off-road community be without the auxiliary transmission known as a transfer case? Probably buried axle deep in sand or mud, that's where. And, what about rockcrawling? Ha!