Volvo XC90 Gearbox & Transmission Problems

On paper, yes. Both variants use the Aisin AWTF-80 six-speed automatic transmission. But whether they’re interchangeable or not is a bit more complicated to answer. You may find there are detail differences such as where the sensors are mounted and perhaps the bolt pattern itself. And there could also be differences in the specification of the torque converter in each case.

A transmission specialist dealing with these makes and models might be able to give you a clearer idea of interchangeability, but fundamentally, yes, they’re the same transmission.

It’s a sign of the times, carmakers are not supporting their products the way they once did and more and more owners are finding themselves stuck as you are. It seems we’re now meant to sell our cars before they get to the point of needing major surgery. You could try sourcing the bearings from overseas via the Internet, or you could also try and find a second hand diff that has serviceable bearings and for that as a unit.