That's an ALH tee. O-rings for the A3/B4 are on the filter, not the tee. Not interchangeable.
The main differences are that on the ALH engine the T rests at the bottom of the T- opening...
While the earlier one was the same setup that has been used going all the way back to 88-89 model years. It has a post sticking up from the filter head that the older style T slid down onto the post....
Over the years I installed this setup on Golf & Jetta cars from before which did not have the preheat valve. the first car I ever put it on was an 85 Jetta TD....
Adapting the car the newer setup is pretty easy, purchase a newer style T valve, install it in the return line, then put the newer style filter in....
From my recent searches today the ALH style filter are cheap and is really easy to get so would be a good upgrade that will save you headaches later....