I have a 2008 EX35 manufactured 02/2008 with a rear propeller drive shaft failure at 97 k miles. Sounds like a bad U-joint to me.
Infiniti no longer manufactures the part for that run of EX35 models (pre-04/2008), p/n 37300-1BA3A.
Also, they don't make the shaft for later cars (05/2008 - on) either which is p/n 37300-1BA8A, however Dorman makes an aftermarket replacement for that part number.
I was able to find clear photos of both online and with some careful measurements, it would appear the later part will fit the earlier car. You can see where the change was made, they eliminated a component for easier and cheaper manufacturing, but dimensionally it appears equivalent, just looks like a minor manufacturing change, not a major change.
The replacement part is about $700, so before I jumped on buying a part that might not fit, thought I would ask the collective if anyone's ever done this. Any other words of advise? We're 700 miles from home on vacation with two cats.
This is my first and last Infiniti, that's for sure.