Kizashi Club

I'm due for mine on my 2012 SE AWD with 110,xxx miles. What parts do y'all recommend for the belt & tensioner that won't take ten years to ship?

I used a Bando brand belt. They can be sourced easily online. For the tensioner, I got an OE Suzuki part from Megazip.net. They honestly ship in reasonable time considering their warehouses are in Japan or the UAE. There are write-ups on this topic if you search the forum. A specific wrench from Harbor Freight makes the tensioner replacement much easier than otherwise: A pro tip from Old Tech.

I'm lost here. What do I pick?

Select A6B424. I know, it's confusing but for parts like the tensioner, it really does not matter because they are all the same. The codes here basically differentiate the global models vs. the Japanese Domestic Market model.
I don't really pay close attention to the difference if the part is likely not going to differ. It's never been a problem in fitment.