i've been dealing with a stinky cabin whenever i open the windows and knew that my rear hatch seal was in bad shape. i actually have a new oem seal, but since it's a glue-on part, i'm waiting until i do the bodywork and re-paint the car to install it. in the meantime, i decided to order the kia seal as an interim solution.
i poked around online and found one for $35 from korea. it took a couple weeks to arrive, but i was in no hurry. it installed pretty easily and one door seal did the job nicely - about 1 1/2" needed to be cut out. a little searching and you could find the factory end splice and i cut it there with a utility knife.
it works well and the hatch closes much more easily now. i still get a little bit of stink in the cabin with the window down, but much less. not sure where my other leaks are - will have to do a test with a smoke machine to find 'em.
the kia seal is super easy to install, but it did bump into my interior plastic panels in a couple of places, which makes the fit a little wonky, but it does the job fine for the price.
comparison of oem to kia profile
my old seal was falling apart
press it on, trim the ends and done