on passenger side front of engine on bottom.
It is not a screw on oil filter, But a canister type
filter where you remove the cover and place the bare filter inside.
Always use a new gasket.
There is a screw you can remove to drain oil from filter canister
before you unscrew the canister.
Sorry I can't go look anymore as I had K900 for my 3 years and leased a new Genesis G90.
You will have to remove the bottom cover to see it. Pain in the behind.
Was easier on my 3.8 liter KIA van . the filter was on top of engine rear , driver side
under snap off engine cover