Correct, oil filter cartridge with o-ring for oil filter compartment lid.
The Doo kit is just easy, imo…regardless of warranty or not.
I think around 120 ish.
comes with oil, filter and o-rings/seals for both filter and two drain plugs.
Sure could buy for less, not sure how much less, maybe 80 bucks if you piece it all out, just a guess.
But to each their own.