While I could have hunted around and bought everything separately, I pulled the trigger and clicked to order button. Everything I needed showed up effortlessly in one box. Also, PYI included new set screws for the grease holes. I really appreciated that, as fresh set screws were a little thing that made the job finish nicely. I'll feel confident sending a diver under the boat next year to do the lube job, knowing that he won't have to fight the set screws.