When it's made in Japan, you can expect considerable sharing at times within industries.
For example, Fuji Heavy Industries which has made many of the engines used by Polaris over the years utilizes pistons with the trademark "Robin" on them. Robin also supplies engine parts to Suzuki Automotive. Of course a branch of Suzuki has also built engines for Arctic Cat. So in a sense, though Polaris and Arctic Cat parted ways many years ago, they are still connected somehow.
Some Honda outboards used a lower unit built by Mercury. Some of the old Mariners were built by Mercury - while other were built by Yamaha, and even had the Yamaha tuning forks on the engine block castings.
