Two entirely different drives. OMC in his vintage has a large rubber boot that attaches to the transom. Yours is a M/C and has bellows. If you have questions pm me.
7 years is pressing it. Check it well for dry rot and go from there. For a sense of insurance that you won't have any costly problems. I would replace it. It's not a big deal to do & inexpensive compared to what could happen if it does create a leak.