Trim cylinder o rings?

Question

does any one know the size of the quad ring on a trim cylinder, part number 41170

Answer 1

What is a trim cylinder?

What year make model is the quad? I can find out with more info.

Answer 2

You might want to check with "iboats.com" as they are great with technical boat questions.  Go to the forum on motor questions and ask them.. They were a great help for me when I had troubles with a non starting 150 hp Merc OB; including getting the trim cylinders to work again.  Goods luck.