FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
In Other News . . .
You will notice a few enchancements to the forums to make your experience better. These include: Email Notifications, Thread Previews, Thread Starter Notation, and Emoji Options on the 'Like' icon. . .
Additionally, the merchant portions of the website have been updated and are now operational. . . . Check out iBoats for all your boating gear.
If you bought it from Iboats it came with the correct hub as a package deal. If you have a mercruiser alpha 1 drive and 3.0L 135 HP engine, according to your link, you would need hub #31.
Otherwise you can use the prop selector to find the right hub.
To order just the hub, you can do a product search for "hub #31" and order one.