I am sure this will be more of a review for some of you, but it never hurts to hear it twice. Getting anything mounted adequately with the proper hardware is key to making it fit properly. The assembly it interacts with lasts a long time. This is even more critical when it comes to engine components. A slight or minor leak that lets even a fraction of air into the system can cause, at the very least, a loss in performance but more likely will prevent it from running altogether. The Harley Davidson Carburetor Mounting Gasket is no exception.Every mechanic who is worth their weight in salt knows we are talking about a golf cart gasket or seal at this point, and in this case, they would be correct. The aftermarket carburetor mounting gasket is critical to making the carburetor and insulator like one unit. It measures approximately 1 7/8-inches between the center of the mounting holes. This gasket will work for 1963-1981 Harley Davidson models, so do not hesitate, get one coming to you now!