For any engine, if a gasket is required or if you just want one here is a very inexpensive method. If you drink coffee, go out into the kitchen and grab one of the filters . Cut out the shape required and get a tube of "Form a Gasket " from you auto supply store. Spread a VERY thin layer of the Form a Gasket on, let it tack up and put the muffler on. It has worked for me. Just a thought. Joe