This is a fuel tap diaphragm for a Suzuki GT750J. I haven't put the part into service yet, but can say that it fits well. The part required sending an exchange part to Volker, and then waiting for the rebuilt part to arrive. Considering that I live in Canada it was necessary to incorporate postage time into the equation. Volker's turnaround time was very quick. I'd be happy to do business with him again.