Harken recently (in the last few years) changed all their hardware and made older systems like yours obsolete. They, however, do have parts for older systems, but do not advertise them or list them in their current calendar. Since they do not sell to the public, you can go to your favorite local Chandlery and give them the info on your system. I assume you have the midrange track. The local marine store can try to identify your product and then call Harken for a part number and order it for you.