Product review (5 stars): Worth the effort,
Exceeded my expectations.  Great replacement part at an affordable price.  Definitely allow yourself a lot of time.  Follow other reviewer suggestions for installation. Having an extra set or two of hands is extremely helpful to get the gasket into place.  Well worth the effort.  Once installed commit to keeping it dried off completely between uses.  Better to prevent the nasty impossible to remove mold then to replace the bellow on a regular basis.