I just went through this with a 2004 Sailfish. Checked dealer and they no longer have those blades and they said I would have to replace the arm and most likely to motor since the arm was on there for 22 years. I ended up checking a few auto part stores and Napa had a blade that fit - it is called a NAPA heavy duty blade. My wiper blade attached to the arm with a nut. The part that has the nut and bolt attachment comes off easily and attached right onto the new blade. The blades come in all sizes to fit you specific windshield assuming you have the same set as I described. A friend also told me he was able to buy an adaptor on Amazon the lets you use a variety of current blades on the market