Early models had two different sized masters, one being metric at 16mm, the other being imperial at 5/8" (15.785mm), so they are not interchangeable. I'd suggest you get out your micrometer and measure before ordering a kit. There should be a number forged under the reservoir. I chucked mine away, so can't remember the exact setup, but it was imperial and had two seals, one end had a plastic thingy on one end similar to the one you've pictured. The one cr-z1 linked to is imperial but doesn't have two seals or the plastic thingy on the end so may not work.