For 1997 model
19 22W−23153−L0 ..RING, SNAP 2 needed May be reused.
20 22W−23145−L0 ..OIL SEAL 2 needed This is the actual oil seal.
21 51Y−23125−00 ..METAL, SLIDE 2 needed Wear item, smart to replace if worn.
22 54G−23144−00 ..SEAL, DUST 2 needed This is the dust seal that protects the oil seal from grinding away.
The following parts are the boots on the forks. It is smart top replace them, but they usually go bad before the oil seals do, anyway. You can use generics that attach with zipties and save some money.
36 4CS−23191−20 BOOT 2 needed
37 2K5−23192−00 BAND 2 needed
38 1W4−23194−L0 SCREW, BOOT BAND 2 needed
For later models the part numbers are all the same except there is a -00 suffix added to each.
has a quick and easy parts look-up, good prices, and only charges internet buyers actual shipping costs.
Install instructions begin on page 6-12 of the shop manual and page 62 of the late model supplement, both of which you can download for free from this site. I'll leave it to others to explain how they got around spending the big bucks for Yamaha special tools as Tdub's forks have never needed work.