Quote Originally Posted by taliesin
hi,the part number for the old nut is 90179-18020, the part number for the upgraded nut and lock washer kit is 90891-10124, hope this is help full,
Part No i got are TDM tab lock washer --90215-2129
and TDM nut 90179-18667.
Ill check with Fowlers if there is a upgade for the TDM nut etc.Going by that its the last five digits that are different if that corropondes to the model not sure.
Anyhow thanks for that info Taliesin