- Edited
I've done the S70 wiper conversion on my 850R, well worth doing, I didn't like the open hole where the nut is so worked out the VW cap & O ring solution as Skandix say the cap is no longer ger available but FCP have them as a clearance item on sale.
The plastic sleeve on the wiper shaft that your after is also NLA.
The only way you'll be able to replace those sleeves is to have them machined up from a bar of black superpro poly or rubber.