A sample from the products for the Gasket Kit B include: Gasket,l Cover (mca), O Ring,21.5m/m, O-ring,30mm, O-ring,7.8x2.2.
This schematic depicts all components used in the Xl600v Transalp 1987 (h) Switzerland Gasket Kit B partslist.
With two applications this O-ring,14.8x2.4 is the most specified part.