Parts such as the Water Pump: Gasket,w-pump Cov, O-ring 32.95x2.62, Cover,water Pump, Bolt,flange 6x45 are included in the Xl600v Transalp 1988 (j) Germany / 27p Water Pump parts fiche.
The component with the lowest price in the WATER PUMP schematic is the Bolt,flange,6x25.
This Pump Comp.,water is the most expensive of the items that make up this Water Pump assembly.