The Bolt(53l) is the lowest priced item on this Oil Tank schematic.
Parts such as the Oil Tank: Grommet(1jk), Bolt(53l), Tank, Recovery, Clip 101235600 are included in the Tzr125 1987 2rk England 272rk-310e1 Oil Tank parts fiche.
The Oil Tank is made up of components including this Tank, Oil which is the most expensive.