Parts such as the E-4 Cam Chain - Tensioner: Chain,cam, Collar,6x14.7, Washer Seal, 6mm, Ten,comp,camchain are included in the Xl500s 1980 (a) Belgium E-4 Cam Chain - Tensioner parts fiche.
Of all the components that make up this E-4 Cam Chain - Tensioner the Washer Seal, 6mm has the lowest price.
Of all the components used in this assembly the Chain,cam is the most expensive.