These are the parts most often reused when they should be replaced. A caliper bolt, an exhaust gasket or a plastic retainer that has gone brittle will cause a comeback even when the main component was fitted correctly.
Listings state the thread, the diameter and the quantity in the pack wherever the supplier provides it, because buying one clip when the job needs six is the usual mistake.
Seals and gaskets are listed by the component they seal rather than by material, so searching for the part you are fitting will surface the matching gasket.
