If the plated and anodized finish's on the various throttle-body and injector fittings are looking a little tired, then new screws and plated parts will also improve the overall appearance; this can be carried out at the same time as a general refurb or service.
Other related parts you may wish to consider:
Why not service and restore the appearance of the throttle-body and injector assemblies at the same time? Add as many items as you wish to the same shopping cart, A new bolt 1756850F00 and gasket 0916806023 for example, and still only pay the same single fixed price shipping cost. This component may have other applications within the Suzuki model range.