This Order makes certain on‑road truck parts (pipes, tubes, silencers, mufflers, exhausts) classified at 8708.92.49 subject to a Schedule 4 tariff concession (Part III item 50), effective 19 Sept 2007 until revoked. Importers of those parts receive the concession (i.e. the tariff outcome set by Schedule 4); Customs (a delegate under s.269P) decides administration and revocation (ss.269SC–269SD). Affected businesses must correctly classify imports and monitor the concession’s continuing availability.