This Order applies Part III, Schedule 4 Item 50 of the Customs Tariff Act 1995 to specified diesel engine particulate filter parts classified at tariff code 8421.99.00, effective 1 January 2010 until revoked (made under s269P; revocation under ss269SC/269SD). It was signed by a delegate of the Chief Executive Officer. Mechanically, it changes the tariff treatment for importers of those parts, thereby altering their duty liability and the Commonwealth's customs revenue and related compliance obligations.