Division 4.4.4 Other requirements

The requirements of paragraphs 5.2.3, 5.3, 5.4 and 5.5 of UN/ECE Regulation 103 shall apply to replacement periodically regenerating systems. In these paragraphs the words ‘catalytic converter’ shall be understood to mean ‘periodically regenerating system’. In addition the exceptions made to these paragraphs in section 4.1 of this annex shall also apply to periodically regenerating systems.