Guidance

Catalytic converters and diesel particulate filters

The rules that apply to the manufacture, sale and fitting of catalytic converters and diesel particulate filters.

Documents

Details

This guidance explains the rules for catalytic converters and diesel particulate filters regarding:

  • manufacturer
  • sale
  • fitting to vehicles

Updates to this page

Published 7 June 2018
Last updated 30 May 2023 + show all updates
  1. Catalytic converter guidance updated and guidance on diesel particulate filters added.

  2. First published.

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