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
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Catalytic converter guidance updated and guidance on diesel particulate filters added.
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First published.