What does it cover?
UN R103 covers approval as separate technical units of replacement pollution control devices for vehicles within the related R83 scope. Catalytic converters and particulate filters are included. Product type, intended vehicles and emissions performance are read together.
Who is it for?
For vehicle and retrofit system manufacturers, converters and technical teams preparing modification files.
Which subjects are addressed?
- Replacement catalysts and particulate filters
- Separate technical unit approval
- Vehicle applications and emissions tests
Common question
Does R103 cover filters fitted to every engine?
No. Its scope is tied to vehicles covered by the relevant R83 version and to replacement pollution control devices. Not every filter follows the same approval scope.
Published RegsUP edition
This page is tied to the published RegsUP working edition below; it is not an official consolidated text.
RegsUP record title: R103 — UN Regulation No. 103
Working series: 00 · Included supplement: 4
RegsUP edition publication date:
This is the RegsUP publication decision date, not the date the regulation entered into force.