ISO INTERNATIONAL STANDARD 28741 Third edition 2023-08 Road vehicles - Spark-plugs and their cylinder head housings Basic characteristics and dimensions vehicules routiers - Bougies d'allumage et leur logement dans la culasse - Caractéristiques élémentaires et dimensions Reference number IS0 28741:2023(E) osi IS02023 IS0 28741:2023(E) COPYRIGHT PROTECTED DOCUMENT @ISO2023 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on or ISo's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2023 - All rights reserved