20.20 Dec 16, 2025
ISO
ISO/TC 22/SC 32
International Standard
This document specifies the test methods and requirements for the mechanical and electrical performance of spark-plugs for use with spark ignition engines.
PUBLISHED
ISO 11565:2024
IN_DEVELOPMENT
ISO/WD 11565
20.20
Working draft (WD) study initiated
Dec 16, 2025