ISO 22977:2005 specifies characteristics of M12 x 1,25 spark-plugs with flat seating and 14 mm bi-hexagon and of their cylinder head housings, for use with spark-ignition engines.
Status : WithdrawnPublication date : 2005-07
Edition : 1Number of pages : 7
Technical Committee:Electrical and electronic components and general system aspects
A standard is reviewed every 5 years
Revisions / Corrigenda