# ISO 2705:1991 — Withdrawn and superseded ISO standards For ISO 2705:1991, item title is Road vehicles — M12 x 1,25 spark-plugs with flat seating and their cylinder head housing; status code is 9599; successor is ISO 2705:1999; withdrawn / published date is 1991-12-18, recorded from its source on 2026-08-05. - **Identifier:** ISO 2705:1991 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — M12 x 1,25 spark-plugs with flat seating and their cylinder head housing _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 2705:1999 - **Withdrawn / published date:** 1991-12-18 _(verified: appears in the quote below)_ ## What the source says > 7671,IS,,ISO 2705:1991,"Road vehicles — M12 x 1,25 spark-plugs with flat seating and their cylinder head housing","Véhicules routiers — Bougies d'allumage M12 x 1,25 à siège plat et leur logement dans la culasse",1991-12-18,4,['43.060.50'],ISO/TC 22,9599,[7670],[28663],"['en','fr']",4, ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).