# ISO 6550:1989 — Withdrawn and superseded ISO standards

For ISO 6550:1989, item title is Road vehicles — M12 x 1,25 and M14 x 1,25 sheath-type glow-plugs with conical seating and their cylinder head housing; status code is 9599; successor is ISO 6550-1:1994 | ISO/WD 6550 | ISO 6550-2:1994; withdrawn / published date is 1989-11-02, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6550:1989 _(verified: appears in the quote below)_
- **Item title:** Road vehicles — M12 x 1,25 and M14 x 1,25 sheath-type glow-plugs with conical seating and their cylinder head housing _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6550-1:1994 | ISO/WD 6550 | ISO 6550-2:1994
- **Withdrawn / published date:** 1989-11-02 _(verified: appears in the quote below)_

## What the source says

> 12946,IS,,ISO 6550:1989,"Road vehicles — M12 x 1,25 and M14 x 1,25 sheath-type glow-plugs with conical seating and their cylinder head housing","Véhicules routiers — Bougies de préchauffage M12 x 1,25 et M14 x 1,25 du type à fourreau et à siège conique et leur logement dans la culasse",1989-11-02,2,['43.060.50'],ISO/TC 22,9599,[12945],"[20089,12947,20090]","['en','fr']",3,

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).