# This Diesel Engine Is The Oldest One Still In Production Today

> Launched in 1984, the Cummins B-Series is the longest-running diesel engine family that is still being produced today.

- **Source:** [SlashGear](https://www.slashgear.com/1984677/oldest-diesel-engine-in-production-today-cummins-b-series/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=68e40d2fe1335d10a85872ab)
- **Published:** 2025-10-06
- **Category:** Cars
- **Tags:** #diesel #engine #oldest #production #became #being #breakdowns #built
- **Canonical:** http://localhost:4321/a/68e40d2fe1335d10a85872ab

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_GearOpen's distilled summary. The full original article is published at SlashGear (source link above); GearOpen does not republish the source's full text._