# Why Does Harley-Davidson's Milwaukee-Eight Engine Have Four Spark Plugs?

> As arguably the most recognizable motorcycle brand in the world, Harley-Davidson is consistently at the forefront of innovative engineering.

- **Source:** [SlashGear](https://www.slashgear.com/2125638/harley-davidson-milwaukee-eight-engine-spark-plugs/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=69c0388fc93ca5025f220ddb)
- **Published:** 2026-03-22
- **Category:** Cars
- **Tags:** #harley-davidson #eight #engine #four #milwaukee #plugs #spark #does
- **Canonical:** http://localhost:4321/a/69c0388fc93ca5025f220ddb

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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._