3YM20 Marine
Yanmar 3YM20 · 3YM family — specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.
The Yanmar 3YM20 is a Yanmar marine diesel in the 3YM20 family. Yanmar designs and sells both marine and industrial diesels; internal service parts for this family are listed in the 3YM20 parts book and often sell cheaper through industrial/agricultural channels than under marine dealer pricing. — Yanmar OEM parts catalog in-repo (brands/yanmar/data/extracted/catalogs.csv)
max 21mhp@3600 / cont @3489 (Yanmar 3YM20 datasheet)
A ✓ means at least one cheaper channel — aftermarket, the tractor/industrial base engine, or a standard component — exists for this engine in that category.
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- Category
- Marine
- Engine family
- 3YM
- Year range (approx)
- from 2004
- Cylinders
- 3
- Rated output
- 21 hp (15.4 kW)
- Bore × stroke
- 70 × 74 mm
- Displacement
- 854 cc
- Max rpm
- 3600
- Continuous rpm
- 3489
- Aspiration
- Naturally aspirated