82 documented fitments · 80 hp · 3200 rpm
Propeller for the Yanmar 4JH80.
We've documented 82 propeller installations behind this engine — the ratios, drives and sizes below are what the fleet actually runs.
Rated power
80 hp
Max RPM
3200
Common ratios
2.49:1 · 2.23:1 · 2.63:1 · 2.7:1
Drive split
31 shaft · 51 saildrive
Documented propeller families
The fleet
Boats we've propped with the 4JH80
- Fountaine Pajot Saba 50×9
- Lagoon 51×4
- Leopard 50×4
- Jeanneau SO490×3
- Bali 5.4×2
- Bavaria 50×2
- Beneteau Oceanis 51.1×2
- Bestevaer B53×2
- Lagoon 52×2
- St Francis 50×2
- St Francis 50-02×2
- St Francis 50-03×2
- Voyage 590×2
- Bavaria 45C×1
4JH80 propeller questions
What size propeller suits a Yanmar 4JH80?
It depends on the gearbox ratio behind it (documented installations most often run 2.49:1, 2.23:1, 2.63:1) and the boat it pushes. Power and max RPM set the optimum diameter; the ratio converts engine speed to shaft speed. The Builder runs the numbers and an engineer verifies.
Which propeller family do Yanmar 4JH80 owners fit?
Documented Yanmar 4JH80 installations run Autoprop H5, Autoprop H6, Varifold 3-blade — the split follows boat type and usage rather than the engine itself.
Does the Yanmar 4JH80 come in shaft and saildrive versions?
Both are documented: 31 shaft and 51 saildrive installations. The propeller differs (hub vs spline fitting) so tell us which yours is.
Running a Yanmar 4JH80?
Two minutes in the Builder — engine pre-filled, gearbox ratio checked against the fleet, verified by an engineer within one business day.