125 documented fitments · 57 hp · 3000 rpm
Propeller for the Yanmar 4JH57.
We've documented 125 propeller installations behind this engine — the ratios, drives and sizes below are what the fleet actually runs.
Rated power
57 hp
Max RPM
3000
Common ratios
2.23:1 · 2.49:1 · 2.63:1 · 2.14:1
Drive split
20 shaft · 105 saildrive
Documented propeller families
The fleet
Boats we've propped with the 4JH57
- Knysna 500 Catamaran×16
- Lagoon 450×10
- St Francis 50×10
- Bavaria C42×6
- Bestevaer 45×6
- Knysna 500 Catamaran #95×6
- Lagoon 42×5
- Lagoon 46×5
- Knysna 500 Catamaran #101×4
- Knysna 500 Catamaran #100×3
- Knysna 500 Catamaran #98×3
- Bavaria C46×2
- Beneteau Oceanis 41.1×2
- Catalina 425×2
4JH57 propeller questions
What size propeller suits a Yanmar 4JH57?
It depends on the gearbox ratio behind it (documented installations most often run 2.23:1, 2.49:1, 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 4JH57 owners fit?
Documented Yanmar 4JH57 installations run Autoprop H5, Varifold 3-blade, Autoprop H6 — the split follows boat type and usage rather than the engine itself.
Does the Yanmar 4JH57 come in shaft and saildrive versions?
Both are documented: 20 shaft and 105 saildrive installations. The propeller differs (hub vs spline fitting) so tell us which yours is.
Running a Yanmar 4JH57?
Two minutes in the Builder — engine pre-filled, gearbox ratio checked against the fleet, verified by an engineer within one business day.