Aluminum Propeller AMITA3 15.30X21 Left Hand

Function and Technical Context

The three-blade profile of the AMITA3 series, with a diameter of 15.30 inches and pitch 21, converts engine torque into efficient hydraulic thrust, being the final link in the propulsion chain for high-performance outboard and inboard installations up to 225 HP. Its left-hand rotation makes it essential in counter-rotating configurations or installations requiring that specific direction of rotation; reversing the direction causes complete loss of thrust and may damage the propeller shaft. The hydrodynamic geometry of the AMITA3 series minimizes cavitation at full load and promotes progressive acceleration with optimal top speed, while reducing load on the gearbox and stern seal. A propeller with asymmetric blades, erosion damage or altered geometry transmits vibrations to the hull, overloads the shaft bearings and significantly increases fuel consumption.

When to Replace This Component?

The clearest indicators that the propeller needs replacement are: persistent vibrations transmitted to the hull during navigation, noticeable loss of top speed or sluggish acceleration response, excessive cavitation visible at the stern and erratic vessel behavior when turning. Blades with dents from impact with solid objects, bent blades or galvanic erosion compromise propulsive efficiency even if the damage appears superficial, since any asymmetry generates irregular loads on the shaft and bearing. Visual inspection of the propeller is recommended at the start of each season and after any impact; preventive replacement at the first sign of deformation avoids secondary failures in the shaft, bearing and gearbox, whose repair costs far exceed that of a new propeller.

Compatibility Chart

Note: To confirm exact compatibility with your engine, consult the manufacturer's manual or contact our technical team providing the reference SOL4512-153-21.

Equivalent Manufacturer References