MULTI-D PROPELLER ALUM.AMITA4 13.3X13 RIGHT

Function and technical context

The Amita 4 aluminum propeller with a diameter of 13.3 inches and pitch 13 is part of the boat's propulsion system, being the component responsible for converting the power of the outboard or inboard engine into effective thrust on the water. With four blades and Multi-D geometry, this propeller optimizes swept surface and reduces cavitation compared to designs with fewer blades, resulting in more progressive acceleration and solid performance in both cruising speed and departure maneuvers. Clockwise rotation determines its mounting on standard rotation motors, so it is essential to verify the direction of rotation of the shaft before proceeding with installation. An incorrect adjustment of the pitch or diameter causes the engine to work outside its optimal RPM band, with consequent loss of performance and increased wear on the propeller.

When to replace this part?

The most common symptoms that indicate that the propeller must be checked or changed are: abnormal vibrations in the tail shaft, loss of top speed or traction when exiting plane, and increased fuel consumption without apparent cause in the engine. Aluminum blades are susceptible to deformation and denting after impact with submerged objects, which alters dynamic balance and can transmit damaging stresses to the propeller shaft and seal. It is recommended that the propeller be visually inspected at each seasonal maintenance and replaced as soon as structural damage to the blades is detected, as continuing to sail with a damaged propeller can lead to costly gearbox or hub failures.

Compatibility table

Equivalent manufacturer part numbers