Aluminum Propeller AMITA3 14.5X19 Left Hand 2512-145-19

Function and Technical Context

In any marine propulsion installation, the propeller is the element that converts the rotating mechanical energy of the shaft into hydrodynamic thrust, directly determining cruise speed, fuel consumption efficiency, and acceleration response. This three-blade aluminum unit, with a diameter of 14.5 inches and a pitch of 19 inches, is specifically designed for left-hand shaft rotation (counter-clockwise direction), a configuration typical of OMC engines in dual-propeller installations or in the port position. The AMITA3 series profile optimizes the balance between low-speed traction and cruise-regime performance, while also minimizing cavitation tendency under demanding navigation conditions. A damaged propeller not only reduces propulsive performance: the dynamic imbalance generated by damaged blades is transmitted to the shaft, accelerating wear on the bearings, seals, and the water pump impeller, which can result in repairs with costs far exceeding that of the propeller itself.

When to Replace This Part?

The clearest signs that the propeller requires replacement are: noticeable loss of maximum speed with the engine in good condition, increased engine RPM without proportional vessel response (symptom of excessive slip or sustained cavitation), abnormal vibrations perceptible at the rudder or hull at certain RPMs, and visible blade damage such as cuts, bends, cavitation erosion, or deformation following impact with a submerged object. Unlike consumables with fixed service intervals, an aluminum propeller should be visually inspected at the start of each season and always after any impact or grounding, also checking the condition of the hub and shear pin. Professional advice is not to delay replacement: operating with a defective propeller or improper pitch compromises vessel safety and can damage the shaft seals, turning a simple repair into a costly haul-out operation.

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