ALUMINUM PROPELLER 9.9X12 RIGHT

Function and technical context

The 9.9 x 12 aluminum propeller is the fundamental propulsion element that transforms the power of the engine into movement of the boat through the water. Mounted on the transmission shaft, it works in the propulsion system, generating traction through the controlled rotation of its blades. This right-hand turning propeller is specifically designed for 4-stroke outboard engines, where precision of pitch and diameter are critical to optimize acceleration, maximum speed and fuel consumption. Progressive wear of the blades, cavitation or impact damage significantly reduces thrust efficiency, forcing the engine to work in an overload regime and directly affecting maneuverability and navigation safety.

When to replace this part?

A damaged or worn propeller manifests itself with symptoms such as abnormal vibrations in the hull, loss of power despite full engine acceleration, or a notable decrease in the maximum revolutions reached. Visually inspect before each boating season and after any impact with rocks, debris or shallow water; Impacts can cause microscopic cracks or deformations in the blades that compromise dynamic balance. Preventive replacement of the propeller every 2-3 seasons of intense use, or immediately after detecting damage, avoids more costly engine repairs and guarantees optimal and safe performance in all navigation conditions.

Equivalent manufacturer part numbers