ALUMINUM PROPELLER 13.3X17 LEFT

Function and technical context

The left 13.3x17 aluminum propeller is the direct propulsion element of the marine engine, transforming the rotation of the shaft into hydraulic thrust to move the boat. Its backward rotation (left rotation) is specifically intended for engines configured with this direction of rotation, guaranteeing maximum traction efficiency and directional stability. The aluminum blade design provides structural strength while maintaining a balanced operating weight, while its 13.3x17 (diameter x pitch) dimensions are calibrated to develop the optimal power curve in medium displacement engines. A worn, damaged or misaligned propeller causes progressive loss of thrust, excessive vibration, increased fuel consumption and accelerated erosion of internal engine components.

When to replace this part?

Visually inspect the propeller at the beginning of each season or after sailing in debris water, looking for cracks, radial deformations, erosion on the leading edges of the blades or loss of material at the root. If you experience persistent vibrations with the engine running, a notable reduction in maximum speed, unstable behavior of the boat or an abnormal increase in consumption without changes in load or navigation, it is indicative of deterioration of the propeller. Preventively replacing an affected propeller avoids secondary damage to bearings, tail shaft and engine seals, costly repair work that can occur far from port.

Equivalent manufacturer part numbers