RUBEX 3-C ALUM PROPELLER 12.1X9 RIGHT

Function and technical context

The three-bladed Rubex aluminum propeller works in the marine propulsion system, transforming engine power into direct thrust over the water. Its 12.1-inch diameter and 9-inch pitch geometry is designed to provide the optimal balance between acceleration and cruising speed in recreational and professional boats. Right pitch (clockwise rotation when viewed from the stern) ensures efficient and stable traction, essential for maintaining the boat's maneuverability and directional control. A worn or damaged propeller causes loss of power, excessive fuel consumption and abnormal vibrations that are transmitted to the entire stern structure.

When to replace this part?

It should be replaced when cavitation (surface erosion on the blades), deformation of the leading edges, cracks in the roots of the blades or changes in sailing behavior such as slow pitch, excessive vibration or abnormal engine noise are observed. Periodic inspection at the beginning of each navigation season and after any impact against rocks or debris is essential to prevent secondary damage to the drive shaft. Preventively replacing a worn propeller avoids costly repairs to the reducer and stern bearings, in addition to ensuring optimal performance and navigation safety.

Equivalent manufacturer part numbers