ALUMINUM PROPELLER 15.3X21 RIGHT 48-13702A46

Function and technical context

The aluminum propeller is the fundamental propulsion element that transforms the power of the outboard motor into direct thrust towards the water, generating the movement of the boat. It works integrated into the marine transmission system, where it receives the rotation of the engine output shaft and converts it into propulsion through its fixed pitch blades. Its proper operation is critical to maintaining navigation efficiency, optimal fuel consumption and throttle response; A progressive deterioration of the propeller causes loss of revolutions, reduction of maximum speed and overexertion of the engine that accelerates the general wear of the propulsion unit.

When to replace this part?

Common symptoms of propeller wear include noticeable vibrations in the steering rod, progressive loss of speed despite full revolutions, and visible damage such as blade breakage, deformation or surface erosion caused by marine cavitation. It is recommended to inspect the propeller at the beginning of each navigation season and after impacts or contact with submerged objects; In waters with high sediment or rock content, the check should be done more frequently. Preventively replacing a worn propeller prevents secondary damage to the transmission system and significantly reduces the risk of breakdown in high-altitude navigation.

Equivalent manufacturer part numbers