ALUMINUM PROPELLER 9.9X9 RIGHT

Function and technical context

The right-hand 9.9x9 aluminum propeller is the fundamental propulsion element of the outboard motor transmission system, responsible for converting the rotation of the shaft into direct movement of the boat. Made of aluminum with 10 optimized grip grooves, it works directly coupled to the engine output shaft, transmitting the power generated by the propeller to the water. Proper operation is critical to maintaining navigation efficiency, proper fuel consumption, and throttle response; Damage or wear to the blades drastically reduces thrust, increases stern vibrations and can cause cavitation, compromising the safety and performance of the maneuver.

When to replace this part?

Aluminum propellers should be inspected regularly for bends, cracks, erosion on the leading edges of the blades and progressive wear of the splines, typical symptoms after sailing in waters with rocks, reefs or weeds. It is recommended to check the condition at each change of season and replace preventively if visible damage, even minor, is detected, since a damaged propeller not only reduces the maximum speed, but can cause chronic vibration that deteriorates bearings and engine seals. Maintaining a propeller in good condition ensures maximum fuel efficiency and avoids costly drive system repairs at sea.

Equivalent manufacturer part numbers