ALUMINUM PROPELLER 9.30X8 RIGHT

Function and technical context

The propeller is the fundamental propulsion element that transforms the power of the engine into movement of the boat through the water. This 9.30-inch diameter, 8-inch pitch aluminum propeller works in the marine drive system, coupled directly to the engine output shaft via the attachment hub. Its 14-spline geometry and 2 1/2-inch casing have been specifically designed to optimize hydrodynamic performance in mid-power outboard and sterndrive engines, ensuring constant propulsion efficiency and correct engine workload. Progressive wear or damage to the blades significantly reduces the available thrust, causes excessive vibration during navigation and can compromise the directional stability of the boat.

When to replace this part?

A worn or damaged propeller presents clear symptoms: audible cavitation (bubbling noise in the water), progressive loss of maximum speed while maintaining engine revolutions, abnormal vibration in the shaft and increased fuel consumption. It is recommended to check the condition of the propeller at the beginning of each boating season and after any impact with submerged objects or shallow bottoms. Replacing the propeller preventively when small cracks or deformations are detected prevents secondary damage to the drive shaft and bearings, repairs that are significantly more expensive.

Equivalent manufacturer part numbers