ALUMINUM PROPELLER 15.8X15 RIGHT 48-19838A46

Function and technical context

The aluminum propeller is the fundamental propulsion element that transforms the power of the engine into movement of the boat through controlled rotation in the water. This 15.8-inch diameter, 15-inch pitch propeller works in close coordination with the transmission system and tailshaft, receiving power from the Mercruiser or Command Thrust engine. The design of 15 hydrodynamic grooves optimizes the capture and expulsion of water, guaranteeing progressive acceleration, directional stability and fuel efficiency in cruising and high speed navigation. A propeller in poor condition causes loss of power, increased consumption, abnormal vibrations in the shaft and, in extreme cases, water ingress through the stuffing box.

When to replace this part?

Aluminum propellers require visual inspection at each seasonal maintenance, particularly before spring launching, for warping, radial cracks, edge erosion, and material loss due to galvanic corrosion. Symptoms of wear include persistent vibrations at cruising speed, progressive loss of maximum revolutions compared to the boat's historical performance, abnormal noises in the shaft and excessive fuel consumption. Preventatively replacing the propeller when minor deformations are detected prevents costly secondary damage to the drive shaft and engine, as well as ensuring safety and maneuverability in adverse conditions.

Equivalent manufacturer part numbers