ALUMINUM PROPELLER 14X21 RIGHT 48-832832A45

Function and technical context

The propeller is the fundamental propulsion element that transforms the engine power into direct thrust. This aluminum propeller with a pitch of 14 and a diameter of 21 inches works in the marine propulsion system, coupling to the output shaft of the engine to generate the movement of the boat. Its right-hand rotation is specifically designed to synchronize with the direction of rotation of the Mercury engines of the indicated series, guaranteeing maximum efficiency and directional stability. The balance between pitch and diameter determines the relationship between cruising speed and acceleration: a moderate pitch like 14 provides a versatile power curve that does not compromise start-up or final speed in varied navigation conditions.

When to replace this part?

Aluminum propellers degrade due to cavitational erosion, salt corrosion, impacts against submerged objects and general leading edge wear after hundreds of hours of sailing. Symptoms such as abnormal vibrations in the tiller, progressive loss of revolutions at fixed throttle, erratic behavior in corners or less than expected performance indicate advanced wear of the blades. It is recommended to visually inspect the propeller at least once at the beginning of each season and after sailing in debris or very shallow waters; Replacing it preventively before starting a busy season avoids the risk of breakage at sea and the costly repairs that come with loss of propulsion.

Equivalent manufacturer part numbers