ALUMINUM PROPELLER 11.4X12 RIGHT 48-816702A40

Function and technical context

The propeller is the fundamental propulsion element of the marine transmission system, responsible for converting engine power into direct thrust over the water. In outboard and sterndrive engines, the propeller works in combination with the gearbox and drive shaft, transmitting the rotary motion of the crankshaft to the aquatic environment. Its 13-spline design and 11.4x12-inch dimensions guarantee a secure coupling with the transmission hub, avoiding slippage that would cause loss of thrust, cavitation and engine overheating. A propeller in poor condition or worn reduces propulsive efficiency, increases fuel consumption and compromises the maneuverability of the boat.

When to replace this part?

The propeller requires inspection and replacement when it shows visible deformations, cracks in the blades, loss of material on the leading edges, or when the engine loses revolutions in its normal operating range without apparent cause in the fuel or ignition system. It is recommended to inspect the propeller at least once per boating season and after any impact with submerged objects or rocks. Preventively replacing a worn or damaged propeller avoids unexpected navigation failures and protects the transmission system from overstress that could damage the gearbox or shaft.

Equivalent manufacturer part numbers