Aluminum Propeller AMITA3 9.30X8 Right Hand 4111-093-08A

Function and Technical Context

The AMITA3 aluminum propeller with a diameter of 9.30 inches and an 8-inch pitch right-hand rotation acts as the final link in the transmission chain for low-power outboard motors, directly converting engine torque into propulsive thrust on the water. Specifically designed for Johnson and Evinrude motors in the 10 and 15 HP range with 302 cc displacement in 4-stroke version, its three-blade geometry optimizes performance in lightweight vessels such as inflatables, artisanal fishing boats and auxiliary vessels of reduced length. The marine aluminum alloy used in its construction combines structural rigidity with a degree of controlled deformation capability when impacting submerged objects, acting as a mechanical fuse that absorbs impact energy before it reaches the propeller shaft, the conical gears or the seals of the lower unit. Operating with a damaged propeller increases fuel consumption, overloads the engine and can cause serious damage to the lower unit that is significantly more costly to repair than simple propeller replacement. The equivalent manufacturer references for this part are OMC 5005383 and 5033199, as well as Suzuki 58100-90L41-019.

When Should This Part Be Replaced?

The clearest indicators that the propeller requires immediate replacement are: noticeable vibrations in the transom during navigation, loss of top speed or the engine's inability to reach the operating RPM recommended by the manufacturer, persistent cavitation even in calm waters, and any visible deformation in the blades—bends, nicks, fractures or pronounced erosion on the leading edges—. An unbalanced blade, even if the damage appears minor, generates asymmetric cyclic loads that accelerate shaft bearing wear and degrade water seals, opening the way for salt water leakage into the lower unit oil. It is recommended to visually inspect the propeller at each seasonal tune-up and proceed with preventive replacement at any doubt about its condition, since an unexpected breakdown due to blade fracture in an anchorage zone or in coastal navigation has a much simpler and more economical solution if the part is replaced on a scheduled basis at the workshop.

Compatible Johnson/Evinrude Engines

Equivalent Manufacturer References