ALUMINUM PROPELLER 11.5X12 RIGHT

Function and technical context

The 11.5 x 12-inch aluminum propeller is the direct driving element of the marine drive system, responsible for converting engine power into forward or reverse motion of the boat. Installed on the tail shaft and driven by the gearbox, it works submerged in water at variable pressure depending on the speed and navigation conditions. Its right-hand turning design (standard convention on single-engine boats) ensures directional stability and predictable behavior of the boat. A damaged, cracked or worn propeller causes loss of thrust, structural vibrations, excessive fuel consumption and potential entry of water into the shaft sealing system.

When to replace this part?

Propeller wear is manifested by abnormal engine vibrations, progressive reduction in maximum speed, irregular draft or asymmetry in rotation. Inspect the propeller visually each boating season, especially after boating in shallow or vegetated waters, since impacts with rocks, submerged wood or entanglements cause material loss in the blades. Replacing a worn propeller preventively prevents cascading damage to the shaft, bearings and seal, costly repairs that are inevitable if you sail for too long with the propeller compromised.

Equivalent manufacturer part numbers