PROPELLER NUT 16147

Function and technical context

The propeller nut is the critical fastener that secures the propeller to the outboard motor drive shaft. It works in the propulsion system, supporting the extreme rotational forces generated during acceleration and navigation at different speeds. Improper fastening or wear of this part can cause the propeller to be lost while running, resulting in total loss of control of the boat and a serious safety risk. For this reason, maintenance and preventive replacement of this nut is essential to guarantee the reliability of the propulsion system.

When to replace this part?

It is advisable to replace the propeller nut when you present symptoms such as abnormal vibration in the shaft, visible movement of the propeller when pulling it manually, or if the nut shows advanced corrosion or deformation due to contact with salt water. It is recommended to inspect it at each seasonal inspection and replace it preventively every 2-3 seasons of intense use, especially if you sail in salt waters where corrosion is more aggressive. Carrying out this replacement preventively avoids unexpected breakdowns and guarantees the safety of your boat in any navigation condition.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers