Mercury Marine Alpha 4 Propellers

Mercury makes the most comprehensive, leading-edge lines of propellers.

Comfort and performance combine as you sail swift and sure over the chop.

Mercury Props achieve record-setting acceleration and with smooth steering.
Mercury Marine Alpha 4 Propellers
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Propeller Help Guide
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Propeller Help Guide
P is for Propeller Propeller Basics
How To Choose A Prop
Diameter Pitch
Cupping Rake
Ventilation Cavitation

We tell you everything you need to know about props from cupping to ventilation.

 		Learn About Prop Characteristics Prop Characteristics
3 Blades VS. 4 Splines
Left-Handed Props
Performance Exhaust
Aluminum vs. Stainless Steel

If you want to modify your boat's performance, consider the above before making your selection.

 		Learn About Engine RPM Determining RPM's
Effect of pitch on RPM
Test for Maximum RPM



For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer.