55 HP Evinrude Outboard Boat Propellers
2-Cyl. 1976 - 1979

Evinrude 55 HP 1976 - 1979 Outboard Propellers
You Are Viewing Available Prop Pitches For:

Manufacturer: Evinrude

Horsepower: 55 HP

Years: 1976 - 1979

Model: 2-Cyl. Outboard

Specs: Thru Hub Exhaust & 13 Tooth Spline Small Gearcase

Max RPM: Not Available

Where to Find Your Prop Pitch Prop Pitch & RPM's
Choose a Propeller Pitch
Pitch is a measurement of how far the propeller moves forward during one full revolution.
Where to Find Your Prop Pitch

Look on the outer hub of the prop near the blades or inside the hub.

Most props are stamped with a series of numbers.

Pitch is always the last number listed.

Example: 3 x 16 x 24.5R

3 - Number of Blades (occasionally displayed)

16 - Diameter

24.5 - Pitch

R - Direction of Rotation (R = Right/Standard, L = Left/Counter)

Pitch is stamped on the outer prop hub...   ...or
around the inner hub.
Prop Pitch & RPM's

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


A change in the prop pitch will increase or decrease the engine RPM's and can be used to bring them into the recommended range. A 2" pitch increase (for example, from 21" to 23") will result in approximately a 300-400 RPM decrease and vice versa.


The correct prop allows the engine's RPM to run within the top end of the manufacturers recommendation.

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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
Aluminum vs. Stainless Steel
Performance Exhaust
Left-Handed Props FAQ

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.