Boat propeller ID number meaning?

Question

I wan to replace my propeller and would like to know what this number stand for. I have two propeller and both fits but have different numbers. I'm not sure what to buy. Here is an example # 48-58426-23, 14 x 23. I know that my shaft has 15 spline. Can someone help to tell me what all this number means

thanks

Answer 1

Spline count would have to be found from the part number.

Pitch tells you how many inches the prop would travel in one full rotation.

general rule, there's an inverse relationship of one to 200 between inches of prop pitch and WOT RPM of the motor it's installed on (all else being equal).

other words, higher prop pitch reduces torque and puts heavier load on the motor, restricting its ability to make RPMs.

Answer 2

This is the Part Number 48-58426-23.

This is the Dia of  it 14 in. round.

This is the Pitch of the blades 23 .what Degree the blades are Twisted.

Answer 3

The first # you gave is a Merc part#.  If you are satisfied with the performance of your boat, give this # to your local dealer or parts express.  If you have concerns, go to mercurymarine.com, and follow the links to their prop selector program.  This program will ask you questions about your boat and motor, and make recomendations as to which prop is right for you.  It's not perfect, but in most cases it works well.  I don't recomend aftermarket props like Sola, etc.  They use a lesser grade of  aluminum, have poorer quality hubs, and have a poorer polish and paint.

Answer 4

14 x 23 thats the pitch and diameter of the prop[size]  the first bunch of numbers is the part number   it looks like a mercury part niumber to me

Answer 5

The 14 is the diameter  and the 23 is the pitch.  Both props will probibly fit but the boat will preform better with one ot the other.  It's basicly a balance between speed and power.  The 23 is speed   17 or 19 pitch gives more thrust ie power.

Answer 6

First write down your boat's outboard or I/O information down.  Most prop selection can be done by narrowing down the HP, the model, and the year of the outboard or I/O drive.

It also might help to know your WOT (Wide Open Thottle) RPM and max speed for some searches.

Unless you have an outboard or I/O that dates before 1977, it should be no problem hunting for a prop.

If you have a heavy boat or intend on pulling skiers, you probably will want to stick with a 17 to 19 pitch prop.  A 23 pitch prop will not work well under heavy load and will bog the engine down.

I recommend you use www.iboats.com prop selector system to get a general idea of what is available.  

However, if you want to buy a prop online, I recommend you go your service shop and verify all the search criteria you used to find a prop online.  If yours is a Mercury, Mariner, or Mercrusier, write down the Quicksilver prop number it finds for you in the 3 bladed aluminum prop.

Example:  Mine is a 1985 inline 4 cylinder 140 Mercrusier, with a diameter of 14 inches, a pitch of 19, and a standard rotation.

I enter the sterndrive type, the year, and the type of rotation for the prop (standard or counter-rotating).  I pick which drive system it is, then select the pitch of the prop desired.

A Quicksilver Black Diamond prop for mine:

Prop part #: QA2016X

Hub #: 835257Q 1

I can take any Quicksilver part number to any Merc dealer or Merc service shop and verify it if it is valid for my boat when I bring both my engine and sterndrive's serial numbers.