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ALUMINUM OUTBOARD PROPELLER FOR MERCURY 25-70HP
POLYDA PROPELLER
3 BLADES ALUMINUM PROPELLER
FOR MERCURY 25-70HP
C GROUP
13 tooth spline
25-70HP
3-1/4" Gearcase
25hp Bigfoot(4 stroke)...1999-2005
30hp Bigfoot(4 stroke)...2010-newer
30hp(2&4 stroke)...1994-2005
30hp(sea Pro/Marathon)...1994-newer
35hp...1984-1989
402&500 Models...1974-1984
40hp(2&4 stroke/not bigfoot)...1977-newer
40hp(Sea Pro/Marathon)...1977-newer
45hp...1986-1989
48hp(Mariner)...all years
50hp(2&4 stroke/not bigfoot)...1977-newer
55hp(Mercury/Sea Pro/Marathon)...1995-newer
60hp(4 stroke)(not bigfoot or Sea Pro/Marathon)...1978-newer
60hp(2 stroke)...1978-newer
70hp(Model 700)...1983
Force40/50hp...1995-1998
70hp...1991-1995
75hp...1996-1998
| Engine HP&the year | Similar to OEM No. | Description | Hub Type | No. Blade | Diam. | Pitch | Rotation | POLY-DA No. |
| 25-70HP | 48- 87818A45 | C GROUP 13 tooth spline | Pressed in | 3 | 12 1/4 | 9 | RH | M-40C123-09 |
| 48- 73132A45 | 3 | 11 1/4 | 10 | RH | M-40C113-10 | |||
| - | 3 | 11 5/8 | 11 | RH | M-40C116-11 | |||
| 48-855856A46 | 3 | 11 | 12 | RH | M-40C110-12 | |||
| - | 3 | 11 1/8 | 13 | RH | M-40C111-13 | |||
| 48- 73140A45 | 3 | 11 | 15 | RH | M-40C110-15 | |||
| 48- 85632A45 | 3 | 10 7/8 | 11 | RH | M-40C109-11 | |||
| 48- 73134A45 | 3 | 10 5/8 | 12 | RH | M-40C106-12 | |||
| 48-816702A45 | 3 | 10 3/4 | 12 | RH | M-40C108-12 | |||
| 48- 73136A45 | 3 | 10 3/8 | 13 | RH | M-40C104-13 | |||
| 48-816704A45 | 3 | 10 1/2 | 13 | RH | M-40C105-13 | |||
| 48-816706A45 | 3 | 10 3/8 | 14 | RH | M-40C108-14 | |||
| 48- 73138A45 | 3 | 10 1/4 | 14 | RH | M-40C103-14 |
This information is critical to determining the correct propeller for your application:
1. 3 Blades
A 3-blade propeller usually offer s top speed performance.
2. Diameter:
Diameter is the distance across a circle encompassing all of the propeller blades.
3. Pitch:
Pitch is the theoretical distance a propeller will move through the water of each revolution.
4. Right hand or left hand Rotation
In most cases, right hand propellers are used for single engine application and one left hand propellers are used for twin engine applications to achieve better steering control.
5. Cupped Blades:
This is a technique used to enhance the performance of propellers under certain conditions. A cupped propeller will exhibit very high efficiency at high speeds as well as minimize cavitation under heavy loads.
6. Rake:
Rake is special design feature. Positive rake benefits from normal bow lift to permit the use of a larger diameter propeller, while negative rake can provide extra blade strength for use in very high speed applications.
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