Tohatsu Nissan Mercury 35-55HP Outboard Propeller 10.8 x 12 4-Blade RH Aluminium Solas 5313-108-12
SOL5313-108-12
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Solas Amita 4 Propeller 5313-108-12
Aluminium 10.8" x 12" 4-Blade Right Hand Propeller
The Amita 4 10.8" × 12" is a 4-blade right-hand aluminium propeller for Tohatsu Nissan Mercury 35-55HP outboard engines (3 1/4" gearcase, 13 tooth spline), Solas part 5313-108-12. For this engine we list 5 pitches from 9" to 14". 12" is a mid-range pitch – balanced all-round performance and the usual starting point.
Key Features
- ✔ Pressed-in rubber hub – no hub kit needed
- ✔ Thru-hub exhaust for optimal flow
- ✔ 4-blade aluminium design for extra grip and hole-shot
- ✔ Anti-corrosion paint finish
Technical Specs
| Diameter: | 10.8" |
| Pitch: | 12" |
| Blades: | 4 |
| Rotation: | Right Hand (RH) |
| Gearcase / Drive: | 3 1/4" |
| Spline Count: | 13 Tooth Spline |
| Material: | Aluminium |
| Solas Part No.: | 5313-108-12 |
Is 12" the Right Pitch for Your Boat?
A 12" pitch means this propeller would, in theory, move the boat 12" forward for every full turn. The right pitch lets your Tohatsu Nissan Mercury 35-55HP outboard reach the full-throttle RPM range given in its owner's manual with a normal load on board.
- ✔ Engine over-revs at full throttle? Go up in pitch – the next size up for this engine is 13".
- ✔ Engine can't reach its rated RPM, or the boat is slow to plane? Go down in pitch – the next size down for this engine is 11".
- ✔ Rule of thumb: a change of 1" in pitch moves full-throttle engine speed by roughly 150–200 RPM.
Other pitches for your Tohatsu Nissan Mercury 35-55HP outboard:
- 9" pitch (11.8" diameter) – the lowest pitch in the range – maximum thrust for heavily loaded boats, pontoons, workboats or towing.
- 11" pitch (11.1" diameter) – a low pitch – stronger acceleration and pulling power for heavier loads, towing and water-sports; roughly 150–200 RPM more at full throttle than 12".
- 13" pitch (10.5" diameter) – a high pitch – more top speed and lower cruising revs for lighter, faster hulls; roughly 150–200 RPM less at full throttle than 12".
- 14" pitch (10.5" diameter) – the highest pitch in the range – maximum top speed for light, fast hulls running lightly loaded; roughly 300–400 RPM less at full throttle than 12".
Compatibility / Fitment Guide
| Make/System | Model/Application | Notes |
|---|---|---|
| Tohatsu | 35-55 HP – 3 1/4" gearcase | 13-tooth spline |
| Nissan | 35-55 HP – 3 1/4" gearcase | 13-tooth spline |
| Mercury | 35-55 HP – 3 1/4" gearcase | 13-tooth spline |
| Mariner | 35-55 HP – 3 1/4" gearcase | 13-tooth spline |
OEM Cross Reference
| Solas | 5313-108-12 |
Questions & Answers
Will this propeller fit my Tohatsu Nissan Mercury 35-55HP outboard?
It fits Tohatsu Nissan Mercury 35-55HP outboard engines with a 3 1/4" gearcase, 13 tooth spline. Check the fitment table above and compare the size stamped on your current propeller (10.8" × 12") before ordering.
Should I choose 12" or a different pitch?
Keep the same pitch as your current propeller if the engine reaches its rated full-throttle RPM. If it over-revs, 13" is the next step up. If it struggles to reach rated RPM, 11" is the next step down.
Is this a genuine original part?
This is a genuine Solas propeller – a premium aftermarket replacement made to meet or exceed original equipment (OE) fitment and performance.
How do I know if it is compatible?
Check the Solas part number (5313-108-12) or OEM number on your current propeller, plus your gearcase size and spline count. If you are unsure, send us your engine make, model and year and we will confirm fitment before you order.
Does this propeller require a separate hub kit?
No. This propeller has a traditional pressed-in rubber hub and fits straight onto your propeller shaft with your existing thrust washer and nut.
Note: Please verify your engine's gearcase size, spline count and propeller size against the references above before purchasing. Domain: 4boats.co.uk
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