Aluminum Propellers for 150–300HP Suziki Outboard Boat Motor
Have you ever wondered why your boat’s performance seems lackluster, even when the engine is perfectly tuned? At times, it’s not the engine that’s underperforming—it’s the propeller! Choosing a well-designed aluminum propeller can transform your boating experience, especially for 150–300HP Suziki outboard motors. Below, you’ll discover essential insights on how to select the ideal propeller and a detailed chart showcasing compatible aftermarket replacements that align with certain Yamaha® and Mercury® OEM references. We are not, however, affiliated with Yamaha, Mercury, Suziki, Volvo, or Honda in any official capacity.
Why Propeller Choice Matters
A boat propeller determines how efficiently an engine’s power converts into thrust. The right combination of pitch, diameter, and blade count can enhance your hole shot, cruising speed, fuel efficiency, and overall handling. At the end of the day, you want smooth acceleration and a comfortable ride. Ironically, some boaters invest in top-tier engines but overlook the propeller, which is the final piece of the performance puzzle!
Key Factors to Consider
- Diameter: A larger diameter can provide stronger thrust and better load-carrying capacity, while a smaller diameter often yields higher RPM and top-end speed.
- Pitch: A lower pitch prop gives swift acceleration but might reduce top speed. A higher pitch boosts speed potential, yet it can compromise low-end power.
- Number of Blades: Three-blade propellers typically deliver faster speeds, whereas four-blade models improve stability and mid-range performance.
- Rotation: Most outboards use right-hand (clockwise) rotation. Some setups, especially twin-engine rigs, use left-hand rotation on one side to counteract torque effects.
Aluminum Propellers Table
Below is a reference table that identifies select aluminum propellers designed for a 4-3/4" gearcase with a 15-spline tooth shaft and thru-hub exhaust, suitable for many 150–300HP outboard engines. OEM numbers listed serve only as compatibility guides. Our propellers are aftermarket products and not official Yamaha or Mercury parts.
| OEM # | Blades | Diameter (in.) | Pitch (in.) | Rotation |
|---|---|---|---|---|
| 6G5-45974-03-98 | 3 | 13 3/4 | 19 | M |
| 6G5-45943-01-98 | 3 | 13 3/4 | 21 | M |
| 6G5-45945-01-98 | 3 | 14 | 19 | K |
| / | 3 | 14 | 23 | R |
| 6G5-45943-01-00 | 3 | 14 1/4 | 21 | R |
| / | 3 | 14 1/2 | 15 | R |
| 6G5-45947-01-98 | 3 | 14 1/2 | 17 | M |
| 6G5-45945-01-00 | 3 | 14 1/2 | 19 | R |
| / | 3 | 14 3/4 | 17 | R |
| / | 3 | 14 4/5 | 17 | R |
| / | 3 | 14 4/5 | 17 | L |
| / | 3 | 15 | 15 | R |
| / | 3 | 15 | 17 | R |
| 6G5-45941-00-98 | 3 | 15 1/4 | 15 | M |
| / | 3 | 15 1/4 | 19 | R |
| / | 3 | 15 1/4 | 19 | L |
| / | 3 | 15 1/4 | 20 | R |
| / | 3 | 15 1/4 | 20 | L |
| / | 3 | 15 1/4 | 21 | R |
| / | 3 | 15 1/4 | 21 | L |
| / | 3 | 15 1/4 | 23 | R |
| / | 3 | 15 1/4 | 23 | L |
| / | 3 | 15 1/2 | 17 | R |
| / | 3 | 15 3/4 | 15 | R |
| / | 3 | 15 3/4 | 15 | L |
| / | 3 | 16 | 11 | R |
| / | 3 | 16 | 13 | R |
| / | 3 | 16 | 17 | R |
| / | 3 | 16 | 18.5 | R |
| / | 3 | 16 | 20 | R |
| / | 3 | 16 | 21.5 | R |
| / | 4 | 14 | 21 | R |
| / | 4 | 14 1/4 | 19 | R |
| / | 4 | 14 1/2 | 15 | R |
| / | 4 | 14 1/2 | 17 | R |
| / | 4 | 15 | 13 | R |
| / | 4 | 15 | 15 | R |
Understanding the Specs
-
OEM #
- If shown, references certain Yamaha part numbers. An entry of “/” means no specific OEM reference.
-
Blades
- Affects acceleration, speed, and smoothness. Three-blade props often deliver higher top speed, while four-blade options can enhance stability and mid-range control.
-
Diameter (in.)
- This measurement influences thrust and RPM. Larger diameters push more water, and smaller diameters can spin faster.
-
Pitch (in.)
- Indicates how far a prop would travel in one revolution if there were no slip. Low pitch improves hole shot; high pitch boosts top speed.
-
Rotation
- R (Right-Hand) rotates clockwise, viewed from the stern.
- L (Left-Hand) rotates counterclockwise.
- Letters like “M” or “K” may indicate special blade or hub styles in some OEM references.
Benefits of Our Aluminum Propellers
- Robust Construction: Crafted from corrosion-resistant aluminum alloys.
- Enhanced Efficiency: Optimized blade designs for consistent thrust across a range of speeds.
- Cost-Effective Upgrade: Our aftermarket solutions cost less than many official replacements.
- User-Friendly Installation: They fit 4-3/4" gearcases with 15 splines and thru-hub exhaust systems found on many 150–300HP outboard motors.
Important Disclaimer
We offer compatible replacement propellers that fit various outboard engines, including some Yamaha and Mercury models, but we are not officially endorsed by these manufacturers. We only reference OEM numbers to help you find a suitable match.
Conclusion
Selecting the perfect aluminum propeller might feel like a puzzle, yet the rewards are extraordinary! Once you find the right combination of pitch and diameter, you’ll notice smoother cruising, quicker acceleration, and more enjoyable days on the water. Don’t judge a book by its cover—propellers are small compared to the entire boat, but they wield immense influence over performance. If you have questions or need guidance, our dedicated team is always ready to help you navigate the waters of propeller selection. Happy boating!