Description
Polaris 15x21 S3l Prop Soltiga 3 | Boat Supply Store
This 15x21 S3l propeller from Polaris is engineered for superior thrust and efficiency, directly impacting fuel economy and hole shot. Its robust construction is designed to withstand significant torque, ensuring consistent power transfer from your outboard. Ideal for larger bay boats or offshore vessels operating in moderate sea states, it optimizes performance for planing and cruising speeds.
Key Features
- Optimized pitch and diameter for enhanced acceleration
- Durable construction for extended operational life
- Improved fuel efficiency through precise blade design
- Reduced cavitation for smoother operation
- Corrosion-resistant materials for saltwater environments
- Direct replacement for specified engine models
- Superior hydrodynamic efficiency
- Engineered for reliable power delivery
Specifications
| Product Specifications | |
|---|---|
| Pitch | 21 |
| Diameter | 15 |
| Blade Count | 3 |
| Material | Stainless Steel |
| Series | S3l |
Who This Is For
This propeller is designed for boat owners operating larger horsepower outboard engines who prioritize efficient hole shots and improved top-end speed. It is suited for those running a 15-inch diameter by 21-inch pitch configuration on vessels commonly used for offshore fishing or cruising.
How It Compares
| Feature | Polaris 15x21 S3l Prop Soltiga 3 | Mercury Marine |
|---|---|---|
| Pitch | 21 | 21 |
| Diameter | 15 | 15 |
| Blade Count | 3 | 3 |
| Material | Stainless Steel | Stainless Steel |
Common Concerns Answered
Will this propeller fit my outboard motor?
This propeller is designed to fit specific outboard engine models that utilize a 15x21 S3l configuration. Always verify your engine's compatibility with the specified spline count and thrust hub before purchase to ensure proper installation and performance.
How does a 3-blade propeller differ from a 4-blade?
Three-blade propellers generally offer a better top-end speed and are more efficient at cruising speeds, while four-blade propellers typically provide superior hole shot acceleration and better stern lifting capabilities. The Soltiga 3's 15x21 pitch is optimized for a balance of these characteristics.
What is the expected lifespan of this stainless steel propeller?
Constructed from high-grade stainless steel, this propeller is engineered for longevity and resistance to corrosion and impact. Regular inspection and maintenance, particularly in saltwater environments, will ensure its performance and lifespan are maximized.
Frequently Asked Questions
What is the significance of the 'S3l' designation?
The 'S3l' designation refers to a specific blade geometry and construction series by Polaris Propeller, indicating a design optimized for particular performance characteristics such as speed, efficiency, and fuel economy for its pitch and diameter.
How will a 15x21 propeller affect my boat's performance?
A 15-inch diameter by 21-inch pitch propeller is typically chosen for boats that need to achieve higher cruising speeds and good fuel efficiency at moderate RPMs. It provides a balance between acceleration and top-end velocity for many vessel types.
Is this propeller suitable for saltwater use?
Yes, this propeller is constructed from stainless steel, which offers excellent resistance to corrosion commonly found in saltwater environments, ensuring durability and extended operational life.
What is the ideal engine RPM range for this propeller?
While specific optimal RPMs vary by boat hull and engine load, a 15x21 propeller is generally designed to allow the engine to reach its manufacturer-specified wide-open throttle (WOT) RPM range, typically between 4800-5800 RPM for many outboard applications.
Does this propeller require a specific hub kit?
Propeller fitment depends on the specific outboard engine spline count and drive system. While this propeller is designed for common applications, always consult your outboard's service manual or our fitment guide to confirm the correct hub kit is used for secure installation.
