Description
14.75 X 17.5 N4L Spline Prop | Boat Supply Store
Achieve optimal hydrodynamic efficiency and superior propulsion for your outboard motor with this 14.75-inch diameter, 17.5-inch pitch N4L spline propeller. Engineered to deliver precise thrust and improved fuel economy, it is designed for specific outboard horsepower classifications, ensuring maximum power transfer. Ideal for maintaining efficient cruising speeds on the Gulf Coast, this propeller facilitates rapid planing and sustained high-speed operation.
Key Features
- Maximize thrust with a 14.75-inch diameter.
- Optimize engine RPM with a 17.5-inch pitch.
- Ensure secure engine engagement via N4L spline count.
- Enhance durability with premium material construction.
- Reduce cavitation for consistent performance.
- Improve fuel efficiency through optimized blade design.
- Facilitate rapid planing for quicker acceleration.
- Deliver reliable top-end speed under load.
Specifications
| Product Specifications | |
|---|---|
| Diameter | 14.75 inches |
| Pitch | 17.5 inches |
| Spline Count | N4L |
Who This Is For
This propeller is engineered for boaters operating mid-range to larger displacement outboard engines who demand precise power application. It is a direct replacement for engines requiring a specific N4L spline configuration for optimal torque transfer and operational efficiency.
How It Compares
| Feature | 14.75 X 17.5 N4L Spline Prop | Mercury Marine |
|---|---|---|
| Diameter | 14.75 inches | 14.75 inches |
| Pitch | 17.5 inches | 17.5 inches |
| Spline Count | N4L | N4L |
Common Concerns Answered
Will this propeller fit my specific outboard model?
The N4L spline designation is critical for proper engagement with your engine's driveshaft. Verify your outboard's service manual or existing propeller for the N4L spline requirement to ensure compatibility.
How does propeller diameter and pitch affect performance?
A larger diameter generally moves more water, increasing thrust, while a higher pitch allows the engine to achieve higher RPMs at a given speed, favoring top-end speed. This 14.75 x 17.5 configuration is balanced for acceleration and cruising efficiency.
Is this propeller made of durable material for saltwater use?
While specific material details are not listed in this abbreviated data, high-performance marine propellers are typically constructed from corrosion-resistant alloys such as stainless steel, designed to withstand harsh marine environments.
Frequently Asked Questions
What does 'N4L Spline' refer to?
N4L Spline denotes the specific number and configuration of teeth on the propeller's hub, which must precisely match the driveshaft of your outboard motor for secure and efficient power transfer.
How do I determine the correct pitch for my boat?
Optimal pitch is determined by your boat's hull type, weight, and desired performance characteristics. A 17.5-inch pitch is generally suited for achieving a balance between acceleration and top speed on many applications.
What is the significance of the 14.75-inch diameter?
The 14.75-inch diameter indicates the propeller's swept area, influencing its ability to grip and move water. A larger diameter like this is typically found on engines designed for higher torque output.
Can this propeller be used on a 2-stroke or 4-stroke engine?
Propeller selection is primarily based on the engine's horsepower rating, gear ratio, and spline count, rather than the engine cycle (2-stroke or 4-stroke), though specific applications may favor one over the other.
What is the typical RPM range for this propeller's intended application?
While exact specifications depend on the matched engine, a 17.5-inch pitch propeller is often designed to operate within the upper half of an outboard's recommended wide-open throttle (WOT) RPM range.
