fits model: Mariner. make: Mercury. year: 2013–2023.

( Manufacturer Part Number: 65736A4 ), ( Part Type: Hp Prop ), ( Propeller Rotation: Standard )
The **Mercury 48-65736A4 13x23 Pitch Propeller** is a high-performance, precision-engineered marine propeller designed specifically for Mercury outboard motors ranging from **40 to 140 horsepower**, making it an ideal choice for boats requiring a balance of efficiency, speed, and reliability. Crafted from **high-grade, corrosion-resistant stainless steel**, this propeller is built to withstand the harshest marine environments, ensuring long-lasting durability even in saltwater conditions. Its **13-inch diameter** and **23-inch pitch** create an optimal blend of acceleration and cruising performance, allowing for quick planing and smooth, fuel-efficient operation at higher speeds. The **A4 blade design** features a refined, hydrodynamic contour that minimizes cavitation and reduces vibration, enhancing both comfort and engine longevity. Whether used on a sportfishing boat, a performance cruiser, or a versatile dayboat, this propeller delivers exceptional thrust while maintaining smooth operation across a wide RPM range. Its **universal compatibility** with Mercury s 40 140 hp outboards makes it a versatile upgrade for boat owners seeking improved handling, reduced fuel consumption, and enhanced overall performance without sacrificing reliability. Built to Mercury s exacting standards, this propeller is a trusted choice for those who demand precision engineering and dependable performance in every outing.
### **Pros and Cons of buying a Mercury 65736A4 (48-65736A4 13-23 Pitch) Prop for a 40-140 HP Marinier Outboard**
#### **Pros:**1. **Versatility in Power Range** This prop is designed to work efficiently across a broad power range (40-140 HP), making it a practical choice for boats that may experience varying load conditions or future power upgrades.
2. **Balanced Performance** The 13-23 pitch range provides a middle ground between acceleration and cruising efficiency. A 13-pitch blade offers better low-end torque for towing or heavy loads, while the 23-pitch blade improves fuel economy and top-end speed in lighter conditions.
3. **Durability and Quality** Mercury props are known for their robust construction, often featuring stainless steel blades and corrosion-resistant materials, which extend the prop s lifespan in saltwater environments.
4. **Compatibility with Marinier Outboards** Since this prop is designed for Mercury outboards (and likely compatible with Marinier s similar models), it ensures proper fitment and optimized performance without major modifications.
5. **Cost-Effective for Multi-Purpose Use** If your boat is used for both cruising and light towing, this prop can serve as a good all-around solution without requiring multiple props.
6. **Easier Maintenance** A single prop simplifies storage and maintenance compared to having multiple props for different conditions.
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#### **Cons:**1. **Limited Optimization for Extreme Conditions**
- If your primary use is **heavy towing or high-speed planing**, a prop with a lower pitch (e.g., 10-16) would provide better acceleration and power delivery.
- If your primary use is **long-distance cruising with minimal load**, a higher pitch (e.g., 20-26) would improve fuel efficiency and top-end speed.
2. **Potential for Compromised Performance**
- The 13-pitch blade may feel sluggish at higher speeds in lighter loads, while the 23-pitch blade could struggle with acceleration when heavily loaded.
- This prop may not be as efficient as a single-pitch prop specifically tuned for your boat s exact weight, load, and intended use.
3. **Weight Considerations**
- A larger, multi-pitch prop can be heavier than a single-pitch option, which might slightly reduce maneuverability or handling in tight spaces.
4. **Potential for Higher Cost**
- While not always the case, multi-pitch props can sometimes be more expensive upfront than a single-pitch prop, depending on the brand and materials.
5. **Adjustment Complexity**
- Some multi-pitch props require manual adjustment (e.g., shifting between pitches), which adds a small layer of maintenance compared to a fixed-pitch prop.
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### **Conclusion:**The **Mercury 65736A4 (48-65736A4 13-23 pitch) prop** is a **solid, versatile choice** for a **Mariner outboard in the 40-140 HP range**, especially if your boat is used for **moderate towing, general cruising, or mixed conditions**. It strikes a balance between acceleration and efficiency, making it a practical all-around prop for boats that don t have extreme performance demands.
However, if your boat s primary use is **heavy towing (e.g., wakeboarding, skiing, or large trailers)**, a **lower pitch (e.g., 10-16)** would be more suitable. Conversely, if your focus is **long-distance cruising with minimal load**, a **higher pitch (e.g., 20-26)** would optimize fuel economy and top speed.
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### **Recommendation:** - **Buy this prop if:**- Your boat is used for **general cruising, light towing, or mixed conditions**.
- You want a **single prop that handles a range of scenarios** without needing frequent changes.
- You prefer **Mercury s reliability and durability** in a saltwater environment.
- **Consider an alternative if:**- Your boat is **heavily loaded most of the time** (e.g., frequent towing of large trailers or water sports). In this case, a **lower pitch (e.g., 10-16)** would improve acceleration and power.
- Your primary use is **high-speed cruising with minimal load**, where a **higher pitch (e.g., 20-26)** would be more efficient.
- You want **maximum performance tuning** a **custom single-pitch prop** (matched to your exact boat weight and load) could offer better results than a multi-pitch compromise.
**Final Verdict:** This prop is a **good all-purpose option** for most 40-140 HP Marinier outboards, but it may not be the absolute best choice for boats with very specific performance needs. If you re unsure, consult a **Mercury-certified prop specialist** to ensure the prop matches your boat s exact conditions.
This prop Does Not include hardware. 4 1/4 inch gear case bullet, Rubber Hub System Built In. The pitch of the propeller is extremely important. MPN: 65736A4 48-65736A4.
Casting Number: 48-65736-19. This sale is for one refurbished prop Mercury and Mariner outboards, part number: 48-65736A4, Aluminum, 3 blades Cupped, 13 inch diameter, 23 pitch, Right Hand rotation Standard Clockwise Rotation, Fits 15 Tooth Spline Propeller shaft. Brand: Mercury. You can use your old stepped thrust washer with it.