1. Propellers Boat Parts For Sale
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  3. MERCURY 48-77340A40L

MERCURY 48-77340A40L Rh Boat Prop Pitch Spline

fits make: Mercury. year: 2013–2015.

48-77340a40l Mercury Rh Aluminum Boat Prop 14 X 13 Pitch 15 Spline 77340

( Manufacturer Part Number: 48-77340A40L ), ( Part Type: Aluminum Prop ), ( Propeller Rotation: Standard )

Review MERCURY Rh Aluminum Boat Prop Pitch Spline 77340 fits 2013–2015

The **Mercury 48-77340A40L RH Boat Propeller** is a high-performance, precision-engineered propeller designed to maximize efficiency, power transfer, and overall boat handling for Mercury outboard-equipped vessels. This **14-inch diameter, 13-pitch, 15-spline** right-hand (RH) propeller is crafted from high-grade, corrosion-resistant materials, ensuring durability and longevity even in the most demanding marine environments. The **A40L designation** indicates a specialized blade design optimized for **acceleration and top-end speed**, making it an ideal choice for boats requiring a balance of quick response and sustained high performance. The **13-pitch** is engineered to provide a smooth, progressive power curve, allowing the propeller to efficiently handle both low and high RPM ranges without sacrificing thrust or fuel economy. The **15-spline shaft** ensures a secure and vibration-dampening connection to the outboard s gearcase, reducing wear and enhancing reliability over time. Whether installed on a **performance cruiser, speedboat, or high-performance fishing vessel**, this propeller delivers exceptional traction, reduced cavitation, and improved fuel efficiency, making it a standout choice for anglers, racers, and enthusiasts seeking peak performance. Built to meet Mercury s rigorous standards, this propeller is a testament to innovation in marine propulsion, ensuring that every stroke of the engine translates into maximum power and control.

### **Pros and Cons of buying a Mercury 48-77340A40L RH Boat Prop (14" Pitch, 13" Diameter, 15 Spline)**

#### **Pros:**

1. **High Performance for Outboard Engines** This is a high-quality, aftermarket propeller designed to maximize thrust and efficiency for Mercury outboards, particularly in the 150 250 HP range. It is optimized for speed, fuel economy, and towing capability, making it suitable for fishing, cruising, and wakeboarding.

2. **Durable Construction** The prop is likely made from high-grade stainless steel (common in aftermarket props), which resists corrosion and wear better than standard stock props, especially in saltwater environments.

3. **Customized for Specific Applications** The **14" pitch** suggests it is designed for a balance between speed and torque, making it versatile for different uses (e.g., planing, cruising, or light towing). The **13" diameter** provides a good compromise between acceleration and top-end speed.

4. **Compatibility with Mercury Outboards** Since it is a Mercury-specific part (indicated by the model number), it is engineered to fit seamlessly with Mercury s outboard systems, reducing the risk of damage or poor performance.

5. **Potential for Improved Fuel Efficiency** A well-matched propeller can reduce drag and improve fuel economy compared to a stock or mismatched prop.

6. **Aftermarket Support & Tuning Options** Mercury s aftermarket props often come with tuning guides, allowing boat owners to adjust pitch or diameter for specific needs (e.g., deeper V-hulls, heavier loads, or wakeboarding setups).

7. **Longevity with Proper Maintenance** If installed correctly and maintained (regular cleaning, lubrication, and inspection), this prop can last for many years without significant wear.

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#### **Cons:**

1. **Higher Upfront Cost** Aftermarket props are typically more expensive than stock replacements, especially from reputable brands like Mercury. The price may not be justified if the boat is not heavily used or if the stock prop is still in good condition.

2. **Potential for Overkill on Smaller Engines** If the boat s engine is on the lower end of the recommended power range (e.g., a 150 HP engine pushing a heavy load), a **14" pitch prop** might be too aggressive, leading to excessive strain on the engine or poor acceleration.

3. **Risk of Damage from Debris** Like all props, this one is vulnerable to damage from rocks, docks, or fishing line. A high-performance prop may suffer more severe damage if struck, potentially requiring costly repairs or replacement.

4. **Installation Complexity** Replacing a prop requires removing the engine from the water, which can be time-consuming and may require additional tools or professional help, especially for larger outboards.

5. **Not Universal for All Mercury Models** While this prop is designed for Mercury outboards, it may not fit every model perfectly. The **15-spline shaft** is standard for many modern Mercury outboards, but verifying compatibility with the exact engine model is crucial to avoid issues.

6. **Maintenance Requirements** High-performance props can accumulate more marine growth (e.g., barnacles) due to their design, requiring more frequent cleaning and inspection to maintain efficiency.

7. **Warranty Considerations** If the prop is purchased separately from a Mercury dealer, the warranty may not cover it as thoroughly as an OEM replacement. Always check warranty terms before buying.

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### **Conclusion**

The **Mercury 48-77340A40L RH propeller (14" pitch, 13" diameter, 15 spline)** is a well-engineered aftermarket option for Mercury outboard owners looking to enhance performance, efficiency, and towing capability. It is particularly beneficial for boats used for **speed, cruising, or light towing**, where a balanced pitch and diameter can provide noticeable improvements.

However, it is not a universal solution **it may be overpowered for smaller engines or underutilized for heavy-duty applications**. Buyers should ensure their engine s power range aligns with the prop s specifications and consider whether the cost justifies the performance gains compared to a stock or slightly modified prop.

If the boat is frequently used for **high-performance activities** (e.g., wakeboarding, planing, or towing), this prop is a strong investment. For **casual boaters or those on a tight budget**, a stock or slightly modified prop might be a more practical choice.

### **Recommendation:** - **Buy if:**

- You own a **Mercury outboard in the 150 250 HP range** and want to optimize for speed, fuel efficiency, or towing.

- Your current prop is worn out or underperforming.

- You are willing to invest in a high-quality aftermarket part for long-term reliability.

- You plan to use the boat for **performance-oriented activities** (e.g., water sports, cruising at high speeds).

- **Avoid if:**

- Your engine is **too small** (e.g., 100 HP or less) and the prop will cause excessive strain.

- You rarely use the boat and the stock prop is still functional.

- You cannot verify **exact compatibility** with your outboard model.

- You are on a tight budget and cannot afford the higher cost of an aftermarket prop.

**Final Suggestion:** If possible, consult a **Mercury dealer or marine mechanic** to confirm the prop s suitability for your specific engine and boat setup. They can also provide guidance on tuning or alternative props if this one does not fit your needs perfectly.

Details:

Buyer Pays Return Shipping. Mercury RH Aluminum Boat Prop 14 x 13 Pitch 15 Spline 48-77340A40L 77340.

part #: 4877340a40l price

  • $50.00

specifications propboapar:

  • for makes: Mercury
  • for years: 2013-2015
  • mpn: 48-77340a40l
  • part type: Aluminum Prop
  • propeller rotation: Standard

seller propboapar:

  • # reviews: 550
  • rating: 99.6%
  • city: Gravois Mills, Missouri

offer propboapar:

  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • started: February 19, 2026
  • best offers: True
  • quantity: 1

returns propboapar:

  • time: 14 Days
  • policy: Returns Accepted
  • paid by: Buyer

shipping propboapar:

  • type: Calculated
  • cost: $15.62
  • carrier: USPS
  • transit: 9-13 Days
  • service: USPS Ground Advantage
  • class: Standard

general propboapar:

  • condition: Used
  • Parts Accessories > Boat Parts > Propellers

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for makes: mercury, for years: 2013-2015, part type: aluminum prop, propeller rotation: standard,
category: boat parts > propellers, sku: 12164631982826793,
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1 offer $50.00 USD
  • Used. Offer #1 priced at $50.00 + $16.87 shipping estimate = $66.87* total. +$16.87 shipping

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