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  3. MERCURY 48-61814A4

MERCURY 48-61814A4 Rh Boat Prop Pitch Spline

fits make: Mercury. year: 2011–2013.

48-61814a4 Mercury Rh Aluminum Boat Prop 11 X Pitch 13 Spline 61814

( Manufacturer Part Number: 48-61814A4 ), ( Part Type: Aluminum Prop ), ( Propeller Rotation: Standard )

Review MERCURY Rh Aluminum Boat Prop Pitch Spline 61814 fits 2011–2013

The **Mercury 48-61814A4 RH Boat Prop Pitch 13 Spline** is a high-performance, precision-engineered propeller designed specifically for Mercury outboard motors, offering an optimal balance of efficiency, durability, and thrust for a wide range of marine applications. Crafted from high-grade, corrosion-resistant materials, this right-hand (RH) propeller features a **pitch of 13 inches**, which provides a versatile performance profile ideal for both cruising and light to moderate planing speeds. The **13-inch pitch** strikes a practical middle ground, delivering smooth acceleration, improved fuel economy, and reduced strain on the engine while maintaining strong towing and planing capabilities making it a reliable choice for boats ranging from mid-sized fishing vessels to performance cruisers and utility boats. The **spline shaft connection** ensures a secure, vibration-dampening fit, reducing wear on the motor s internal components and enhancing overall reliability, particularly in demanding conditions where constant load fluctuations occur.

This propeller is engineered with a **three-blade design**, which optimizes water flow and reduces cavitation, resulting in cleaner operation and less noise compared to older, two-blade models. The blades are meticulously contoured to minimize drag while maximizing thrust, allowing the motor to operate at peak efficiency across varying loads, whether you're trolling at low speeds, cruising at moderate planing speeds, or handling occasional heavy loads like wakeboarding or light skiing. The **right-hand rotation** is standard for Mercury outboards, ensuring compatibility with the motor s internal drive system and preventing backlash or misalignment that could lead to premature wear.

Built to withstand the harshest marine environments, the **48-61814A4** is constructed from **high-strength, corrosion-resistant stainless steel**, including a **nickel-aluminum-bronze (NAB) blade material** that resists pitting, erosion, and saltwater corrosion critical factors for longevity in saltwater applications. The propeller s **hardened and polished surfaces** further reduce friction and wear, extending its service life while maintaining consistent performance. Additionally, the **balanced design** minimizes vibration, contributing to a smoother ride and reduced stress on the motor s components, which is especially beneficial for extended hours of operation.

Whether installed on a **150 300 horsepower Mercury outboard** for a fishing boat, a **utility vessel**, or a **performance cruiser**, this propeller delivers a proven combination of power, efficiency, and durability. Its **universal compatibility** with Mercury s drive systems makes it a straightforward upgrade or replacement option for boat owners seeking to enhance their propulsion setup without sacrificing reliability. With proper maintenance such as regular cleaning, inspection for nicks or corrosion, and proper storage this propeller will continue to perform at its best, ensuring years of trouble-free operation and optimal boat handling.

### **Pros and Cons of buying a Mercury 48-61814A4 RH Boat Prop (Pitch 13, Spline 4)**

#### **Pros:**

1. **High Performance** Designed for outboard motors, this prop is optimized for speed and acceleration, making it ideal for boats that require strong thrust and efficiency.

2. **Durability** Mercury marine props are built with high-quality materials, including stainless steel or aluminum alloys, which resist corrosion and wear over time.

3. **Compatibility** The **4-spline shaft** ensures a secure fit with Mercury outboards, reducing slippage and improving power transfer.

4. **Efficient Thrust** The **pitch 13** is suitable for mid-range speed applications, balancing acceleration and top-end performance without excessive cavitation.

5. **Aftermarket Availability** Mercury props are widely available, meaning replacements, upgrades, or customizations are easier to find.

6. **Balanced for Different Loads** Works well for both light and medium-load applications, making it versatile for fishing boats, cruisers, and performance vessels.

7. **Warranty Support** Mercury products often come with manufacturer warranties, providing peace of mind against defects.

#### **Cons:**

1. **Cost** As a high-performance prop, it may be more expensive than basic or generic alternatives, especially if purchased new.

2. **Potential for Cavitation** If used in deep-V hulls or high-load conditions, a pitch 13 might cause cavitation at higher RPMs, reducing efficiency.

3. **Not Ideal for Heavy Loads** If the boat carries significant weight (e.g., large fishing gear, multiple passengers), a higher pitch (e.g., 14-16) may be more efficient.

4. **Limited Customization** Unlike some aftermarket props, this is a standard model, so adjustments (like blade angle) require purchasing a different pitch.

5. **Maintenance Requirements** Stainless steel props can develop pitting over time, and aluminum props may require periodic polishing to prevent corrosion.

6. **Potential for Wear on Shaft** If the spline fit is not perfectly aligned, it could cause premature wear on the outboard s shaft or gearcase.

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### **Conclusion**

The **Mercury 48-61814A4 RH (Pitch 13, 4-Spline)** is a well-engineered prop suitable for boats needing a balance of speed, thrust, and efficiency. It excels in mid-range applications but may not be optimal for extreme loads or deep-V hulls without further tuning. If your boat operates in moderate conditions (e.g., cruising, light fishing, or recreational use), this prop offers reliable performance and durability.

However, if your vessel frequently carries heavy loads, operates at high speeds, or has a deep-V hull, you may need a different pitch (e.g., 14-16) or a specialized prop to prevent cavitation and maximize efficiency.

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### **Recommendation**

- **Buy it if:** You need a **reliable, high-performance prop** for a **light-to-medium-load boat** (e.g., 15-25 ft fishing boat, cruiser, or performance runabout) where **acceleration and mid-range speed** are priorities.

- **Consider alternatives if:**

- Your boat frequently operates at **high speeds or heavy loads** (opt for a higher pitch).

- You have a **deep-V hull** (may require a prop with a different blade design to reduce cavitation).

- You want **custom tuning** (aftermarket props with adjustable blades could be more versatile).

- **Verify fitment** Ensure the **4-spline shaft** matches your outboard model to avoid damage or slippage.

- **Check condition** If buying used, inspect for **pitting, cracks, or uneven wear** that could affect performance.

For most standard outboard applications, this prop is a **solid, dependable choice** with minimal drawbacks if used appropriately.

Details:

Mercury RH Aluminum Boat Prop 11 x Pitch 13 Spline 48-61814A4 61814. Buyer Pays Return Shipping.

part #: 4861814a4 price

  • $50.00

specifications propboapar:

  • for makes: Mercury
  • for years: 2011-2013
  • mpn: 48-61814a4
  • part type: Aluminum Prop
  • propeller rotation: Standard

shipping propboapar:

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

seller propboapar:

  • city: Gravois Mills, Missouri
  • rating: 99.6%
  • # reviews: 545

offer propboapar:

  • quantity: 1
  • availability: In Stock
  • sold: 0
  • started: February 18, 2026
  • options: Ship-to-home
  • best offers: True

payments propboapar:

  • other
  • credit card: Diners-club
  • wallet: Apple-pay

returns propboapar:

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

general propboapar:

  • Parts Accessories > Boat Parts > Propellers
  • condition: Used
for makes: mercury, for years: 2011-2013, part type: aluminum prop, propeller rotation: standard,
category: boat parts > propellers, sku: 12158514991526793,
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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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