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  3. MERCURY 48-8235934A47

MERCURY 48-8235934A47 Blade Rh Propeller Pitch 48-825934A47 13-3/4

fits model: Ss, Trophy. make: Mercury. year: 2021.

48-8235934a47 Mercury 48-825934a47 Trophy Plus 4 Blade Rh Ss Propeller 13-3/4 X 21 Pitch

( Manufacturer Part Number: 48-8235934A47 ), ( Part Type: Blade Propeller )

Review MERCURY Plus Blade Rh Propeller 13-3/4 Pitch fits TROPHY SS 2021

The **Mercury 48-8235934A47 (48-825934A47) Trophy Blade RH Propeller**, a precision-engineered propeller designed for high-performance outboard motors, represents the pinnacle of marine propulsion technology. Crafted from high-grade aluminum alloy, this propeller features a **13 3/4-inch pitch** and a **21-inch diameter**, striking an optimal balance between speed, efficiency, and power delivery for boats ranging from sportfishing vessels to high-speed cruisers. The **Trophy Blade** series is renowned for its aerodynamic design, which minimizes cavitation and drag while maximizing thrust, ensuring smoother acceleration, reduced fuel consumption, and enhanced overall performance. The right-hand (RH) rotation is engineered to complement Mercury s outboard motor systems, optimizing torque distribution for seamless power transfer from the engine to the water. With its **three-blade configuration**, this propeller delivers a refined blend of speed and control, making it ideal for applications where both efficiency and responsiveness are critical. The durable construction and precision machining ensure longevity, even under demanding conditions, while the sleek, streamlined blades reduce noise and vibration, enhancing both comfort and handling. Whether deployed on a fast-paced fishing boat or a performance cruiser, this propeller exemplifies Mercury s commitment to innovation, reliability, and cutting-edge marine engineering.

### **Pros and Cons of buying a Mercury 48-8235934A47 (Trophy Blade RH Propeller, 13 3/4" Pitch, 21")**

#### **Pros:**

1. **Performance Optimization for Mercury Outboards**

- This propeller is specifically designed for Mercury 48 HP outboards, ensuring optimal power transfer and efficiency. It is engineered to complement the engine s power band, improving acceleration, top-end speed, and overall handling.

2. **Trophy Blade Design**

- The Trophy Blade design features a unique blade shape that reduces cavitation, improves fuel efficiency, and enhances smoothness at higher speeds. This makes it ideal for both cruising and planing applications.

3. **Right-Hand Propeller (RH)**

- Since this is a right-hand propeller, it is correctly matched for right-side engine mounts, ensuring proper rotation and reducing strain on the engine and transmission.

4. **Durability and Material Quality**

- Mercury propellers are typically made from high-strength stainless steel, which resists corrosion and wear over time. This propeller is built to last with minimal maintenance.

5. **Compatibility with Common Boats**

- The 13 3/4" pitch and 21" diameter are standard sizes for mid-sized boats (e.g., 16 20 ft fishing boats, cruisers, or utility boats). It is a versatile choice for a wide range of applications.

6. **Easier to Find Replacements**

- Being a widely used Mercury propeller, replacement parts, repairs, and accessories are readily available through dealers and online retailers.

7. **Good for Both Fishing and Cruising**

- The pitch (21") and blade design balance speed and torque, making it suitable for both leisurely cruising and active fishing where quick acceleration and maneuverability are needed.

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#### **Cons:**

1. **Potential for Wear Over Time**

- Like all propellers, this one will experience wear from debris, corrosion, or improper use (e.g., running aground). Regular inspections and maintenance are required to prevent damage.

2. **Cost Compared to Generic Brands**

- Mercury propellers are premium-priced compared to aftermarket or generic brands. While they offer better performance, they may not be the most budget-friendly option.

3. **Limited to Mercury Engines**

- This propeller is optimized for Mercury 48 HP outboards. Using it on a different engine (e.g., Yamaha, Suzuki, or Evinrude) may not yield the same performance benefits and could even cause issues.

4. **Pitch May Not Suit All Loads**

- The 21" pitch is a moderate choice, but if the boat carries heavy loads (e.g., deep-sea fishing gear, multiple passengers, or heavy trailers), a lower pitch (e.g., 18") might provide better acceleration. Conversely, if the boat is lightly loaded, a higher pitch (e.g., 24") could improve top speed.

5. **Potential for Cavitation at High Speeds**

- While the Trophy Blade design reduces cavitation, some boats may still experience it at extreme speeds or under heavy load. This can cause noise and reduced efficiency.

6. **Installation Requires Care**

- Improper installation (e.g., incorrect torque on the nut, misalignment) can lead to vibration or premature wear. This propeller should be installed by a professional if the user lacks experience.

7. **Replacement Parts May Be Expensive**

- If the propeller sustains damage (e.g., bent blades, cracked shaft), replacement parts or repairs can be costly compared to cheaper alternatives.

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### **Conclusion:**

The **Mercury 48-8235934A47 Trophy Blade RH Propeller (13 3/4" pitch, 21")** is a well-engineered, high-performance propeller designed specifically for Mercury 48 HP outboards. It offers superior handling, fuel efficiency, and durability compared to generic propellers, making it an excellent choice for boats where performance and reliability are priorities. However, its premium cost and specific compatibility with Mercury engines may not make it the best option for budget-conscious buyers or those with non-Mercury outboards.

For most **16 20 ft fishing boats, cruisers, or utility boats** running a Mercury 48 HP engine, this propeller provides a strong balance of speed, acceleration, and smooth operation. If the boat s typical load or intended use (e.g., heavy fishing, high-speed cruising) differs significantly, testing a slightly adjusted pitch (e.g., 18" or 24") may yield better results.

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### **Recommendation:** - **Buy this propeller if:**

- You have a **Mercury 48 HP outboard** and want optimal performance.

- Your boat is **moderately loaded** (e.g., fishing trips with gear, light cruising).

- You prioritize **durability, smooth operation, and fuel efficiency** over cost savings.

- You plan to keep the boat long-term and want a reliable, high-quality propeller.

- **Consider alternatives if:**

- You are on a **tight budget** look for aftermarket propellers (e.g., **Propeller Dynamics, Aqua Prop**) that offer similar performance at a lower cost.

- Your boat s load is **heavily weighted** (e.g., deep-sea fishing, multiple passengers) test a **lower pitch (18")** for better acceleration.

- You have a **non-Mercury engine** this propeller will not be as effective, and a brand-specific propeller (e.g., Yamaha, Suzuki) is recommended.

- You frequently run the boat in **abrasive conditions** (e.g., shallow waters with rocks) consider a **harder stainless steel propeller** for extra durability.

**Final Verdict:** For the right application, this is a **strong, reliable choice** that enhances the performance of a Mercury 48 HP outboard. However, weigh the cost against your boat s specific needs before purchasing.

Details:

Mercury 48-825934A47 Trophy Plus RH SS Propeller 13-3/4 X 21, with hub kit.

specifications propboapar:

  • for models: Ss, Trophy
  • for makes: Mercury
  • for years: 2021
  • mpn: 48-8235934a47
  • part type: Blade Propeller

offer propboapar:

  • sold: 0
  • availability: In Stock
  • options: Ship-to-home
  • started: April 7, 2026
  • quantity: 1

returns propboapar:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days

shipping propboapar:

  • transit: 4-10 Days
  • carrier: FedEx
  • class: Standard, Expedited, One-day
  • cost: $28.56
  • type: Calculated
  • service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight

general propboapar:

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

seller propboapar:

  • # reviews: 603
  • city: DeLand, Florida
  • rating: 100.0%

payments propboapar:

  • credit card: Discover
  • wallet: Google-pay
  • other
for models: ss, trophy, for makes: mercury, for years: 2021, part type: blade propeller,
category: boat parts > propellers, sku: 12376899708090723,
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