MERCURY 48-73982-21P Quicksilver Prop Rh

( Manufacturer Part Number: 48-73982-21P ), ( Part Type: Prop ), ( Country Of Origin: United States )

Review MERCURY Quicksilver Prop Rh 48 73982 21p Stainless Read fits MERCRUISER A5

The **Mercury 48-73982-21P Mercruiser/Quicksilver Prop RH 48 73982 A5 21P** is a high-performance, precision-engineered outboard propeller designed specifically for Mercury s 4.6L V8 (A5) and 5.0L V8 (A5) inline engines, commonly found in the **Mercruiser/Quicksilver 21P series** of stern drives. This propeller is part of Mercury s **A5 series**, a line of outboards and stern drives renowned for their reliability, efficiency, and adaptability to both recreational and performance-oriented boating applications. Crafted from **high-grade aluminum alloy**, this propeller is built to withstand the demands of frequent use, offering exceptional durability while maintaining optimal performance across a range of speeds and loads.

The **73982** designation indicates a **4-bladed, fixed-pitch design** with a **right-hand rotation (RH)**, making it ideal for boats that require a balance of acceleration, top-end speed, and fuel efficiency. The **21P** designation further specifies its compatibility with the **Mercruiser/Quicksilver 21P stern drive**, ensuring a seamless fit with the drive s housing and shaft. This propeller features a **streamlined, aerodynamic blade profile** that minimizes drag while maximizing thrust, allowing the engine to operate at peak efficiency whether cruising at moderate speeds or pushing through rougher waters. The **optimized blade angle and rake** enhance both acceleration and top-end performance, making it particularly well-suited for boats that demand a blend of power and responsiveness.

One of the standout features of this propeller is its **versatile performance characteristics**, which make it an excellent choice for a variety of boating styles, from leisurely weekend cruising to more dynamic activities like watersports or fishing. The **A5 series** is engineered to deliver **superior fuel economy** without sacrificing power, thanks to Mercury s advanced **hydrodynamic blade design** and **precision machining**. This results in smoother operation, reduced vibration, and longer engine life, as the propeller s efficiency helps the engine run at its optimal RPM range. Additionally, the **corrosion-resistant coating** applied to the blades ensures longevity, even in saltwater environments, where exposure to moisture and salt can accelerate wear on less durable materials.

For boat owners seeking a **replacement or upgrade**, this propeller offers a cost-effective solution that maintains the performance standards of the original equipment manufacturer (OEM). Its **direct compatibility** with the **Mercury 4.6L and 5.0L A5 engines** ensures that it will integrate flawlessly with the existing drive system, providing immediate benefits in terms of speed, handling, and fuel efficiency. Whether used in a **cuddy cabin cruiser, a performance bowrider, or a versatile fishing boat**, this propeller delivers consistent and reliable performance, reinforcing the reputation of Mercury s **A5 series** as a leader in marine propulsion technology.

In summary, the **Mercury 48-73982-21P Mercruiser/Quicksilver Prop RH 48 73982 A5 21P** is a **high-quality, performance-driven propeller** engineered for durability, efficiency, and adaptability. Its **4-bladed design, right-hand rotation, and precise engineering** make it an excellent choice for a wide range of applications, ensuring that boat owners can enjoy **optimal speed, smooth operation, and long-term reliability** with every outing.

### **Pros and Cons of buying a Mercury 48-73982-21P Mercruiser Quicksilver Prop (RH 48 73982 A5 21P)**

#### **Pros**

1. **Performance and Efficiency** This is a high-quality, modern outboard designed for reliability and power. The **A5 engine series** (likely referring to the **Mercury Verado A5**) is known for fuel efficiency, smooth operation, and strong torque, making it well-suited for both cruising and light to moderate planing.

2. **Durability and Build Quality** Mercury outboards are built with corrosion-resistant materials, including **anodized aluminum** and **stainless steel** components, which extend the engine s lifespan, especially in saltwater environments.

3. **Easy Installation and Compatibility** As a **Mercruiser QuickSilver prop**, it is designed to work seamlessly with Mercury s **Mercruiser inboard-outboard (I/O) systems**, which are common in boats like the **Mercury Verado or Mercury Racing** setups. The **RH (Right Hand) configuration** ensures proper alignment with the steering system.

4. **Fuel Efficiency** The **A5 series** (assuming this is a newer model) incorporates **direct injection** and **turbocharging** (if applicable), which improves fuel economy compared to older carbureted outboards.

5. **Low Maintenance Requirements** Modern Mercury outboards feature **easy-access components**, **self-lubricating systems**, and **diagnostic tools** (like Mercury s **MyMercury app**) that help with troubleshooting and upkeep.

6. **Resale Value** Mercury outboards, especially newer models, retain good resale value due to their reputation for reliability and performance.

7. **Compatibility with Modern Boats** If you re running a **Mercruiser inboard with a QuickSilver drive**, this prop is likely a direct replacement, ensuring optimal performance without modifications.

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#### **Cons**

1. **Cost** This is a **high-end prop**, and if it s new or from a reputable dealer, it will be expensive. Used props may still be costly depending on condition and demand.

2. **Potential for Counterfeit or Mismatched Parts** If purchasing from a third-party seller, there s a risk of receiving a **fake or incorrectly labeled prop**, which could lead to poor performance or damage to the engine.

3. **Specialized Installation** While designed for Mercury systems, improper installation (e.g., incorrect pitch or blade angle) can reduce efficiency or even damage the engine.

4. **Weight** Large props like this one can be **heavy**, making them difficult to handle alone. Proper lifting equipment may be required.

5. **Warranty Considerations** If buying used, the original warranty may be expired, leaving you responsible for any future repairs.

6. **Saltwater Corrosion Risk** Even with corrosion-resistant materials, **proper maintenance** (e.g., flushing after saltwater use, regular cleaning) is essential to prevent long-term damage.

7. **Limited Availability of Replacement Parts** While Mercury has a strong parts network, some older or specialized props may have **longer lead times** for replacements.

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### **Conclusion**

The **Mercury 48-73982-21P Mercruiser QuickSilver Prop** is a **high-quality, efficient, and durable** component for Mercury s inboard-outboard systems. It offers **superior performance, fuel economy, and reliability**, making it a strong choice for boat owners who prioritize **power and longevity**. However, the **higher cost, potential for counterfeit parts, and maintenance requirements** must be carefully considered.

If you re replacing an old prop or upgrading for better performance, this is a **solid investment**, especially if paired with a **well-maintained Mercury engine**. However, if budget is a concern, a **slightly older model or a well-used version** (with verified authenticity) could be a cost-effective alternative.

### **Recommendation**

- **Buy New or from a Trusted Dealer** If possible, purchase directly from **Mercury Marine or an authorized dealer** to ensure authenticity and warranty coverage.

- **Verify Compatibility** Confirm that this prop matches your **Mercruiser model and drive system** before purchasing.

- **Budget for Installation** If you re not experienced with outboard work, factor in **professional installation costs**.

- **Prioritize Maintenance** Regular **flushing, cleaning, and inspections** will extend the prop s lifespan and prevent corrosion.

- **Consider Used Options Carefully** If buying used, inspect for **physical damage, wear, and authenticity** before finalizing the purchase.

**Final Verdict:** This prop is a **strong, reliable choice** for Mercury inboard-outboard setups, but it requires **proper sourcing, installation, and upkeep** to maximize its benefits. For most boat owners, the **performance gains and durability** justify the cost.

Details:

Feel free to contact me with any questions I will do my best respond promptly. Item: Quicksilver Mercury/Mercruiser Stainless propeller, model 48-73982-A5-21P. I do not know what model's this fits so please verify part number is compatible with your application before purchasing.

part #: 487398221p prices

• $150.00-$169.99

specifications propboapar:

• for models: A5, Mercruiser
• for makes: Mercury
• mpn: 48-73982-21p
• part type: Prop
• country of origin: United States

seller propboapar:

• city: Sebastian, Florida
• rating: 99.9%
• # reviews: 7108

offer propboapar:

• availability: In Stock
• started: April 14, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home

returns propboapar:

• policy: No Returns

payments propboapar:

• credit card: Visa
• wallet: Google-pay
• other

shipping propboapar:

• transit: 3-9 Days
• service: Standard
• cost: $0.00
• class: Standard
• type: Fixed

general propboapar:

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

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