1. Boat Outboard Engines To Buy
  2. sku: 24001862260283861
  3. MERCURY MARINE 16-816866

MERCURY MARINE Quicksilver Stud 16-8168663 8M0034446

fits model: Mariner. make: Mercury.

16-8168663 Mercury Marine 16-816866 Mariner Quicksilver 8m0034446 Stainless Stud Oem

( Brand: Mercury Marine ), ( Manufacturer Part Number: 16-816866 ), ( Country Of Origin: United States )

Review MERCURY MARINE Quicksilver Stainless Stud Oem fits MARINER

The **Mercury Marine 16-816866 Mariner Quicksilver 8M0034446 Stud** is a high-performance, precision-engineered marine propeller designed for maximum efficiency, reliability, and durability in a wide range of boating applications. Part of Mercury Marine s renowned Quicksilver series, this propeller is meticulously crafted to deliver optimal thrust, fuel economy, and handling characteristics, making it an ideal choice for both recreational and performance-oriented vessels. Engineered with a **three-blade design**, this propeller balances power delivery and maneuverability, ensuring smooth acceleration, responsive steering, and reduced cavitation critical factors for maintaining performance in varying water conditions, from calm lakes to choppy coastal waters. The **8M0034446 stud** designation indicates a specific pitch and diameter configuration, tailored to complement engines in the 150 250 horsepower range, providing a seamless match for Mercury s outboards while maximizing efficiency across different speeds and loads.

Constructed from **high-grade, corrosion-resistant materials**, including a durable stainless steel core and a proprietary surface treatment, this propeller is built to withstand the harshest marine environments, including saltwater exposure, which can accelerate wear and corrosion in lesser-quality propellers. The **Mariner series** within the Quicksilver lineup emphasizes refined performance, featuring a **hydrodynamic blade shape** that minimizes drag and improves efficiency, resulting in better fuel economy and reduced strain on the engine. The **stud-mounted design** ensures secure attachment to the engine s shaft, preventing loosening or slippage under high loads, while the **precision-machined blades** are optimized for reduced noise and vibration, enhancing both comfort and longevity for the boat s occupants and mechanical components.

Ideal for **center console fishing boats, cruisers, and performance boats**, this propeller excels in applications where smooth operation, quick acceleration, and precise control are paramount. Whether navigating tight docks, handling sudden direction changes, or maintaining steady speeds over long distances, the **16-816866 Mariner Quicksilver** delivers consistent performance with minimal maintenance. Mercury Marine s commitment to innovation is evident in the propeller s **proprietary blade geometry**, which enhances lift and reduces cavitation, ensuring reliable operation even under demanding conditions. For boat owners seeking a propeller that combines cutting-edge engineering with rugged durability, this unit represents a superior investment in both performance and long-term reliability.

### **Pros and Cons of buying a Mercury Marine 16-816866 (Mariner Quicksilver 16HP) Outboard Motor**

#### **Pros**

1. **Reliability and Durability** Mercury Marine is a well-established brand known for producing high-quality, long-lasting outboard motors. The 16HP Quicksilver series is designed for small boats and personal watercraft, offering dependable performance for recreational use.

2. **Fuel Efficiency** At 16 horsepower, this motor is ideal for lightweight boats (e.g., canoes, kayaks, small fishing boats, or personal watercraft). It consumes less fuel than larger engines, making it cost-effective for short trips or casual boating.

3. **Lightweight and Easy to Handle** Weighing around 40 50 lbs (depending on model year), this motor is easy to transport, install, and maneuver. It s well-suited for small boats where weight is a concern.

4. **Low Maintenance** Compared to larger outboards, the 16HP Quicksilver requires minimal upkeep. It has fewer moving parts, reducing the likelihood of mechanical failures. Routine maintenance (oil changes, spark plug checks) is straightforward.

5. **Affordability** As a smaller engine, it is generally less expensive to purchase than larger outboards. Parts and repairs are also cheaper, making it a budget-friendly option for occasional boaters.

6. **Versatility** Works well on various small boats, including:

- Folding canoes

- Inflatable kayaks

- Small fishing boats

- Personal watercraft (PWCs) or trolling motors

- Pedal boats

7. **Quiet Operation** The 16HP is designed for low-noise performance, making it suitable for peaceful fishing trips or boating in noise-sensitive areas.

8. **Easy to Store and Transport** Its compact size allows for easy storage in garages, sheds, or even on the back of a truck without needing special equipment.

9. **Good for Beginners** Ideal for new boaters who want a simple, reliable motor without the complexity of larger engines.

10. **Compatibility with Trolling Motors** Some models can be paired with trolling motors for enhanced maneuverability in calm waters.

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#### **Cons**

1. **Limited Power for Larger Boats** The 16HP motor is **not** suitable for boats over 12 15 feet or heavier vessels. It lacks the torque and speed needed for larger, more powerful boats, leading to poor performance or even stalling.

2. **Speed Limitations** Top speeds are typically around **10 15 mph**, depending on boat weight and hull design. This is adequate for leisurely cruising but insufficient for high-speed activities like wakeboarding or watersports.

3. **Weather Sensitivity** Small engines like this are more affected by rough water conditions. In choppy seas, the motor may struggle to maintain steady power, and the boat may become unstable.

4. **Less Powerful in Cold Weather** Mercury outboards (like most two-stroke engines) can lose power in cold temperatures. The 16HP may require pre-warming or may not perform optimally in freezing conditions.

5. **Fuel Type Dependency** This motor likely runs on **two-stroke fuel (gasoline oil mix)**, which is less environmentally friendly than modern four-stroke engines. Some newer models may use four-stroke fuel, but older versions often require mixing oil with gasoline.

6. **Resale Value Depreciation** Like most outboards, Mercury engines lose value over time. A used 16HP motor may not retain much resale value, especially if it s an older model.

7. **Limited Aftermarket Support** While Mercury has a strong dealer network, smaller engines like this may have fewer specialized mechanics available for repairs compared to larger outboards.

8. **Noise and Vibration** Some users report that smaller two-stroke engines can be louder and vibrate more than larger four-stroke models, which may affect comfort on long trips.

9. **Not Ideal for Heavy Trolling or Fishing** While it can handle light fishing, the 16HP lacks the power needed for deep-sea fishing, heavy trolling, or pulling large loads.

10. **Potential for Fuel System Issues** Two-stroke engines are prone to carburetor or fuel line clogs if not properly maintained, which can lead to stalling or poor performance.

---

### **Conclusion**

The **Mercury Marine 16HP Quicksilver (16-816866)** is an excellent choice for **small boats, personal watercraft, or lightweight fishing vessels** where power is not a primary concern. It offers **reliability, fuel efficiency, and ease of use**, making it perfect for **recreational boating, canoeing, or kayaking**. However, it is **not suitable for larger boats, high-speed activities, or heavy-duty tasks** due to its limited horsepower.

If you need a motor for **casual boating, trolling, or a small inflatable kayak**, this engine is a **solid, cost-effective option**. For **larger boats, frequent use, or demanding conditions**, a **higher-horsepower outboard (e.g., 25HP 50HP)** would be a better investment.

---

### **Recommendation**

**Buy this motor if:**

You have a **small boat (under 12 15 feet)** and need a **reliable, low-maintenance** engine.

You primarily use it for **leisurely cruising, fishing, or kayaking** in calm waters.

You want an **affordable, easy-to-transport** option without complex maintenance.

You re on a **budget** and don t need high speeds or heavy-duty performance.

**Avoid this motor if:**

You need **high speed or power** for larger boats.

You frequently boat in **rough or cold conditions**.

You plan to use it for **heavy fishing, wakeboarding, or towing**.

You prefer **four-stroke engines** (better for emissions and longevity).

**Alternative Considerations:**

- If you need **more power**, consider a **Mercury 25HP or 40HP four-stroke** for better efficiency and performance.

- For **ultra-lightweight boats**, a **trolling motor (e.g., Minn Kota or Johnson)** may be a better fit.

- If you want **modern fuel efficiency**, look for a **four-stroke Mercury or Yamaha outboard** in the 25 50HP range.

**Final Verdict:** The **Mercury 16HP Quicksilver is a great budget-friendly motor for small boats**, but it has clear limitations for those needing more power. If your needs align with its capabilities, it s a **reliable, low-cost purchase**. Otherwise, upgrading to a slightly larger engine may be worth the investment for better performance.

Details:

Up for sale is a Mercury Marine / Mariner Quicksilver stainless stud part number 16-8168663 and supersedes to 16-8M0034446. This is a new OEM part in the factory package.

part #: 16816866 price

  • $22.99

specifications ouboaen:

  • for models: Mariner
  • for makes: Mercury
  • brand: Mercury Marine
  • mpn: 16-816866
  • country of origin: United States

offer ouboaen:

  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • quantity: 4
  • started: May 17, 2026

returns ouboaen:

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

seller ouboaen:

  • city: Mesa, Arizona
  • rating: 100.0%
  • # reviews: 13786

shipping ouboaen:

  • carrier: USPS
  • type: Fixed
  • transit: 4-9 Days
  • service: USPS Ground Advantage
  • cost: $0.00
  • class: Standard

general ouboaen:

  • condition: New
  • Boat Parts > Outboard Engines Components > Other

payments ouboaen:

  • wallet: Google-pay
  • credit card: Visa
  • other
for models: mariner, for makes: mercury, country of origin: united states,
category: boat parts > outboard engines components, sku: 24001862260283861,
Mercury Marine 16-816866 Is Similar To:
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2 offers $22.99–$22.99 USD
  • New. Offer #1 priced at $22.99 + $0.00 shipping estimate = $22.99* total. FREE SHIPPING
  • Used. Offer #2 priced at $22.99 + $8.60 shipping estimate = $31.59* total. Related Part Numbers: 16- 8168663. Condition: Used.+$8.60 shipping

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