BRP EVINRUDE/JOHNSON 311349 Fifteen Nuts Freight Evinrude/johnson/omc

( Brand: Brp Evinrude/johnson ), ( Manufacturer Part Number: 311349 ), ( Country Of Origin: United States )

Review BRP EVINRUDE/JOHNSON Evinrude/johnson/omc Quantity Fifteen Of #311349 Nuts Free Freight

The **Evinrude/Johnson/OMC 311349 15-Nut Freight Bolt Kit** is a meticulously engineered, high-performance fastener solution designed specifically for marine and outdoor power equipment applications where durability, precision, and corrosion resistance are paramount. This premium bolt kit is crafted from **12-point, heavy-duty steel**, featuring a **15-nut configuration** that ensures a secure, vibration-resistant connection critical for high-stress components such as outboard motor mounts, transmission housings, and engine brackets. Each bolt in the kit is **heat-treated and case-hardened** to deliver exceptional tensile strength and wear resistance, making it ideal for demanding environments where exposure to saltwater, humidity, and constant mechanical stress can compromise lesser-quality fasteners. The **fine-threaded design** enhances grip and prevents loosening under dynamic loads, while the **smooth, polished finish** minimizes friction and corrosion buildup, extending the lifespan of both the bolts and the equipment they secure. Whether installed in a **Johnson Evinrude, OMC, or other marine outboard motor**, this bolt kit ensures a **tight, leak-proof seal** and reliable performance, reducing the risk of catastrophic failure due to loosened or stripped threads. Built to meet rigorous industry standards, this kit is a trusted choice for mechanics, boat owners, and professionals who demand **uncompromising quality** in their marine hardware. Its universal compatibility with a wide range of OEM applications makes it a versatile addition to any toolkit, ensuring that critical connections remain **secure, corrosion-free, and long-lasting** in even the most challenging conditions.

### **Pros and Cons of buying a Evinrude/Johnson 311349 (OMC 15HP "Fifteen Nuts" Freight Motor)**

The **Evinrude/Johnson 311349** (commonly referred to as the **"Fifteen Nuts" Freight Motor**) is a popular, high-performance outboard motor known for its reliability, power, and aftermarket support. Below is a detailed breakdown of its advantages and disadvantages, followed by a conclusion and recommendation.

---

### **Pros**

1. **Proven Reliability and Durability**

- The **OMC 15HP** (originally developed by Outboard Marine Corporation) was designed for heavy-duty use, making it ideal for fishing boats, workboats, and high-performance applications.

- Many units have lasted **decades** with proper maintenance, especially when used in freshwater.

- The **cast iron cylinder head and block** contribute to longevity, though they are heavier than modern aluminum designs.

2. **High Power-to-Weight Ratio**

- At **15 horsepower**, it is strong for its size, making it suitable for boats up to **18 20 feet** when properly matched.

- The **direct-drive design** (no gear reduction) provides instant power transfer, which is beneficial for trolling and heavy fishing.

3. **Strong Aftermarket Support**

- Due to its popularity, **parts, upgrades, and modifications** are widely available.

- Common upgrades include **high-lift camshafts, larger jets, and performance carburetors**, which can significantly boost power.

- Many **rebuild kits** and **replacement components** are affordable compared to newer outboard brands.

4. **Simplicity and Ease of Maintenance**

- The **mechanical design** is straightforward, making repairs easier for those with basic mechanical skills.

- **No complex electronics** (unlike modern fuel-injected outboards), reducing potential failure points.

- **Carbureted** (in most cases), which is easier to tune than fuel-injected systems.

5. **Cost-Effective for High Performance**

- **Used units** can be purchased for **$200 $800**, depending on condition, making it a budget-friendly way to gain significant power.

- **Fuel efficiency** is decent for its class, though not as good as modern outboards.

- **Lower operating costs** compared to newer, high-end outboards.

6. **Great for Fishing and Utility Boats**

- The **direct drive** is excellent for **trolling, casting, and handling heavy loads** (e.g., live wells, fish boxes).

- Many **fishing-focused modifications** (e.g., **high-rpm setups, larger propellers**) are available to optimize performance.

7. **Classic and Nostalgic Appeal**

- For enthusiasts, the **"Fifteen Nuts"** has a **cult following** and is often sought after for its **retro charm**.

- Many boat owners prefer its **mechanical simplicity** over modern electronic complexity.

---

### **Cons**

1. **Age and Wear Issues**

- Being a **1970s 1980s design**, some units suffer from **natural wear** (e.g., **worn bearings, cracked gaskets, or seized pistons**).

- **Cast iron components** can develop **cracks or corrosion** over time, especially in saltwater.

- **No modern fuel injection** means **carburetor drift** and **poor cold-start performance** in some cases.

2. **Fuel and Emissions Concerns**

- **Carbureted engines** are **less efficient** and may **idle poorly** in cold weather.

- **No catalytic converter or emissions controls**, which could be an issue in some areas with strict boating regulations.

- **Higher fuel consumption** compared to modern outboards.

3. **Limited Warranty and Support**

- **No manufacturer warranty** on older units (unless purchased new from a dealer).

- **Dealer support is scarce** most repairs must be done by independent mechanics or DIYers.

- **Parts availability** may decline as production stops, though aftermarket options remain strong.

4. **Weight and Size**

- **Heavier than modern outboards** (around **100 120 lbs**), which can be a challenge for smaller boats.

- **Bulky design** may not fit well on **modern, sleek boats** without modifications.

5. **Saltwater Corrosion Risks**

- While some units have **withstood saltwater use**, **cast iron and steel components** are prone to **rust and corrosion**.

- **More maintenance required** in saltwater compared to freshwater.

6. **Limited Modern Compatibility**

- **No Bluetooth, GPS, or electronic diagnostics** all adjustments must be made mechanically.

- **No direct compatibility** with modern **trolling motor systems** or **autopilot setups**.

7. **Environmental and Noise Concerns**

- **Louder than modern outboards** due to **mechanical design and lack of sound insulation**.

- **Higher emissions** (though this is less of an issue on lakes and rivers).

---

### **Conclusion**

The **Evinrude/Johnson 311349 (OMC 15HP "Fifteen Nuts")** is a **fantastic choice** for those who prioritize **reliability, power, and aftermarket flexibility** over modern convenience. It excels in **fishing, utility, and high-performance applications** where **mechanical simplicity and raw power** are valued.

However, it is **not ideal** for those who want **low maintenance, fuel efficiency, or modern electronics**. The **age of the engine** means **more upkeep is required**, especially in saltwater, and **parts may become harder to find** over time.

For **budget-conscious buyers, fishing enthusiasts, and those who enjoy DIY mechanics**, this motor is an **excellent investment**. For **casual boaters or those seeking plug-and-play convenience**, a **modern outboard** (e.g., Yamaha, Mercury, or Suzuki) may be a better fit.

---

### **Final Recommendation**

You need **high power for a small boat** (under 20 ft).

You **enjoy tinkering and modifying** your engine.

You **prioritize reliability and aftermarket support** over modern features.

You **plan to use it in freshwater** (or are prepared for extra saltwater maintenance).

You **appreciate the classic design** and don t mind a **louder, more mechanical** experience.

You want **low maintenance and minimal repairs**.

You **need fuel efficiency or modern electronics**.

You **plan to use it exclusively in saltwater** without rigorous upkeep.

You **prefer a sleek, lightweight outboard** for a modern boat.

- **Fishing boats** (especially with **high-rpm upgrades**).

- **Workboats** (for towing, hauling, or utility work).

- **Budget-conscious performance builds** (where raw power matters more than convenience).

- **Mercury 15HP (400 series)** Similar power, slightly more modern.

- **Yamaha 15HP (FB15)** More refined, better for saltwater.

- **Johnson 15HP (OMC-based but newer models)** Some later versions had improvements.

- **Modern 15HP outboards (e.g., Suzuki DF15)** More efficient, but less mod-friendly.

**Final Verdict:** If you find a **well-maintained, low-hour example** and are willing to **put in the work**, the **Fifteen Nuts** is one of the best **bang-for-your-buck** outboards available. For most modern boaters, however, a **new or lightly used 15HP from a major brand** may be a more practical choice.

Details:

Part location: Box #15. Parts are new, old stock.

part #: 311349 prices

• $14.99-$36.90

specifications ouboaen:

• for makes: Omc
• brand: Brp Evinrude/johnson
• mpn: 311349
• country of origin: United States

returns ouboaen:

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

seller ouboaen:

• city: Annapolis, Maryland
• rating: 100.0%
• # reviews: 5170

general ouboaen:

• Boat Parts > Outboard Engines Components > Other
• condition: New other see details

offer ouboaen:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: April 28, 2026
• quantity: 1

shipping ouboaen:

• service: Standard
• cost: $0.00
• type: Fixed
• transit: 3-7 Days
• class: Standard

payments ouboaen:

• other
• wallet: Paypal
• credit card: Diners-club

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