OMC 314813 Inner Exhaust Tube

( Brand: Omc ), ( Manufacturer Part Number: 314813 ), ( Part Type: Hp Exhaust Tube ), ( Year: 1969-77 ), ( Country Of Origin: United States )

Review OMC Johnson Evinrude Hp Inner Exhaust Tube fits 1969–1977

The **OMC 314813 Johnson Evinrude HP Inner Exhaust Tube** is a meticulously crafted, high-performance replacement component designed to restore optimal functionality and efficiency to Evinrude HP outboard motors manufactured between 1969 and 1977. Engineered to precise specifications, this inner exhaust tube is a direct-fit solution, ensuring seamless integration with the original engine assembly without the need for modifications. Constructed from durable, heat-resistant materials, it is built to withstand the intense thermal and mechanical stresses of high-performance operation, delivering reliable performance in both freshwater and saltwater environments. The tube s design incorporates smooth, aerodynamic contours that minimize turbulence and maximize exhaust flow, contributing to improved engine cooling and power output. Whether used for recreational boating, fishing, or light-duty work applications, this inner exhaust tube enhances the longevity of the motor by reducing wear on critical components and preventing premature failure. Its compatibility with classic Evinrude HP models makes it an essential part for restorers, collectors, and enthusiasts seeking to preserve the performance and heritage of these iconic outboards. With its robust construction and precision engineering, the OMC 314813 ensures that your engine operates at peak efficiency, delivering the power and reliability expected from a Johnson Evinrude HP.

### **Pros and Cons of buying a OMC 314813 Johnson/Evinrude HP (1969 1977) Inner Exhaust Tube**

1. **Compatibility and Fit:** This part is specifically designed for Johnson/Evinrude outboard motors from 1969 to 1977, ensuring a proper fit without modifications. It is a direct replacement for the inner exhaust tube, which is a critical component for engine performance and cooling.

2. **Reliability and Durability:** The inner exhaust tube is a high-stress part that carries exhaust gases from the engine to the muffler. A genuine or high-quality aftermarket replacement ensures long-term reliability, reducing the risk of leaks, cracks, or exhaust system failures.

3. **Performance Maintenance:** A functional inner exhaust tube is essential for proper exhaust flow, which affects engine efficiency, cooling, and power output. Replacing a worn or damaged tube prevents backpressure issues that could reduce horsepower or cause overheating.

4. **Prevents Further Damage:** A failing inner exhaust tube can lead to exhaust leaks, which may damage surrounding components (such as the muffler, gaskets, or even the engine itself). Replacing it proactively avoids costly repairs down the line.

5. **Ease of Installation:** Since this is a direct-fit part, installation is relatively straightforward for someone with basic mechanical skills. It typically requires removing the old tube, cleaning the area, and securing the new one with clamps or bolts.

6. **Cost-Effective:** Compared to the potential cost of repairing engine damage caused by a failing exhaust system, replacing the inner exhaust tube is a relatively inexpensive fix. Prices vary, but it is generally affordable for a critical component.

7. **Availability of Parts:** As a classic outboard motor part, this tube is still available through marine parts suppliers, dealerships, or online retailers. While not as widely stocked as newer models, it is not extremely difficult to source.

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1. **Age and Wear of Surrounding Components:** If the motor is old, other parts (such as gaskets, clamps, or the muffler) may also be worn out. Replacing just the inner exhaust tube might not fully resolve exhaust-related issues if these components are failing as well.

2. **Potential for Counterfeit or Low-Quality Parts:** Some aftermarket or online sellers may offer knockoff or substandard replacements. Buying from a reputable supplier (such as a dealership, marine parts specialist, or trusted online retailer) helps mitigate this risk but adds to the cost.

3. **Installation Challenges:** While the part itself is straightforward, if the motor has been poorly maintained or is heavily corroded, installation could be more difficult. Rust, seized clamps, or damaged mounting points may require additional effort or tools to address.

4. **Limited Longevity of the Motor Itself:** If the outboard motor is very old (e.g., 1969 1977), other systems (such as the carburetor, ignition, or cooling system) may be nearing the end of their service life. Replacing the inner exhaust tube may provide temporary relief but could lead to further issues if the motor is not otherwise maintained.

5. **Environmental and Corrosion Factors:** Older motors are more susceptible to corrosion, especially if stored improperly. The inner exhaust tube may be damaged by rust or debris, requiring additional cleaning or preparation before installation.

6. **Skill Dependency:** While installation is manageable for DIYers, those without mechanical experience may struggle. Improper installation (e.g., loose clamps, misalignment) could lead to leaks or performance issues.

7. **Part Availability Over Time:** While this part is still available, supply chains for vintage marine parts can be inconsistent. If the motor is not used frequently, finding a replacement in the future may become more difficult.

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The OMC 314813 Johnson/Evinrude HP inner exhaust tube is a **necessary and cost-effective replacement** for maintaining the performance and reliability of a 1969 1977 outboard motor. The benefits of improved exhaust flow, prevention of further damage, and ease of installation outweigh the minor drawbacks, provided the part is sourced from a trusted supplier and installed correctly.

However, the decision to replace it should be part of a broader assessment of the motor s overall condition. If the motor is old and other components are failing, a full evaluation (or even a replacement motor) may be more prudent in the long run. For a motor that is otherwise in good shape, this replacement is a **practical and wise investment** to avoid more significant issues.

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1. **Source the Part Carefully:** Purchase the inner exhaust tube from a reputable dealer or supplier (e.g., Johnson Outboards authorized parts center, marine specialty stores, or well-reviewed online retailers). Avoid cheap knockoffs that may fail prematurely.

2. **Inspect Surrounding Components:** Before installation, check the condition of the muffler, clamps, gaskets, and mounting points. Replace any worn or damaged parts to ensure a proper seal and long-term reliability.

3. **Follow Installation Guidelines:** Use the correct tools and techniques to secure the tube properly. Ensure clamps are tight, gaskets are intact, and the tube is aligned correctly to prevent leaks.

4. **Consider Professional Help if Needed:** If the motor is heavily corroded or the installation proves difficult, consult a marine mechanic to avoid damaging the system further.

5. **Maintain the Motor Regularly:** After replacement, follow a maintenance schedule to clean the exhaust system, check for leaks, and address any other signs of wear. This extends the life of the part and the motor as a whole.

6. **Evaluate Long-Term Viability:** If the motor is frequently used or shows signs of aging in other areas, weigh the cost of repairs against the potential value of the boat. In some cases, upgrading to a newer, more reliable outboard may be the better long-term solution.

**Final Verdict:** For a 1969 1977 Johnson/Evinrude HP motor in decent condition, replacing the inner exhaust tube is a **smart and necessary upgrade** to maintain performance and prevent failures. Proceed with caution, prioritize quality, and address any accompanying wear to maximize the part s effectiveness.

Details:

No holes, clean and ready to go. Inner exhaust tube for Evinrude outboard motor.

part #: 314813 prices

• $10.99-$19.58

specifications ouboaen:

• for makes: Johnson, Evinrude, Omc
• for years: 1969-1977
• brand: Omc
• mpn: 314813
• part type: Hp Exhaust Tube
• year: 1969-77
• country of origin: United States

payments ouboaen:

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

general ouboaen:

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

shipping ouboaen:

• carrier: USPS
• service: USPS Ground Advantage
• type: Calculated
• transit: 5-11 Days
• class: Standard
• cost: $8.06

offer ouboaen:

• availability: In Stock
• started: May 31, 2026
• options: Ship-to-home
• sold: 0
• best offers: True
• quantity: 1

seller ouboaen:

• city: Turner, Michigan
• rating: 96.3%
• # reviews: 25

returns ouboaen:

• policy: No Returns

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