OMC 911831 Exhaust Pipe Seal Freight Omc/evinrude/johnson

( Brand: Omc ), ( Manufacturer Part Number: 911831 ), ( Part Type: Pipe Seal Exhaust ), ( Country Of Origin: United States )

Review OMC Evinrude Johnson Omc/evinrude/johnson #911831 Exhaust Pipe Seal Free Freight

The **OMC/Evinrude/Johnson 911831 Exhaust Pipe Seal** is a precision-engineered, high-performance gasket designed specifically for use in Evinrude, Johnson, and OMC outboard motors, ensuring a secure and leak-free seal between critical exhaust components. Crafted from durable, heat-resistant materials, this seal is engineered to withstand the intense thermal and mechanical stresses encountered in marine applications, including high-pressure exhaust gases and constant exposure to saltwater, moisture, and vibration. Its robust construction prevents exhaust leaks, which can compromise engine efficiency, reduce power output, and lead to costly internal damage over time. The seal features a tight, interference-fit design that maintains compression even under fluctuating operating conditions, making it ideal for both new installations and reliable replacements in older engines. Whether used in two-stroke or four-stroke outboards, this seal helps preserve the integrity of the exhaust system, extending the lifespan of the motor while minimizing the risk of performance degradation. Built to meet the exacting standards of marine propulsion systems, the **911831 Exhaust Pipe Seal** is a critical component for maintaining optimal engine function and ensuring a smooth, leak-free operation in demanding marine environments.

### **Pros and Cons of buying a OMC/Evinrude/Johnson 911831 Exhaust Pipe Seal (Freight)**

1. **Compatibility** This seal is specifically designed for the OMC/Evinrude/Johnson 911831 engine family, ensuring a proper fit and preventing leaks or damage.

2. **Durability** Made from high-quality materials (likely silicone or rubber with reinforced backing), it is built to withstand heat, vibration, and corrosion, extending the life of the exhaust system.

3. **Easy Installation** Designed as a direct replacement, it should fit without extensive modifications, reducing labor time and potential errors.

4. **Prevents Leaks** A failing exhaust seal can cause exhaust gases to escape, leading to poor performance, reduced fuel efficiency, and potential engine damage. This seal helps maintain a proper seal.

5. **Cost-Effective** Replacing a worn seal is far cheaper than dealing with exhaust system failures, catalytic converter damage, or engine backpressure issues.

6. **Noise Reduction** A properly sealed exhaust system minimizes backfiring and loud exhaust noises, improving the boat s overall operation.

7. **Prevents Contamination** Ensures exhaust gases stay contained within the system, preventing oil or coolant contamination from exhaust fumes.

1. **Potential Wear Over Time** Even high-quality seals degrade due to heat, vibration, and exposure to saltwater or chemicals, requiring eventual replacement.

2. **Installation Challenges** If the existing seal is stuck or the gasket surface is corroded, removal and installation may require careful prying or cleaning, which could damage surrounding components.

3. **Quality Variability** Some aftermarket seals may not match the original equipment manufacturer s (OEM) durability, especially if purchased from lesser-known suppliers.

4. **Limited Lifespan** While durable, seals typically last **3 5 years** or **50 100 hours of use**, depending on operating conditions. Frequent high-load use (e.g., towing, heavy loads) may shorten their lifespan.

5. **Replacement Frequency** If the boat is used frequently or in harsh conditions, the seal may need replacement more often than expected, adding to long-term maintenance costs.

6. **Misalignment Risk** If not installed correctly, the seal could fail prematurely or allow leaks, requiring rework.

7. **Limited Availability** Depending on the region, finding the exact part number (911831) may require ordering from specialty marine suppliers, which could introduce delays.

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### **Conclusion**

The **OMC/Evinrude/Johnson 911831 exhaust pipe seal** is a **necessary and cost-effective** component for maintaining engine performance, preventing leaks, and avoiding costly repairs. Its **high compatibility, durability, and ease of installation** make it a strong choice for boat owners who prioritize reliability. However, **wear over time, potential installation challenges, and the need for periodic replacement** are factors to consider.

If the seal is **genuine OEM or from a reputable marine supplier**, it is a **wise investment** to prevent exhaust system failures. For boats used **heavily or in harsh conditions**, monitoring the seal s condition and replacing it **proactively** (rather than waiting for failure) will save money in the long run.

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### **Recommendation**

- You notice **exhaust leaks, backfiring, or reduced performance**.

- The seal is **visible and visibly worn or cracked**.

- You want to **prevent future exhaust system damage**.

- You purchase it from a **trusted marine parts supplier** (e.g., MarineMax, Sea-Doo/Johnson dealers, or reputable online retailers).

- **Consider alternatives** (e.g., universal exhaust seals) only if the **exact part is unavailable**, but ensure they meet **heat and vibration resistance** standards.

- **Replace it promptly** if symptoms of a failing seal (e.g., **exhaust smoke, strange noises, or reduced power**) appear, as delayed replacement can lead to **more extensive (and expensive) repairs**.

For most boat owners, **this seal is a straightforward, high-value purchase** that ensures long-term engine health.

Details:

Part location: Box #15. Part is new, old stock.

part #: 911831 prices

• $14.95-$23.00

specifications ouboaen:

• for makes: Evinrude, Johnson, Omc
• brand: Omc
• mpn: 911831
• part type: Pipe Seal Exhaust
• country of origin: United States

offer ouboaen:

• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0
• started: May 4, 2026

shipping ouboaen:

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

seller ouboaen:

• rating: 100.0%
• city: Annapolis, Maryland
• # reviews: 5211

payments ouboaen:

• credit card: Mastercard
• other
• wallet: Apple-pay

returns ouboaen:

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

general ouboaen:

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

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