JOHNSON EVINRUDE OMC 0391170 Standard Ring Set

( Brand: Johnson Evinrude Omc ), ( Manufacturer Part Number: 0391170 ), ( Part Type: Ring )

Review JOHNSON EVINRUDE OMC Genuine Oem Standard Ring Set Rings

The **Johnson Evinrude OMC 0391170 (391170) Standard Ring Set** is a meticulously engineered, high-performance component designed to enhance the reliability, efficiency, and longevity of Evinrude outboard motors, particularly those in the 150 to 200 horsepower range. This premium ring set is a critical part of the engine s internal combustion system, ensuring optimal sealing between the piston and cylinder walls to prevent oil leakage, reduce friction, and maintain peak compression. Crafted from Johnson s proprietary materials, these rings are precision-machined to exacting tolerances, delivering a perfect balance between durability and performance. The set includes a combination of compression rings and oil control rings, each serving a distinct yet complementary role in preserving engine integrity. The compression rings are engineered to withstand the intense heat and pressure generated during combustion, while the oil control rings work diligently to minimize oil consumption and prevent excessive buildup on the cylinder walls, thereby reducing wear and improving fuel efficiency. Ideal for both new installations and professional overhauls, this ring set is a trusted choice for marine mechanics and DIY enthusiasts seeking to restore or upgrade their Evinrude outboard s power and reliability. Its compatibility with the 391170 engine series ensures a seamless fit, allowing for effortless installation and immediate performance benefits. Whether used in recreational boats, fishing vessels, or performance cruisers, this ring set exemplifies Johnson s commitment to quality and innovation, providing a dependable solution for maintaining the heart of your outboard motor.

### **Pros and Cons of buying a Johnson/Evinrude OMC 0391170 (391170) Standard Ring Set**

1. **Compatibility** This ring set is designed specifically for Johnson/Evinrude OMC outboards, ensuring a proper fit and optimal performance. It is commonly used for models like the E-TEC and EFI engines, making it a reliable choice for those needing replacements.

2. **Durability** Made from high-quality materials, these rings are built to withstand the wear and tear of engine operation, reducing the risk of premature failure and extending the life of the engine.

3. **Performance Enhancement** Properly fitted piston rings improve engine compression, fuel efficiency, and power output. If the original rings were worn, replacing them can restore the engine to near-new performance levels.

4. **Cost-Effective Solution** Compared to full engine replacements or major overhauls, purchasing and installing a new ring set is a relatively inexpensive way to address compression issues, oil consumption, or rough running.

5. **Easy Installation** Designed for straightforward replacement, this kit typically includes clear instructions and may require only basic tools, making it accessible for DIY mechanics or professionals.

6. **Widely Available** As a standard part for many Johnson/Evinrude models, this ring set is easy to source from marine supply stores, online retailers, or directly from OMC dealers.

7. **Preventative Maintenance** Installing new rings as part of routine maintenance can prevent costly breakdowns, especially in high-hour engines or those used in demanding conditions.

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1. **Skill Dependency** While the installation is manageable for experienced DIYers, improper handling (e.g., cross-threading, incorrect gapping, or improper seating) can lead to engine damage or reduced performance. If unsure, professional installation is recommended.

2. **Time-Consuming Process** Removing and reinstalling piston rings requires disassembling parts of the engine, which can take several hours, especially for those unfamiliar with the procedure.

3. **Potential for Contamination** If the engine is not thoroughly cleaned during the process, debris or old carbon deposits can interfere with the new rings, leading to premature wear or failure.

4. **Additional Costs** Beyond the ring set itself, you may need to purchase gaskets, seals, or other consumables (e.g., piston ring gap tools, sealant) to ensure a proper job. Labor costs also apply if hiring a professional.

5. **Wear on Other Components** If the engine has significant internal wear (e.g., scored cylinders, worn crankshafts, or damaged bearings), replacing just the rings may not fully resolve performance issues. A full engine inspection is advisable.

6. **Limited Lifespan** While high-quality, piston rings are not indestructible. Their lifespan depends on engine conditions, fuel quality, and maintenance. In high-mileage or poorly maintained engines, they may need replacement sooner than expected.

7. **Brand-Specific Fit** Though widely compatible, there is a risk of purchasing a counterfeit or mismatched part. Always verify the authenticity and part number to avoid compatibility issues.

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The **Johnson/Evinrude OMC 0391170 (391170) Standard Ring Set** is a practical and cost-effective solution for restoring engine performance, improving fuel efficiency, and preventing major failures in compatible outboards. Its durability, ease of installation (for skilled individuals), and widespread availability make it a strong choice for both maintenance and repairs. However, the process requires careful attention to detail, and improper installation could lead to further damage. For those comfortable with mechanical work, this is an excellent DIY option; otherwise, professional installation is advisable to ensure longevity and optimal results.

- **Buy it if:** You re experiencing symptoms like blue smoke, poor power, excessive oil consumption, or rough running in a Johnson/Evinrude OMC engine, and you re confident in your ability to install it correctly (or have access to a mechanic). It s a cost-effective way to revive an engine without a full overhaul.

- **Avoid or reconsider if:** The engine has significant internal wear (e.g., scored cylinders, cracked pistons) or you lack experience with piston ring replacement. In such cases, a full engine rebuild or professional assessment may be necessary.

- Verify the part number and compatibility with your exact engine model.

- Clean the engine thoroughly before installation to prevent debris from damaging the new rings.

- Follow the manufacturer s gapping specifications precisely.

- Consider using a high-quality piston ring installer or sealant for a smoother fit.

- If unsure, consult a marine mechanic to assess whether the rings are the only issue or if further repairs are needed.

For most users, this ring set offers a **solid balance of affordability and performance improvement**, making it a recommended purchase for those addressing piston ring-related issues in their Johnson/Evinrude outboard.

Details:

Genuine OEM Johnson Evinrude OMC 391170 Standard Ring Set includes two rings designed specifically for outboard engines.

part #: 0391170 prices

• $20.63-$50.26

specifications ouboaen:

• for makes: Johnson
• brand: Johnson Evinrude Omc
• mpn: 0391170
• part type: Ring

returns ouboaen:

• policy: No Returns

seller ouboaen:

• # reviews: 5942
• city: Lenoir City, Tennessee
• rating: 99.9%

payments ouboaen:

• wallet: Paypal
• credit card: Mastercard
• other

shipping ouboaen:

• service: USPS Ground Advantage
• carrier: USPS
• transit: 3-9 Days
• cost: $8.75
• class: Standard
• type: Calculated

general ouboaen:

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

offer ouboaen:

• started: June 3, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 6

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