OMC JOHNSON EVINRUDE BRP 359-381709 Valve Seat 4PK

( Brand: Omc Johnson Evinrude Brp ), ( Manufacturer Part Number: 359-381709 ), ( Part Type: Valve Seat ), ( Country Of Origin: United States )

Review OMC JOHNSON EVINRUDE BRP New Oem Valve And Seat Sets 4pk fits M2

The **OMC Johnson Evinrude 359-381709 Valve Seat Kit (4-Pack, M2)** is a precision-engineered replacement part designed specifically for Evinrude E-TEC and E-TEC HP outboard motors within the 150 200 horsepower range, ensuring optimal performance, reliability, and longevity for your marine engine. This high-quality valve seat kit is meticulously crafted to fit the **M2 valve configuration**, a common design found in models such as the Evinrude E-TEC 150, 175, and 185, as well as compatible Johnson outboards. Each of the four valve seats in this kit is forged from durable **chrome-molybdenum steel**, a material renowned for its strength, wear resistance, and ability to withstand the extreme heat and pressure generated during engine operation. The seats are precision-machined to exacting specifications, ensuring a perfect seal with the intake and exhaust valves, which is critical for maintaining proper compression, fuel efficiency, and overall engine power. Whether you're performing routine maintenance, addressing performance issues, or replacing worn components as part of a valve job, this kit provides a reliable solution that restores the engine s factory specifications. The inclusion of four seats two for intake and two for exhaust ensures that all critical components are covered, allowing for a complete and balanced restoration of your motor s internal combustion system. By using this OMC-approved part, you can trust that your Evinrude or Johnson outboard will operate with improved throttle response, reduced carbon buildup, and minimized risk of valve-related failures, ultimately extending the life of your engine and preserving its performance for years of trouble-free use on the water.

### **Pros and Cons of buying a OMC Johnson Evinrude 359-381709 Valve Seat (4-Pack, M2)**

1. **Compatibility and Fit** This valve seat is specifically designed for OMC Johnson/Evinrude outboards, particularly the **359 series engines**, ensuring a proper fit without modification. The **M2 designation** suggests it is tailored for a specific model variant, reducing the risk of performance issues or leaks.

2. **Quality and Durability** OMC (Outboard Marine Corporation) is a well-known brand in the marine industry, and their replacement parts are generally built to last. The valve seat is likely made from **hardened metal or composite materials** to withstand high temperatures and pressure, extending engine life.

3. **Performance Optimization** A worn or improperly seated valve can lead to **loss of compression, poor fuel efficiency, and reduced power**. Replacing the valve seat with an OEM or high-quality aftermarket part can restore proper engine function, improving throttle response and fuel economy.

4. **Prevents Costly Engine Damage** If the valve seat is cracked, warped, or worn, it can cause **valve damage, piston damage, or even catastrophic engine failure**. Replacing it proactively can save thousands in repair costs.

5. **Ease of Installation** Since this is a direct replacement part, installation should be straightforward for someone with **basic mechanical skills**. Most valve seat replacements require **removing the cylinder head, grinding the seat surface, and installing the new seat with gasket and sealant**.

6. **Warranty Coverage** If purchased from an **authorized dealer or reputable supplier**, this part may come with a warranty, providing peace of mind against defects.

7. **Availability of Installation Guides** OMC and marine repair resources often provide **detailed step-by-step instructions**, making the replacement process more accessible for DIYers.

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1. **Cost** Replacement valve seats are not cheap, especially when factoring in **labor costs if professional installation is required**. A single valve seat can range from **$50 to $150**, and since this is a **4-pack**, the total cost could be **$200 $600 or more**, depending on the source.

2. **Labor-Intensive Replacement** Removing and reinstalling a cylinder head is a **time-consuming process** that requires **specialized tools** (such as a valve seat cutter, torque wrench, and gasket scraper). If the engine is not properly serviced, it could lead to **misalignment or improper sealing**.

3. **Potential for Additional Damage** If the valve seat is part of a **larger engine issue** (e.g., warped head, cracked block, or worn valves), replacing just the seat may not fully resolve the problem. A **full engine inspection** may be necessary.

4. **Risk of Improper Installation** If not installed correctly, the new valve seat could **leak, fail to seal properly, or even crack under pressure**. This could lead to **engine overheating, loss of compression, or premature failure**.

5. **Limited Lifespan of Other Components** If the engine has **high mileage or has been neglected**, other components (such as **valves, springs, or seals**) may also be worn and require replacement simultaneously, increasing total costs.

6. **Depreciation of Older Engines** If the boat s engine is **old and not worth much**, spending money on a valve seat replacement may not be cost-effective in the long run. In such cases, **replacing the engine entirely** could be a better investment.

7. **Availability and Lead Times** Depending on the supplier, **stock availability may vary**, and some parts could have **long lead times**, delaying repairs.

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The **OMC Johnson Evinrude 359-381709 Valve Seat (4-Pack, M2)** is a **high-quality, direct replacement part** that can significantly improve engine performance and prevent costly damage if the valve seats are worn or failing. It is a **wise investment for boats with reliable engines** that still have **several years of useful life ahead**.

However, the **cost and labor requirements** make it a **moderate to high-effort repair**. If the engine is **old, heavily used, or part of a larger issue**, the benefits may not justify the expense. In such cases, **consulting a marine mechanic** to assess the overall engine condition is advisable before proceeding.

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- **If the engine is in good condition and the valve seats are confirmed worn**, purchasing and installing this valve seat is a **strong recommendation** to maintain engine health.

- **If the boat is frequently used in rough conditions or has high hours**, consider **replacing all four seats at once** to prevent future issues.

- **If the engine is old or the boat is not worth much**, weigh the **cost of repair against potential resale value** sometimes, **replacing the engine or selling the boat** may be more economical.

- **For DIYers**, ensure you have the **right tools, patience, and mechanical knowledge** before attempting the installation. If unsure, **hire a professional mechanic** to avoid costly mistakes.

- **Always verify compatibility** with your exact engine model (check the **engine serial number** against OMC s documentation) before purchasing.

**Final Verdict:** This is a **solid, reliable part** for maintaining an OMC/Evinrude 359 engine, but the decision to replace it should be based on **engine condition, usage frequency, and long-term boat value**.

Details:

This listing is for 4 NEW OMC JOHNSON EVINRUDE VALVE SEAT # 359-381709 4PK only 1 set pictured.

part #: 359381709 prices

• $14.00-$16.99

specifications ouboaen:

• for models: M2
• for makes: Omc
• brand: Omc Johnson Evinrude Brp
• mpn: 359-381709
• part type: Valve Seat
• country of origin: United States

shipping ouboaen:

• service: USPS Ground Advantage
• type: Fixed
• cost: $4.99
• class: Standard
• transit: 4-9 Days
• carrier: USPS

offer ouboaen:

• best offers: True
• sold: 0
• quantity: 1
• started: April 11, 2026
• options: Ship-to-home
• availability: In Stock

seller ouboaen:

• # reviews: 4045
• rating: 99.4%
• city: Antioch, Illinois

payments ouboaen:

• other
• credit card: Discover
• wallet: Paypal
• cash

returns ouboaen:

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

general ouboaen:

• condition: New
• Boat Parts > Outboard Engines Components > Intake Fuel Systems

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