OMC Nos Gear Set Nut Johnson/evinrude 0987671

( Brand: Omc ), ( Manufacturer Part Number: 987671 ), ( Part Type: Gear ), ( Country Of Origin: United States )

Review OMC Nos Oem Genuine Johnson/evinrude Gear Set And Nut

The **OMC 987671 NOS Johnson/Evinrude Gear Set Nut** is a meticulously crafted, high-performance replacement component designed exclusively for vintage and modern outboard engines manufactured by Johnson and Evinrude, ensuring seamless compatibility with a wide range of marine applications. This **new old stock (NOS)** gear set nut is a precision-engineered part, meticulously machined from durable, corrosion-resistant materials to withstand the rigorous demands of saltwater, freshwater, and high-load conditions. Constructed with a robust, threaded design, it securely fastens the gear assembly to the engine s transmission housing, maintaining optimal alignment and torque transfer while minimizing wear and tear on critical internal components. The nut s robust construction prevents loosening under vibration, ensuring reliable operation even during extended periods of use, whether in recreational boating, fishing, or professional marine applications. Ideal for restorers, mechanics, and enthusiasts seeking authentic, high-quality replacements for classic engines, this gear set nut preserves the original performance and longevity of the outboard motor, reducing the risk of premature failure and costly repairs. Its compatibility with a variety of Johnson and Evinrude models including those from the mid-20th century makes it a sought-after part for collectors and mechanics aiming to restore or maintain the integrity of these legendary engines. Whether used in a carefully preserved vintage vessel or a modern outboard requiring a genuine replacement, this NOS gear set nut delivers the strength, precision, and reliability expected from original equipment, ensuring smooth operation and extended service life.

### **Pros and Cons of buying a OMC 987671 (Johnson/Evinrude) Gear Set Nut**

1. **Compatibility** This part is specifically designed for Johnson/Evinrude outboard motors, ensuring a proper fit and reliable performance. It is a direct replacement for the original equipment manufacturer (OEM) gear set nut, reducing the risk of misalignment or improper installation.

2. **Durability** Made from high-quality materials, this gear set nut is built to withstand the stress of marine applications, including vibration, water exposure, and mechanical load. Properly installed, it should last as long as the original component, if not longer.

3. **Performance Reliability** A well-maintained gear set is critical for smooth power transmission in outboard motors. Using an OEM or high-quality aftermarket part like this one helps prevent gear slippage, excessive wear, or failure, which could lead to costly repairs or motor damage.

4. **Ease of Installation** Since it is a direct replacement, replacing this nut typically requires minimal modification to the existing setup. Most mechanics and DIYers familiar with outboard maintenance can install it with basic tools.

5. **Warranty Coverage** If purchased from a reputable dealer or directly from Johnson/Evinrude, this part may come with a warranty, providing peace of mind against defects or premature failure.

6. **Prevents Costly Damage** A failing gear set nut can lead to catastrophic gearbox failure, which often requires a full gearbox rebuild or replacement costing hundreds or even thousands of dollars. Replacing this part proactively can save significant expenses in the long run.

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1. **Cost** While not excessively expensive, this is a specialized part, and purchasing it from an authorized dealer or online retailer may incur higher costs compared to generic aftermarket alternatives. Prices can vary depending on availability and supplier.

2. **Limited Availability** Older or discontinued models may have reduced availability, potentially requiring special ordering or sourcing from a parts specialist. This could delay repairs if you don t have the part on hand.

3. **Installation Complexity** Although straightforward for experienced mechanics, replacing a gear set nut requires careful alignment and torque specifications to avoid damaging the gearbox or motor. Improper installation could lead to premature wear or failure.

4. **Potential Counterfeit Parts** If purchasing from untrusted sellers (e.g., third-party online marketplaces), there is a risk of receiving counterfeit or low-quality replicas. Always verify the seller s reputation and part authenticity.

5. **Maintenance Requirement** This part, like all mechanical components, will eventually wear out. Regular inspection and maintenance of the entire gearbox are necessary to ensure longevity, adding to the overall upkeep cost of the motor.

6. **Skill Dependency** If you lack mechanical experience, attempting this repair yourself could lead to mistakes. In such cases, hiring a professional may be more cost-effective despite the labor fee.

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The **OMC 987671 (Johnson/Evinrude) Gear Set Nut** is a critical and reliable replacement part for maintaining the integrity of your outboard motor s gearbox. Its primary advantages lie in **compatibility, durability, and performance reliability**, making it a wise investment for preventing costly gearbox failures. However, potential drawbacks such as **cost, availability issues, and the need for proper installation** must be considered.

For most boat owners, the **benefits outweigh the cons**, especially if the part is sourced from a trusted supplier and installed correctly. If you re unsure about the installation process, consulting a marine mechanic is advisable to avoid complications.

- **Buy from an authorized dealer or reputable online retailer** (e.g., Johnson/Evinrude s official website, MarineMax, or BoatUS Parts) to ensure authenticity and warranty coverage.

- **Follow the manufacturer s torque specifications** and installation guidelines to avoid damaging the gearbox.

- **Inspect the gearbox regularly** as part of routine maintenance to catch any early signs of wear or issues with the gear set.

- **Consider professional installation** if you lack experience with outboard repairs to ensure optimal performance and longevity.

In summary, this part is **highly recommended** for owners of Johnson/Evinrude outboards experiencing gear set nut failure or as a preventive replacement. Proper sourcing and installation will maximize its effectiveness and extend the life of your motor.

Details:

If this listing is for used parts. Check pictures to make sure you are OK with condition before buying. Nos Oem Genuine OMC Johnson/Evinrude Gear Set Nut. Will get parts as pictured.

They are normally dirty so expect them to have some grease, grime and or rust on. If listing is for new old stock parts. They may have scratches, dust and or minor rust shelf wear, paint loss, dings, dents. Opened or missing original packaging.

part #: 987671 prices

• $349.00-$788.93

specifications ouboaen:

• for makes: Johnson, Evinrude, Omc
• brand: Omc
• mpn: 987671
• part type: Gear
• country of origin: United States

general ouboaen:

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

offer ouboaen:

• quantity: 1
• started: March 8, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

seller ouboaen:

• # reviews: 16239
• rating: 99.9%
• city: Levering, Michigan

returns ouboaen:

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

payments ouboaen:

• credit card: Discover
• wallet: Paypal
• other

shipping ouboaen:

• class: Standard, Expedited
• transit: 4-8 Days
• cost: $18.00
• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS
• type: Calculated

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