OMC Nos Upper Gearcase Shim Kit Johnson/evinrude 0981796

( Brand: Omc ), ( Manufacturer Part Number: 981796 ), ( Country Of Origin: Mexico )

Review OMC Nos Oem Genuine Johnson/evinrude Upper Gearcase Shim Kit

The **OMC 981796 NOS Johnson/Evinrude Upper Gearcase Shim Kit** is a meticulously crafted, high-performance aftermarket solution designed exclusively for marine engines requiring precise gearcase alignment and optimal mechanical efficiency. This **New Old Stock (NOS)** shim kit is engineered to restore or enhance the performance of older Johnson and Evinrude outboard motors, particularly those featuring the upper gearcase assembly, by allowing for fine-tuned adjustments to critical clearances. Crafted from high-quality, durable materials, these shims are precision-machined to exact specifications, ensuring they fit seamlessly between the gearcase and its mounting surfaces, eliminating unwanted play, vibration, and potential wear that can compromise engine longevity and performance. Whether used for maintenance, restoration, or performance tuning, this kit is ideal for enthusiasts and professionals seeking to fine-tune their outboard s operation, reduce noise, and maximize power delivery. The shims are packaged in a clean, organized format, ready for easy installation, making them a reliable choice for those who demand precision and reliability in their marine engine modifications. Perfect for applications ranging from classic boat restorations to high-performance custom builds, this kit exemplifies the quality and attention to detail that OMC is known for, ensuring that your engine runs smoother, lasts longer, and performs at its best.

### **Pros and Cons of buying a OMC 981796 (Johnson/Evinrude Upper Gearcase Shim Kit)**

1. **Compatibility** This shim kit is specifically designed for the Johnson/Evinrude upper gearcase, ensuring a proper fit for models requiring this part. It is a direct replacement, reducing the risk of misalignment or improper installation.

2. **Performance Improvement** Shim kits are used to fine-tune gearcase alignment, which can help reduce vibration, improve gear engagement, and enhance overall drivetrain efficiency. Proper shimming ensures smoother operation and extends the life of the gearcase and related components.

3. **Prevents Premature Wear** Misaligned gearcases can cause excessive wear on gears, bearings, and seals. Using the correct shims helps maintain proper spacing, reducing stress on these parts and preventing costly repairs down the line.

4. **Easy Installation** Shim kits are relatively straightforward to install, especially if you have basic mechanical experience. They typically come with clear instructions, and the process involves adjusting the shims between the gearcase and mounting surface until the correct alignment is achieved.

5. **Cost-Effective Maintenance** Compared to major gearcase repairs or replacements, a shim kit is a relatively inexpensive solution for addressing alignment issues. It can save money in the long run by preventing more serious problems.

6. **Widely Available** As an OMC (Outboard Marine Corporation) part, this shim kit is likely available through marine dealers, online retailers, and aftermarket suppliers, making it easy to source.

7. **Durability** The shims are typically made from high-quality materials designed to withstand the rigors of marine environments, including exposure to water, salt, and vibration.

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1. **Requires Technical Knowledge** While installation is manageable for those with mechanical experience, improper shimming can lead to misalignment, which may cause vibration, gear damage, or even catastrophic failure. If unsure, consulting a professional is advisable.

2. **Time-Consuming Process** Adjusting shims accurately can take time, especially if you re working with a stubborn or difficult-to-align gearcase. This may require multiple adjustments and checks for proper alignment.

3. **Potential for Overcomplicating Repairs** If the gearcase issue isn t related to alignment (e.g., worn bearings, damaged gears, or a cracked case), shims alone won t fix the problem. Diagnosing the root cause is essential before purchasing this kit.

4. **Limited Lifespan** While shims themselves are durable, they may need replacement if the gearcase or mounting surface degrades over time. This could lead to additional costs in the future.

5. **Risk of Incorrect Selection** Purchasing the wrong shim kit (e.g., for a different model or year) could result in wasted money and installation difficulties. Always verify compatibility before buying.

6. **Not a Permanent Fix** Shim kits address alignment but don t repair worn or damaged components. If the gearcase or related parts are beyond repair, shimming may only provide temporary relief.

7. **Environmental Factors** Marine environments can accelerate wear on shims and other components due to saltwater corrosion, salt spray, and constant vibration. Regular maintenance is necessary to ensure long-term reliability.

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The **OMC 981796 Upper Gearcase Shim Kit** is a valuable tool for maintaining proper alignment in Johnson/Evinrude outboard gearcases, offering benefits such as improved performance, reduced vibration, and extended component life. However, it requires careful installation and proper diagnosis to be effective. For those with mechanical experience or access to professional help, this kit is a cost-effective solution for alignment-related issues. If the gearcase has more severe problems (e.g., internal damage), shims alone may not suffice, and further repairs may be necessary.

- You re experiencing vibration, rough shifting, or unusual noise from your gearcase.

- You ve confirmed that the issue is related to misalignment (not worn gears or bearings).

- You re comfortable with basic mechanical work or have access to a mechanic for installation.

- You want to proactively maintain your gearcase to prevent future problems.

- You re unsure whether the problem is alignment-related (consult a professional first).

- The gearcase shows signs of internal damage (e.g., leaking oil, grinding noises, or visible wear).

- You lack the time or skills to install it correctly.

- You re on a tight budget and the issue may require more extensive repairs.

**Final Verdict:** For the right situation, this shim kit is a practical and affordable maintenance solution. However, always prioritize proper diagnosis and installation to maximize its effectiveness. If in doubt, seek guidance from a marine technician before purchasing.

Details:

They are normally dirty so expect them to have some grease, grime and or rust on. Nos Oem Genuine Omc Johnson/Evinrude Upper Gearcase Shim Kit. If listing is for new old stock parts. Opened or missing original packaging.

If this listing is for used parts. Check pictures to make sure you are OK with condition before buying. Will get parts as pictured. They may have scratches, dust and or minor rust shelf wear, paint loss, dings, dents.

part #: 981796 prices

• $39.99-$50.00

specifications ouboaen:

• for makes: Johnson, Evinrude, Omc
• brand: Omc
• mpn: 981796
• country of origin: Mexico

general ouboaen:

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

offer ouboaen:

• options: Ship-to-home
• sold: 0
• started: March 12, 2026
• quantity: 1
• availability: In Stock

seller ouboaen:

• city: Levering, Michigan
• # reviews: 16273
• rating: 99.9%

returns ouboaen:

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

payments ouboaen:

• other
• credit card: Mastercard
• wallet: Paypal

shipping ouboaen:

• carrier: USPS, FedEx
• transit: 2-6 Days
• type: Calculated
• class: Standard, Expedited
• cost: $13.05
• service: USPS Ground Advantage, USPS Priority Mail, FedEx Ground / FedEx Home Delivery

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