OMC 310678 Rubber Grommet Nos

( Manufacturer Part Number: 310678 )

Review OMC Rubber Grommet Nos

The **OMC 310678 Rubber Grommet** is a precision-engineered sealing component designed to provide reliable protection and insulation for cables, wires, and hoses passing through metal or rigid panels, walls, or bulkheads. Crafted from high-quality **neoprene or EPDM rubber** (depending on the specific variant), this grommet offers exceptional durability, flexibility, and resistance to environmental stressors such as moisture, oil, UV exposure, and temperature fluctuations, making it ideal for both indoor and outdoor applications. Its **smooth, reinforced rubber construction** ensures a tight, vibration-dampening seal that prevents abrasion, chafing, and potential damage to the enclosed wiring or tubing, while also reducing noise transmission in sensitive environments. The grommet features a **universal, self-centering design** with a slightly tapered interior, allowing for easy installation over a range of cable diameters without the need for excessive force or cutting, which minimizes the risk of fraying or insulation damage. Its **metal-reinforced edge** provides structural integrity, ensuring the grommet remains securely fastened in place even under mechanical stress or repeated movement. Whether used in automotive interiors, marine systems, industrial machinery, or construction applications, this grommet serves as a critical barrier against dust, debris, and contaminants, extending the lifespan of electrical connections and hydraulic lines. Its **versatile compatibility** with standard hole sizes typically ranging from **1/4" to 3/4"** (adjustable based on the cable diameter) makes it a convenient, off-the-shelf solution for a wide array of sealing requirements. Built to withstand prolonged exposure to harsh conditions, the OMC 310678 rubber grommet exemplifies reliability and performance, ensuring a secure, long-lasting fit for any application where cable protection is essential.

### Pros and Cons of Buying OMC 310678 Rubber Grommet (NOS)

1. **Compatibility and Fit:** The OMC 310678 rubber grommet is designed as a direct replacement for specific OMC (Outboard Marine Corporation) engines, ensuring an exact fit without modifications. This reduces the risk of installation errors or leaks that could arise from using an aftermarket part that doesn t align perfectly.

2. **Reliability:** OMC is a well-known brand in the marine and power equipment industry, and NOS (New Old Stock) parts are typically sourced from inventory that has been stored properly. This means the grommet is likely to be in excellent condition, with no signs of wear or damage from improper storage or handling.

3. **Performance:** Rubber grommets like this one serve critical functions, such as sealing and cushioning, to prevent fluid leaks and reduce vibration. A high-quality grommet ensures that the engine operates smoothly and efficiently, maintaining optimal performance and longevity.

4. **Ease of Installation:** Since the grommet is a direct replacement, it should be straightforward to install, especially if you have basic mechanical skills or access to a mechanic. The lack of need for customization or additional tools simplifies the repair process.

5. **Cost-Effective for Specific Needs:** While NOS parts can sometimes be more expensive than new aftermarket alternatives, they are often the best option for restoring vintage or high-end OMC engines where exact specifications are crucial. This can save money in the long run by avoiding the need for more extensive repairs or engine replacements.

6. **Preservation of Original Equipment:** For enthusiasts or collectors who value original components, using a NOS grommet helps preserve the authenticity of the engine, which can be important for performance tuning, restoration projects, or maintaining resale value.

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1. **Higher Cost:** NOS parts are generally more expensive than new aftermarket alternatives. The premium price reflects the fact that these parts are new but have been stored for an extended period, and they come with the assurance of original quality. This can be a significant drawback if you are working with a tight budget.

2. **Limited Availability:** NOS parts may not be as widely stocked as new aftermarket parts. This can make them harder to find, especially if you are not connected to a network of marine parts dealers or specialty stores. Longer lead times or higher shipping costs might apply.

3. **Storage Concerns:** While NOS parts are typically stored well, there is always a slight risk that the grommet could have been exposed to environmental factors (e.g., moisture, temperature fluctuations) during storage, even if minimal. This risk is usually low but is something to consider if you are particularly sensitive to part quality.

4. **Overkill for Minor Repairs:** If the grommet is only one of many worn or failing components in the engine, replacing just this part with a NOS grommet might not address the root cause of the issue. In such cases, investing in a NOS part alone could be a waste of money if other parts need replacement or maintenance.

5. **Potential for Counterfeit NOS Parts:** There is a risk of purchasing counterfeit NOS parts, especially if you buy from untrusted sellers. Counterfeit parts may not meet the original specifications, leading to poor performance, leaks, or even engine damage. Always verify the seller s reputation and authenticity of the part.

6. **Environmental Impact:** NOS parts contribute to the demand for new manufacturing, even if the part itself is new. If sustainability is a priority, you might consider exploring refurbished or recycled alternatives, though these may not always be available for specialized parts like this grommet.

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The OMC 310678 rubber grommet (NOS) is an excellent choice if you prioritize **exact compatibility, reliability, and performance** for an OMC engine. Its direct replacement nature ensures a seamless fit and reduces the risk of installation issues, making it ideal for restorations, high-performance applications, or when maintaining original equipment integrity is important. However, the higher cost and potential availability challenges may make it less practical for casual users or those on a tight budget. Additionally, if the grommet is part of a larger engine issue, addressing other components simultaneously could provide better long-term value.

For most **serious OMC engine owners, collectors, or performance enthusiasts**, the investment in a NOS grommet is justified by the assurance of quality and compatibility. For others, especially those dealing with budget constraints or minor repairs, evaluating whether the grommet is the primary issue or if other parts need attention is crucial before making a purchase.

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- You are restoring or maintaining an OMC engine where original parts are essential.

- You have verified the seller s authenticity to avoid counterfeit parts.

- The grommet is the primary component failing, and you are confident in its role in resolving the issue.

- Budget is not a limiting factor, and you value the peace of mind that comes with a high-quality, direct replacement part.

- You are working with a limited budget and can find a high-quality aftermarket replacement that meets your needs.

- The engine has multiple failing components, and a more comprehensive repair or upgrade is needed.

- You are unsure about the grommet s condition or the seller s reputation, and you prefer to mitigate risks by exploring other options.

Always cross-reference the part number with trusted sources (e.g., OMC s official parts catalog, reputable marine parts dealers, or forums dedicated to OMC engines) to confirm compatibility and authenticity before purchasing.

Details:

If the original package is included it may show signs of wear. OMC 310678 Rubber Grommet NOS. Rubber Grommet is new and in good condition, not original packaging.

Items are shipped using USPS, UPS, and FedEx. All parts are in stock and ready to ship.

part #: 310678 prices

• $9.17-$15.00

specifications ouboaen:

• for makes: Omc
• mpn: 310678

seller ouboaen:

• city: Ashaway, Rhode Island
• rating: 99.9%
• # reviews: 130141

offer ouboaen:

• started: March 16, 2026
• availability: In Stock
• best offers: True
• sold: 0
• quantity: 1
• options: Ship-to-home

general ouboaen:

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

shipping ouboaen:

• cost: $0.00
• type: Calculated
• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• carrier: USPS, UPS
• transit: 3-8 Days

payments ouboaen:

• wallet: Apple-pay
• credit card: Diners-club
• other

returns ouboaen:

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

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