MERCURY 86381 Outboard Choke Knob

( Manufacturer Part Number: 86381 )

Review MERCURY Genuine Outboard Choke Knob New Oem

The **Mercury 86381 Outboard Choke Knob** is a precision-engineered component designed to enhance the performance, efficiency, and longevity of Mercury outboard motors, particularly those equipped with two-stroke or four-stroke engines requiring proper choke control. Crafted from durable, corrosion-resistant materials, this choke knob is built to withstand the harsh marine environment, including exposure to saltwater, UV radiation, and constant mechanical stress. Its sleek, ergonomic design ensures easy and intuitive operation, allowing boaters to seamlessly adjust the choke mechanism with minimal effort, whether starting a cold engine or fine-tuning fuel-air mixtures for optimal combustion. The knob features a secure, threaded interface that integrates seamlessly with Mercury s outboard throttle and choke systems, ensuring a tight, leak-proof fit that prevents fuel vapor loss and maintains engine efficiency. Engineered with a smooth, low-friction mechanism, it reduces wear on the internal components, extending the life of the choke system while providing a consistent, reliable response to user adjustments. Whether used on recreational fishing boats, speedboats, or high-performance vessels, this choke knob is a testament to Mercury s commitment to performance, durability, and user convenience, making it an essential upgrade for anyone seeking to optimize their outboard s starting capability and fuel economy.

**Pros and Cons of buying a Mercury 86381 Outboard Choke Knob**

The Mercury 86381 is a replacement choke knob designed for Mercury outboard motors, particularly those with a carbureted engine system. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Compatibility and Fit**

The 86381 is a direct replacement part for Mercury outboards, meaning it is engineered to fit seamlessly without requiring modifications. This ensures proper functionality and prevents leaks or misalignment.

2. **Durability and Quality**

Mercury is a well-known brand in marine engines, and their replacement parts are generally built to high standards. The choke knob is likely made from durable materials, such as plastic or metal, designed to withstand frequent use and exposure to water and salt.

3. **Easy Installation**

Replacing the choke knob is a straightforward process that typically requires minimal tools. Most users can complete the installation in under an hour, even without mechanical expertise.

4. **Reliability**

Since it is an OEM (Original Equipment Manufacturer) or high-quality aftermarket part, the choke knob is less likely to fail prematurely compared to cheaper, generic alternatives. This reduces the risk of engine starting issues, especially in cold weather.

5. **Cost-Effective**

While not the cheapest part available, the 86381 offers a balance between affordability and reliability. Replacing a faulty choke knob is far less expensive than overhauling the carburetor or engine.

6. **Maintenance Convenience**

A properly functioning choke knob ensures smooth engine startup, particularly in cold conditions. This makes it easier to maintain the engine without frequent adjustments or repairs.

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### **Cons**

1. **Limited Availability**

The 86381 may not be as widely stocked as more common marine parts, depending on the region or retailer. Some smaller marine supply stores or online sellers might not carry it, requiring special ordering.

2. **Potential Counterfeit Issues**

Since it is a Mercury part, there is a risk of purchasing a counterfeit or low-quality replica, especially from untrusted sellers. This could lead to poor performance, early failure, or even damage to the engine.

3. **Specific Model Fitment**

While the 86381 is designed for Mercury outboards, it may not fit all models or years. Double-checking the exact compatibility with your engine s make, model, and year is crucial to avoid purchasing the wrong part.

4. **No Adjustable Features**

The choke knob is typically a basic mechanical component with limited functionality. If you require precise choke adjustments (e.g., for tuning or performance modifications), this part may not offer the necessary customization.

5. **Wear Over Time**

Like all mechanical parts, the choke knob can wear out with prolonged use, especially in harsh conditions (e.g., saltwater exposure). Eventually, it may need replacement again, though this is not unique to this specific part.

6. **Potential Learning Curve for Replacement**

While simple, replacing the choke knob requires some familiarity with outboard engines. A first-time DIYer might struggle with removing the old knob or securing the new one properly, risking damage to the carburetor or throttle linkage.

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### **Conclusion**

The Mercury 86381 outboard choke knob is a reliable and practical replacement part for Mercury engines, offering durability, ease of installation, and compatibility with OEM standards. Its primary benefits lie in ensuring smooth engine operation, particularly in cold weather, and preventing more costly repairs down the line.

However, potential drawbacks include limited availability, the risk of counterfeit parts, and the need for careful model verification before purchase. For most boat owners maintaining a Mercury outboard, this part is a worthwhile investment due to its performance and longevity.

### **Recommendation**

If you are experiencing issues with your outboard s choke mechanism such as difficulty starting in cold weather, a stuck choke, or a worn knob the Mercury 86381 is a strong choice for replacement. To ensure you get the genuine part, purchase from authorized Mercury dealers, reputable marine supply stores, or trusted online retailers like Amazon, West Marine, or Mercury s official website.

Before buying, confirm the exact model and year of your outboard to avoid mismatches. If you are unsure about installation, consider consulting a marine mechanic or following a detailed replacement guide to prevent errors.

For those on a tight budget, generic choke knobs may be an alternative, but they often lack the durability and reliability of the Mercury part. Ultimately, the 86381 is a solid, long-term solution for maintaining your outboard s performance.

Details:

Genuine Mercury Outboard Choke Knob, Part Number 86381, Please verify compatibility with a dealer before purchase.

part #: 86381 prices

• $9.80-$17.24

specifications ouboaen:

• for makes: Mercury
• mpn: 86381

offer ouboaen:

• quantity: 1
• sold: 0
• started: May 23, 2026
• options: Ship-to-home
• availability: In Stock

shipping ouboaen:

• type: Fixed
• cost: $0.00
• transit: 5-10 Days
• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS
• class: Standard, Expedited

payments ouboaen:

• other
• wallet: Apple-pay
• credit card: Mastercard

returns ouboaen:

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

general ouboaen:

• condition: New
• Boat Parts > Outboard Engines Components > Other

seller ouboaen:

• rating: 99.8%
• city: Elizabethton, Tennessee
• # reviews: 11306

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