EVINRUDE JOHNSON 329829 Superseded Thermostat Cover 333967 60HP

( Brand: Evinrude Johnson ), ( Manufacturer Part Number: 329829 ), ( Part Type: Cover Thermostat )

Review EVINRUDE JOHNSON Omc Superseded Thermostat Cover Used 60hp fits K7 1989

The **Evinrude Johnson 329829 Original Manufacturer s Cover (OMC) Thermostat Housing Assembly**, originally designated as **333967** before being superseded, is a meticulously engineered component designed exclusively for the **1989 60HP K7 outboard motor** from the legendary **Johnson/Evinrude** lineup. This high-performance part serves as the critical interface between the engine s cooling system and the thermostat, ensuring precise temperature regulation to optimize fuel efficiency, power output, and longevity. Crafted from durable **cast aluminum** and precision-machined to exacting specifications, the thermostat cover features a robust, leak-resistant design with a **threaded mounting flange** that securely fastens to the engine block, preventing coolant leaks under high-pressure conditions. The internal structure incorporates a **sealed gasket surface**, which, when paired with the original OEM gasket (part #329830), creates an airtight seal to maintain proper coolant circulation and prevent overheating an essential factor for maintaining the K7 s reputation for reliability and performance. This part is fully compatible with the **1989 model year** and is often sought after by restoration enthusiasts and mechanics working on classic Johnson/Evinrude engines, as it represents the original factory specification before later revisions altered dimensions or materials. Whether restoring a vintage boat or replacing a worn-out component in a well-maintained vessel, this thermostat cover ensures that the cooling system operates at peak efficiency, safeguarding the engine s internal components from thermal stress and extending the lifespan of the entire propulsion system.

### **Pros and Cons of buying a Evinrude Johnson 329829 OMC Superseded 333967 Thermostat Cover (1989 60HP K7)**

1. **Common and Well-Documented Part** This thermostat cover is part of a widely used OMC (Outboard Marine Corporation) engine series, meaning it has been thoroughly tested and documented. This makes troubleshooting and replacement easier compared to rare or discontinued parts.

2. **Aftermarket Availability** Due to its popularity, you can often find this part from multiple suppliers, including OEM (Original Equipment Manufacturer) and reputable aftermarket brands. This increases your chances of getting a genuine or high-quality replacement.

3. **Compatibility with Other Models** The 329829 and 333967 thermostat covers are superseded versions, meaning they may also fit slightly modified or updated versions of the same engine family. This flexibility can save you money if you need a replacement for a related model.

4. **Ease of Installation** The design is straightforward, and many boat owners or mechanics can install it without specialized tools. The thermostat cover is typically secured with bolts, and the gasket is usually included or easily replaceable.

5. **Prevents Engine Overheating** A faulty thermostat cover can lead to overheating, which damages the engine. Replacing it ensures proper cooling system function, extending the engine s lifespan.

6. **Cost-Effective Repair** Compared to replacing an entire engine or cooling system, this part is relatively inexpensive. A new or refurbished thermostat cover is a minor repair that can avoid costly failures.

7. **Superseded Status May Indicate Reliability** Since it was superseded, it suggests that the original design was stable and didn t require frequent revisions. This could mean fewer long-term issues compared to newer models with unproven changes.

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1. **Age of the Engine** The 1989 60HP K7 engine is older, which means it may have wear-and-tear issues unrelated to the thermostat cover. You ll need to assess the overall condition of the engine, cooling system, and other components before purchasing.

2. **Potential for Wear or Damage** If the thermostat cover was removed due to a failure (e.g., cracked housing, leaking gasket), the surrounding components (water pump, impeller, or cooling passages) may also be degraded. Inspect these areas before buying.

3. **Limited Warranty or Guarantee** Since this is an older part, aftermarket sellers may not offer warranties, or the warranty could be very limited. OEM parts might come with a short warranty, but it s unlikely to cover long-term issues.

4. **Compatibility Concerns** While this part is compatible with the 1989 60HP K7, ensure it matches your exact engine model and year. Some superseded parts may not fit if the engine was modified or upgraded (e.g., with different cooling system components).

5. **Difficulty Finding Original Documentation** Older engines may lack detailed service manuals or part diagrams. You ll need to rely on online resources, forums, or a mechanic s expertise to confirm the correct installation and function.

6. **Risk of Counterfeit Parts** Since this is a common part, there s a chance of purchasing a knockoff or low-quality aftermarket replacement. Stick to reputable sellers (eBay, marine supply stores, or trusted online retailers) to avoid this.

7. **Potential for Hidden Issues** If buying a used engine or boat with this part already installed, there s a risk that the thermostat cover was replaced due to a previous failure, and other underlying problems (e.g., water pump failure, coolant leaks) may still exist.

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Buying the **Evinrude Johnson 329829/333967 thermostat cover for a 1989 60HP K7 engine** is a practical and cost-effective solution if your primary goal is to prevent overheating and maintain cooling system integrity. The part is widely available, easy to install, and relatively inexpensive. However, the decision should be made with caution, as the engine s age and overall condition play a significant role in whether this repair will be sufficient.

If you re replacing the part due to a specific issue (e.g., coolant leaks, overheating), ensure you also inspect the water pump, hoses, and cooling passages. If the engine shows signs of extensive wear or if other components are failing, consider whether a full engine overhaul or replacement might be more economical in the long run.

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1. **Verify Compatibility** Double-check that the **329829 or 333967 thermostat cover** is the exact part needed for your engine. Cross-reference with your engine s serial number or consult a marine mechanic if unsure.

2. **Purchase from a Reputable Source** Buy from a trusted seller (e.g., **MarineMax, West Marine, eBay with positive feedback, or an authorized dealer**) to avoid counterfeit or damaged parts. If buying used, inspect the part for cracks, corrosion, or wear.

3. **Inspect the Cooling System** Before installation, check the **water pump, impeller, hoses, and gaskets** for leaks, damage, or excessive wear. Replace any failing components to prevent future issues.

4. **Consider a Full Service** If the engine has high mileage or shows signs of distress (e.g., oil leaks, rough idling, excessive vibration), a **cooling system flush and inspection** may be warranted alongside the thermostat cover replacement.

5. **Budget for Additional Repairs** If the engine is older, allocate extra funds for potential related repairs (e.g., replacing the water pump, cooling passages, or even the entire cooling system) to avoid recurring problems.

6. **Document the Repair** Keep records of the replacement, including the part number, installation date, and any associated repairs. This helps with future troubleshooting and may be useful if you sell the boat later.

**Final Verdict:** If the thermostat cover is the only known issue and the rest of the engine is in decent condition, replacing it is a **wise and cost-effective choice**. However, if the engine is neglected or shows multiple signs of failure, prioritize a **comprehensive inspection** before proceeding.

Details:

As pictured freshwater from a 1989 60hp.

part #: 329829 prices

• $20.00-$70.00

specifications ouboaen:

• for models: K7
• for makes: Omc, Evinrude
• for years: 1989
• brand: Evinrude Johnson
• mpn: 329829
• part type: Cover Thermostat

seller ouboaen:

• # reviews: 1755
• rating: 99.4%
• city: Leavenworth, Kansas

offer ouboaen:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• started: February 10, 2026
• quantity: 1
• sold: 0

returns ouboaen:

• policy: No Returns

payments ouboaen:

• other
• wallet: Paypal
• credit card: Discover

general ouboaen:

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

shipping ouboaen:

• type: Fixed
• transit: 3-8 Days
• class: Economy
• service: Economy
• cost: $0.00

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