JOHNSON EVINRUDE OMC 0585038 Starboard Temperature Switch 745419142742

( Brand: Johnson Evinrude Omc ), ( Manufacturer Part Number: 0585038 ), ( Part Type: Switch ), ( Warranty: 30 Day ), ( UPC: 745419142742 )

Review JOHNSON EVINRUDE OMC Oem Starboard Temperature Switch

The **Johnson Evinrude OMC 0585038 (585038) Starboard Temperature Switch** is a precision-engineered marine component designed to enhance the safety, efficiency, and longevity of outboard motors in recreational and performance boats. Part of the trusted OMC (Outboard Marine Corporation) lineup, this temperature switch is specifically engineered to monitor and regulate the cooling system of Evinrude outboard engines, ensuring optimal thermal performance under varying operating conditions. Positioned on the starboard (right-hand) side of the motor, this switch plays a critical role in the engine s cooling circuit by detecting overheating conditions and triggering protective measures to prevent catastrophic failure. Constructed from high-quality, marine-grade materials, the switch is built to withstand the harsh environments of saltwater, freshwater, and extreme temperatures, delivering reliable performance season after season. Its robust design incorporates a thermal sensor that continuously monitors the engine s coolant temperature, sending critical feedback to the motor s control module to adjust cooling fan operation, throttle response, or even shut down the engine if temperatures exceed safe thresholds. This proactive approach not only protects the engine from overheating but also extends the life of internal components like the water pump, impeller, and cylinder heads, reducing the risk of costly repairs. Ideal for Evinrude outboards ranging from mid-sized to high-performance models, this temperature switch is a straightforward yet essential upgrade for boat owners seeking to optimize engine performance and reliability. Whether used in a leisurely weekend fishing trip or a high-speed cruising adventure, the 0585038 Starboard Temperature Switch ensures that your outboard operates within its optimal temperature range, delivering consistent power and peace of mind. Its compatibility with OMC s advanced engine management systems makes it a seamless fit for modern outboards, where precision and reliability are paramount. For those who demand the best in marine engineering, this component exemplifies the blend of durability, innovation, and performance that defines the Johnson Evinrude brand.

**Pros and Cons of buying a Johnson Evinrude OMC 0585038 (585038) Starboard Temperature Switch**

The Johnson Evinrude OMC 0585038 temperature switch is a critical component for the cooling system in outboard motors, particularly those manufactured by OMC (Outboard Marine Corporation). Below is a detailed analysis of its advantages and disadvantages.

---

### **Pros**

1. **Compatibility and Fitment**

The 0585038 switch is designed specifically for certain OMC outboard motors, ensuring a precise fit without modifications. This reduces the risk of installation errors and improves reliability. It is commonly used in models such as the Evinrude E-TEC and Johnson E-TEC series, particularly those with electronic cooling systems.

2. **Reliability and Performance**

As an OEM (Original Equipment Manufacturer) part, this switch is built to the same high standards as the components installed at the factory. This generally translates to better durability and performance compared to aftermarket alternatives that may not meet the same quality benchmarks. A functional temperature switch ensures proper cooling system operation, preventing overheating and potential engine damage.

3. **Ease of Installation**

Since it is an OEM part, the installation process is straightforward for those familiar with outboard motor maintenance. The switch is typically located near the cooling water inlet and can be replaced with basic tools. Many users report that replacing a faulty switch is a relatively simple DIY task, saving labor costs if done by the owner.

4. **Prevents Cooling System Failures**

The temperature switch monitors the engine s coolant temperature and triggers the cooling fan or other protective measures when necessary. A failing switch can lead to overheating, which may cause severe engine damage. Replacing it proactively can extend the life of the motor and avoid costly repairs.

5. **Warranty Coverage (If Purchased New)**

If you buy the part new directly from an authorized dealer or manufacturer, it may still be covered under OMC s warranty, depending on the age and condition of the motor. This provides peace of mind in case the part fails shortly after installation.

6. **Accessibility of Parts**

OMC parts, including this temperature switch, are widely available through marine dealers, online retailers (such as Amazon, West Marine, or manufacturer websites), and salvage yards. This makes it easier to source the part quickly, especially during emergencies.

---

### **Cons**

1. **Cost**

As an OEM part, the Johnson Evinrude 0585038 temperature switch is typically more expensive than aftermarket alternatives. Prices can range from $50 to $150 or more, depending on the retailer and whether it is new or refurbished. For budget-conscious buyers, this may be a significant drawback, especially if the part is not urgently needed.

2. **Limited Lifespan**

Like all mechanical components, temperature switches have a finite lifespan. They can fail due to corrosion, electrical issues, or general wear and tear, particularly in saltwater environments where corrosion is more aggressive. Regular maintenance and periodic inspection are necessary to catch failures before they lead to engine problems.

3. **Potential for Counterfeit Parts**

Purchasing from unauthorized sellers or third-party online marketplaces carries the risk of receiving counterfeit or low-quality parts. Counterfeit OMC parts may not function correctly, leading to further issues or voiding any remaining warranty coverage. Always buy from reputable dealers to mitigate this risk.

4. **Complexity for Non-Mechanics**

While the replacement process is generally simple, those without mechanical experience may struggle with tasks such as disconnecting wiring, removing the old switch, or ensuring a proper seal. Improper installation could lead to leaks or electrical issues, negating the benefits of the replacement.

5. **Replacement Frequency**

In harsh conditions (e.g., saltwater, frequent use, or poor maintenance), temperature switches may need to be replaced more frequently. This can add to long-term costs and inconvenience, particularly if the motor is used heavily.

6. **Compatibility Confusion**

It is crucial to verify that the 0585038 switch is compatible with your specific motor model. Mixing up part numbers can lead to purchasing an incorrect switch that does not fit or function properly. Always cross-reference the part number with your motor s specifications to avoid this mistake.

---

### **Conclusion**

The Johnson Evinrude OMC 0585038 temperature switch is a high-quality, reliable component that plays a vital role in preventing engine overheating. Its OEM status ensures compatibility, durability, and ease of installation, making it a sound choice for maintaining the health of your outboard motor. However, the higher cost and potential for counterfeit parts are notable drawbacks, particularly for those on a tight budget or without access to verified sellers.

For most boat owners, the benefits of using an OEM part such as improved reliability and peace of mind outweigh the drawbacks. If you are experiencing cooling system issues or notice symptoms like overheating, replacing the temperature switch is a prudent investment to avoid more severe and expensive engine damage.

---

### **Recommendation**

If you are in need of a replacement temperature switch for your OMC outboard motor, **purchase the Johnson Evinrude OMC 0585038 from an authorized dealer or a trusted online retailer** to ensure authenticity and quality. Verify the part number matches your motor model to avoid compatibility issues. While aftermarket alternatives may be cheaper, they often lack the reliability of OEM parts, potentially leading to recurring problems.

For those comfortable with basic mechanical work, replacing the switch yourself is a cost-effective solution. If you are unsure about the process, consult a marine mechanic to ensure proper installation. Regularly inspect your cooling system and replace the temperature switch as part of routine maintenance to extend the life of your motor and prevent unexpected failures.

Details:

100% of the time. If something isn't photo'd or mentioned here in the then it is NOT included. This allows you to see the price, pick your method and gives best chance of getting it shipped same day. Set your search to Price Shipping Lowest First if you want really find the best deal.

Carefully review each and every photo as they best describe the condition of item what is all included in this listing. FREE shipping is NEVER really. Have a question. EXPEDITED SHIPPING Need it faster.

Less than 1/2 price offers are a waste of our time. Shipping is not negotiable. We entertain reasonable offers. If a part doesn't work for you any reason let us know.

Weights and dimensions are entered for each item.

part #: 0585038 prices

• $79.99-$124.95

specifications ouboaen:

• for makes: Johnson
• brand: Johnson Evinrude Omc
• mpn: 0585038
• part type: Switch
• warranty: 30 Day
• upc: 745419142742

shipping ouboaen:

• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail
• transit: 2-6 Days
• cost: $8.60
• carrier: USPS
• type: Calculated

payments ouboaen:

• other
• credit card: Diners-club
• wallet: Paypal

seller ouboaen:

• # reviews: 31174
• city: Plainwell, Michigan
• rating: 99.9%

returns ouboaen:

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

general ouboaen:

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

offer ouboaen:

• quantity: 4
• options: Ship-to-home
• availability: In Stock
• best offers: True
• started: May 21, 2026
• sold: 0

Johnson Evinrude Omc 0585038 Is Similar To:

• 017612 017612 Evinrude Brp Johnson E-tec (25.7% similar) Omc, Evinrude, Johnson e-etc outboard motor 3 gallon remote oil tank w low sensor good for all and newer systems check model's including will not work with Fichte mounting bracket included...(September 1st, 2017)
• 0439195 5000334 0439195 5000334 Johnson-evinrude Fuel Pump (29.9% similar) Inventory: A1. Condition: unit has been inspected, tested, and approved by a certified outboard marine mechanic. Item: fuel pump Johnson Evinrude: this is a used high pressure for 150, 175 hp v6 Fichte years...(April 19th, 2017)
• 395088 395088 Evinrude 1978-1994 85hp-300hp Johnson (23.3% similar) This will fit year model's 85HP-300HP Johnson Evinrude outboard motors. This tilt and trim has been tested is in good working condition...(April 12th, 2017)
• 00000 Evinrude 1975 Johnson 85hp (28% similar) ...(February 21st, 2018)
• 0116761 Evinrude-johnson Bow Arm Assembly 089287000156 (26.2% similar) Bow arm assembly...(July 25th, 2017)
• 0123278 0123610 Omc Johnson Evinrude Outboard Motor Binnacle Control Box Handle Kit (40.5% similar) New handle kit fits single and dual mount binnacle controls...(May 28th, 2018)
• 0127084 Brp Evinrude Johnson Omc Stringer Thrust Washer (34.1% similar) Thrust washer...(July 2nd, 2018)
• 0127278 Brp Johnson Evinrude Single (36.9% similar) For 1996 and later systems check single binnacle remote controls. Only the cover-no switch or other. Single top mount Johnson Evinrude remote control cover. Reference part number in good reusable condition-no fading-no cracks or broken areas...(January 26th, 2018)
• 0127280 Johnson Evinrude Nos Outboard Key (49.5% similar) Calculated shipping uses calculator. Sales: use shipping calculator to get charges. Buyer pays shipping except if free is offered. E of the value prop shaft. Note: ups cannot deliver to a PO. Under no circumstances will we falsify or undervalue export declared value documents. Torn, broken, written ...(February 19th, 2019)
• 0172522 Evinrude Johnson Oem Brp Outboard Ignition Kit 745419000677 (35.6% similar) 5 hp looking for something else. Items will only be accepted for return in their original condition, with absolutely no accessories missing. Correspondence via messaging is preferred...(May 6th, 2018)
• 0172574 New Genuine Johnson Evinrude Sending Unit Kit Lot (35.2% similar) ...(March 1st, 2018)