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  2. sku: 23315855746013861
  3. OMC 0581742

OMC 0581742 Engine Harness 55HP

fits make: Johnson, Evinrude, Omc. year: 1977.

0581742 Omc Johnson Evinrude Engine Harness 1977 55hp

( Brand: Omc ), ( Manufacturer Part Number: 0581742 ), ( Part Type: Engine Harness ), ( Country Of Origin: United States ), ( California Prop 65 Warning: Warning )

Review OMC Johnson Evinrude Engine Harness 55hp fits 1977

The **OMC 0581742 Johnson Evinrude Engine Harness for the 1977 55HP Outboard Motor** is a meticulously engineered, high-performance wiring harness designed to ensure seamless electrical connectivity and optimal functionality for this classic marine engine. Crafted with precision and built to withstand the demanding conditions of saltwater, freshwater, and frequent exposure to moisture, this harness is a critical component for maintaining the reliability and longevity of your Evinrude outboard. The wiring within this harness is carefully routed and insulated with marine-grade materials, including durable vinyl and weather-resistant connectors, to prevent corrosion, short circuits, and signal interference common issues that can plague older marine electrical systems. Whether you re restoring a vintage boat, upgrading an existing setup, or performing routine maintenance, this harness provides a direct replacement for the original factory wiring, ensuring compatibility with the engine s ignition system, starter motor, and other electrical components. Its robust construction minimizes the risk of fraying or degradation over time, even after prolonged use in harsh marine environments. For enthusiasts and mechanics alike, this harness is an essential upgrade, offering peace of mind with its dependable performance and the assurance that your engine will start reliably, run smoothly, and deliver the power you expect from a Johnson Evinrude 55HP motor. Perfect for both DIYers and professional technicians, it simplifies installation while significantly reducing the chances of electrical malfunctions that could disrupt your time on the water.

### **Pros and Cons of buying a OMC 0581742 Johnson Evinrude Engine Harness (1977 55HP)**

#### **Pros:**

1. **Compatibility** This harness is specifically designed for the 1977 55HP Johnson/Evinrude outboard engine, ensuring a proper fit and reliable electrical connections. Using an OEM or high-quality aftermarket harness reduces the risk of electrical issues that can damage the engine or starter.

2. **Reliability** Original or well-maintained OMC parts are built to last, reducing the likelihood of electrical shorts, loose connections, or starter failures. A faulty harness can prevent the engine from starting, so a quality replacement minimizes downtime.

3. **Prevents Electrical Damage** A worn or damaged harness can cause intermittent power loss, voltage spikes, or complete failure of the starter or ignition system. Replacing it proactively can save money by avoiding more extensive engine repairs.

4. **Ease of Installation** Since this is a direct replacement part, installation is straightforward for someone with basic mechanical skills. No major modifications are typically required, making it a cost-effective DIY project.

5. **Availability of Support** OMC (now part of Brunswick) has a long-standing reputation for marine parts, meaning you can easily find replacement harnesses, wiring diagrams, or technical support if needed.

6. **Long-Term Cost Savings** While the upfront cost may be higher than a cheap aftermarket alternative, a quality harness reduces the risk of repeated failures, saving money in the long run.

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#### **Cons:**

1. **Cost** Compared to generic or no-name harnesses, an OMC genuine or high-quality aftermarket harness will be more expensive. For budget-conscious buyers, this may be a significant upfront investment.

2. **Potential for Counterfeit Parts** If purchasing from an untrusted seller (especially online), there is a risk of receiving a fake or low-quality replica. Always verify the seller s reputation and product authenticity.

3. **Limited Lifespan** Even OEM harnesses degrade over time due to exposure to saltwater, UV rays, and vibration. If the boat is frequently used in harsh conditions, the harness may need replacement sooner than expected.

4. **Skill Dependency** While installation is relatively simple, improper handling (e.g., damaging wires, incorrect routing) can void warranties or create new problems. Those without mechanical experience may need professional help.

5. **Part Availability** Older models like the 1977 55HP engine may have limited aftermarket support compared to newer engines. While OMC still carries these parts, some specialty shops may not stock them.

6. **Potential for Overkill** If the harness is only slightly damaged (e.g., minor fraying), replacing the entire harness may be unnecessary. A partial repair (e.g., soldering or heat-shrinking) could suffice, reducing costs.

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### **Conclusion**

The **OMC 0581742 Johnson Evinrude Engine Harness (1977 55HP)** is a **highly recommended** purchase for anyone experiencing electrical issues with their engine or looking to prevent future problems. Its **reliability, compatibility, and long-term performance benefits** outweigh the **higher upfront cost** for most boat owners. However, if the harness is only minimally damaged, a **partial repair** might be a more economical solution.

For **serious boaters, vintage boat restorers, or those who prioritize durability**, this is a **worthwhile investment**. For **casual users or those on a tight budget**, weighing the severity of the issue against the cost is advisable.

### **Recommendation**

- **Buy it if:**

- You re experiencing **frequent starter or ignition failures**.

- The current harness is **severely damaged or corroded**.

- You want to **prevent future electrical issues** in a well-used boat.

- You value **OEM quality and long-term reliability**.

- **Consider alternatives if:**

- The harness is only **mildly worn** and a **partial repair** (e.g., heat-shrinking, soldering) is feasible.

- You re **strictly budget-conscious** and can find a **high-quality aftermarket harness** at a lower price (ensure it s from a reputable brand).

- You re unsure about **installation skills** and may need professional help, increasing labor costs.

**Final Verdict:** **Purchase the OMC harness** if you need a **direct, reliable replacement** it s a **smart long-term solution** for maintaining engine health. If unsure, consult a marine electrician before committing.

Details:

part #: 0581742 price

  • $45.00

specifications ouboaen:

  • for makes: Johnson, Evinrude, Omc
  • for years: 1977
  • brand: Omc
  • mpn: 0581742
  • part type: Engine Harness
  • country of origin: United States
  • california prop 65 warning: Warning

payments ouboaen:

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offer ouboaen:

  • best offers: True
  • options: Ship-to-home
  • started: April 15, 2026
  • quantity: 1
  • sold: 0
  • availability: In Stock

seller ouboaen:

  • city: Burley, Idaho
  • rating: 99.8%
  • # reviews: 28227

general ouboaen:

  • Boat Parts > Outboard Engines Components > Electrical Systems
  • condition: Used

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  • policy: Returns Accepted

shipping ouboaen:

  • class: Economy
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  • cost: $0.00
  • type: Fixed
for makes: johnson, evinrude, omc, for years: 1977, part type: engine harness, country of origin: united states, california prop 65 warning: warning,
category: boat parts > outboard engines components > electrical systems, sku: 23315855746013861,
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