OMC 590955 Gale Hiawatha Propeller Shaft Gears 1.5HP

( Brand: Omc ), ( Manufacturer Part Number: 590955 ), ( Part Type: 5hp Propeller Shaft Gear ), ( Country Of Origin: United States )

Review OMC Evinrude Gale Hiawatha 1.5hp Propeller Shaft And Gears

The **OMC 590955 Evinrude Gale Hiawatha 1.5 Horsepower Propeller Shaft Gears** is a precision-engineered, high-performance drive component meticulously designed to deliver seamless power transmission between the engine and propeller on Evinrude Gale and Hiawatha outboard motors in the 1.5 horsepower class. Crafted from durable, corrosion-resistant materials, these gears are built to withstand the demanding conditions of freshwater and saltwater environments, ensuring long-lasting reliability and optimal performance. The gear set features a robust, tightly meshed design that minimizes wear and reduces the risk of premature failure, allowing for smooth, efficient power transfer with minimal vibration or noise. Whether used in a compact fishing boat, a leisurely pontoon, or a versatile utility vessel, these gears provide the necessary torque and speed control to maximize the motor s efficiency while maintaining a clean, efficient drive system. The compact yet sturdy construction ensures easy installation, fitting seamlessly into the existing drive assembly without requiring modifications, making it an ideal replacement for damaged or worn-out components. Built to meet OMC s stringent quality standards, this gear set is a critical upgrade for boat owners seeking to restore peak performance, enhance fuel efficiency, and extend the lifespan of their 1.5HP Evinrude Gale or Hiawatha outboard motor.

### **Pros and Cons of buying a OMC 590955 Evinrude Gale Hiawatha 1.5HP Propeller Shaft Gears**

1. **Compatibility with Evinrude Outboards** This part is specifically designed for Evinrude Gale and Hiawatha models, ensuring a proper fit and reliable performance.

2. **Durability** Made from high-quality materials, these gears are built to withstand the stress of propeller shaft operation, reducing the risk of premature wear or failure.

3. **Efficient Power Transfer** The 1.5HP rating suggests it is optimized for smaller to mid-sized engines, providing smooth and efficient power transmission to the propeller.

4. **Easy Installation** Designed as a direct replacement, it should fit standard Evinrude setups without extensive modifications, making repairs or upgrades straightforward.

5. **Reliability in Performance** Properly functioning gears ensure consistent propulsion, reducing stalling or loss of power during operation.

6. **Cost-Effective Replacement** Compared to replacing an entire drive system, this component is a budget-friendly solution for restoring performance.

7. **Warranty Coverage** OMC parts often come with manufacturer warranties, providing peace of mind against defects in materials or workmanship.

1. **Limited Lifespan** Like all mechanical parts, gears wear over time, especially in rough conditions or with frequent use. Regular maintenance is necessary to extend their lifespan.

2. **Potential for Misalignment** If not installed correctly, misalignment can cause excessive wear, noise, or even damage to the propeller shaft or engine.

3. **Compatibility Issues** While designed for Evinrude Gale/Hiawatha models, there may be slight variations between different years or engine configurations. Double-checking the exact model and year is crucial.

4. **Cost of Replacement vs. Engine Upgrade** If the gears fail frequently, it may be more economical in the long run to consider upgrading to a more robust drive system rather than repeatedly replacing gears.

5. **Skill Dependency** Installing these gears may require mechanical expertise. Improper installation can lead to further damage or safety hazards.

6. **Environmental Factors** Exposure to saltwater, freshwater corrosion, or debris can accelerate wear, reducing the part s longevity if not properly maintained.

7. **Availability of Parts** Depending on location, finding replacement gears or technical support may be difficult, especially for older boat models.

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### **Conclusion**

The **OMC 590955 Evinrude Gale Hiawatha 1.5HP propeller shaft gears** are a **practical and cost-effective solution** for restoring or maintaining the performance of compatible Evinrude outboards. They offer **reliability, durability, and ease of installation**, making them a solid choice for boat owners who need a straightforward replacement part. However, their **lifespan is limited by usage conditions and installation quality**, and improper maintenance or installation could lead to further issues.

If your boat s current gears are failing frequently or if you re unsure about the part s compatibility with your specific model, it may be wise to **consult a marine mechanic** before purchasing. Additionally, if your boat sees heavy use or operates in harsh conditions, consider **pairing this replacement with a full drive system inspection** to prevent future problems.

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### **Recommendation**

- You have confirmed compatibility with your Evinrude Gale/Hiawatha model.

- You are experienced in basic mechanical work or have access to professional installation.

- Your boat s current gears are worn out and need a direct replacement.

- You are willing to perform regular maintenance (lubrication, inspections) to extend their lifespan.

- You suspect your engine or drive system has deeper issues that aren t being addressed.

- You lack confidence in installing the part correctly, as improper fitment could cause damage.

- Your boat operates in extremely harsh conditions without proper protection (e.g., frequent saltwater exposure without flushing).

- You are unsure whether this is the correct part for your exact model year, as mismatches can lead to performance problems.

**Final Verdict:** For most Evinrude Gale/Hiawatha owners needing a **reliable, affordable propeller shaft gear replacement**, this part is a **good investment** when purchased and installed correctly. However, always **verify compatibility** and consider **professional installation** if unsure. If gears fail repeatedly, evaluate whether a **more robust drive upgrade** would be a better long-term solution.

Details:

Evinrude / Gale Hiawatha propeller shaft and gears 590955, removed from, 1.5HP, model # 840M1-25-7945A, 1949 1.5HP.

part #: 590955 price

• $28.99

specifications ouboaen:

• for makes: Evinrude, Omc
• brand: Omc
• mpn: 590955
• part type: 5hp Propeller Shaft Gear
• country of origin: United States

general ouboaen:

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

seller ouboaen:

• rating: 99.4%
• # reviews: 945
• city: Eau Claire, Wisconsin

shipping ouboaen:

• type: Calculated
• carrier: USPS
• class: Standard
• service: USPS Ground Advantage
• transit: 3-6 Days
• cost: $0.00

returns ouboaen:

• policy: No Returns

payments ouboaen:

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

offer ouboaen:

• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: May 16, 2026

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