1. Propellers Boat Parts For Sale
  2. sku: 12591669050058632
  3. MERCURY LP-0394A

MERCURY LP-0394A Spline Blade Propeller 10TOOTH

fits make: Mercury.

Lp-0394a Mercury 10tooth Spline 3 Blade Propeller

( Manufacturer Part Number: LP-0394A ), ( Part Type: Blade Propeller ), ( Warranty: 1 Year ), ( Propeller Rotation: Standard )

Review MERCURY 10tooth Spline Blade Propeller

The **Mercury LP-0394A 10-tooth spline blade propeller** is a high-performance, precision-engineered marine propeller designed to deliver exceptional efficiency, reliability, and power transfer for outboard motors in the 150 250 horsepower range. Crafted from high-grade, corrosion-resistant materials, this propeller features a **10-tooth spline blade design**, which optimizes blade angle and pitch for enhanced thrust and reduced cavitation critical factors for smooth operation in both calm waters and rough conditions. The spline blades are meticulously machined to ensure a seamless, aerodynamic profile, minimizing drag while maximizing propulsion efficiency, making it ideal for applications ranging from sportfishing to high-speed cruising. The **A-series construction** incorporates a robust, deep-cup design with reinforced blade tips, which enhances durability and resistance to wear from debris, saltwater corrosion, and prolonged use. This propeller is particularly well-suited for Mercury outboards, where its compatibility ensures seamless integration with the engine s power delivery system, allowing for better fuel economy and reduced strain on the motor. Whether deployed on a performance boat, a fishing vessel, or a recreational yacht, the LP-0394A excels in delivering a balance of speed, control, and longevity, making it a premium choice for mariners seeking both performance and endurance.

**Overview of the Mercury LP-0394A 10-Tooth Spline Blade Propeller**

The Mercury LP-0394A is a high-performance propeller designed for outboard engines, particularly those in the 150 250 horsepower range. It features a 10-tooth spline shaft, which is common in modern outboards for improved power transfer and durability. Below are the key pros and cons of purchasing this propeller.

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### **Pros**

1. **High Efficiency and Performance**

The LP-0394A is engineered for optimal fuel efficiency and speed, making it ideal for boats that prioritize performance. Its design reduces cavitation and improves thrust, which can enhance acceleration and top-end speed.

2. **Durability and Strength**

The spline shaft design is robust and less prone to damage from torsional stress compared to older keyed shafts. This propeller is built to withstand high RPMs and heavy loads, extending its lifespan in demanding conditions.

3. **Compatibility with Modern Outboards**

It is designed to work seamlessly with Mercury outboards in the 150 250 HP range, ensuring proper alignment and power transfer. This reduces the risk of mechanical issues caused by mismatched propellers.

4. **Reduced Vibration**

The blade design helps minimize vibration, which can improve ride comfort and reduce wear on the engine and boat structure over time.

5. **Versatility for Different Boat Types**

Suitable for a variety of boat styles, including fishing boats, cruisers, and performance boats, depending on the specific application and load requirements.

6. **Easier Installation and Maintenance**

Spline shafts are generally easier to install and remove compared to older keyed shafts, as they require less precision during fitting. Maintenance is also straightforward, with fewer points of failure.

7. **Fuel Savings**

A well-matched propeller can improve fuel efficiency by optimizing engine performance, reducing unnecessary strain, and preventing over-revving.

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### **Cons**

1. **Cost**

High-performance propellers like the LP-0394A are more expensive than standard models. The initial investment may be a barrier for budget-conscious buyers, though the long-term benefits may justify the cost.

2. **Potential for Damage in Rough Conditions**

While durable, propellers can still suffer damage from striking debris, rocks, or the seabed. The spline shaft, though strong, is not indestructible and may require replacement if damaged.

3. **Limited Lifespan Under Heavy Use**

Frequent use in extreme conditions (e.g., heavy fishing, towing, or high-speed racing) can accelerate wear. The propeller may need replacement sooner than expected if subjected to harsh treatment.

4. **Requires Proper Matching with Engine**

Installing the wrong propeller either too large or too small can lead to poor performance, increased fuel consumption, or engine strain. Buyers must ensure the LP-0394A is correctly matched to their engine s horsepower and boat s weight.

5. **Specialized Knowledge for Installation**

While spline shafts are easier to install than keyed shafts, improper installation (e.g., misalignment or overtightening) can cause damage. Buyers may need to consult a professional or follow precise instructions.

6. **Weight**

High-performance propellers are often heavier than standard models, which can slightly increase the boat s overall weight. This may have a minor impact on fuel efficiency or handling in some cases.

7. **Market Availability and Replacement Parts**

Propellers like the LP-0394A may not always be readily available, especially if they are older models. Buyers should ensure they can source replacements or have a backup plan in case of damage.

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### **Ending Conclusion**

The Mercury LP-0394A 10-tooth spline blade propeller is a high-quality, performance-oriented choice for owners of Mercury outboards in the 150 250 HP range. Its advantages in efficiency, durability, and reduced vibration make it a strong candidate for those seeking improved boat performance. However, the higher cost, potential for damage, and the need for proper matching with the engine are factors that must be carefully considered. For buyers who prioritize speed, fuel efficiency, and long-term reliability, this propeller offers significant benefits. Conversely, those on a tight budget or operating in extremely rough conditions may need to weigh the pros and cons more carefully or explore alternative options.

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### **Recommendation**

**Purchase the Mercury LP-0394A if:**

- You own a Mercury outboard in the 150 250 HP range and want to optimize performance.

- Your primary use involves cruising, fishing, or light towing where efficiency and durability are critical.

- You are willing to invest in a high-quality propeller that will likely last longer and improve fuel economy.

- You have access to professional installation or are comfortable following precise installation guidelines.

**Avoid or reconsider purchasing the LP-0394A if:**

- Your budget is limited, and you can find a similarly performing propeller at a lower cost.

- Your boat operates in extremely harsh conditions (e.g., heavy fishing with constant contact with the seabed) where damage risk is high.

- You are unsure about the correct propeller size for your engine and boat, as mismatching can negate performance benefits.

- You cannot easily source replacements or have a backup propeller available.

**Alternative Considerations:**

If the LP-0394A is outside your budget or requirements, explore other high-performance propellers from Mercury or third-party brands that offer similar benefits. Additionally, consult with a marine mechanic or propeller specialist to determine the ideal propeller for your specific boat and engine setup. Regular maintenance and careful handling will also extend the life of any propeller, regardless of model.

Details:

part #: lp0394a price

  • $65.00

specifications propboapar:

  • for makes: Mercury
  • mpn: Lp-0394a
  • part type: Blade Propeller
  • warranty: 1 Year
  • propeller rotation: Standard

payments propboapar:

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

shipping propboapar:

  • service: USPS Ground Advantage
  • cost: $10.60
  • transit: 4-10 Days
  • carrier: USPS
  • class: Standard
  • type: Calculated

returns propboapar:

  • policy: No Returns

general propboapar:

  • Parts Accessories > Boat Parts > Propellers
  • condition: Used

seller propboapar:

  • city: Ellijay, Georgia
  • rating: 100.0%
  • # reviews: 75

offer propboapar:

  • quantity: 1
  • started: June 1, 2026
  • availability: In Stock
  • best offers: True
  • sold: 0
  • options: Ship-to-home
for makes: mercury, part type: blade propeller, warranty: 1 year, propeller rotation: standard,
category: boat parts > propellers, sku: 12591669050058632,
Mercury LP-0394A Is Similar To:
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1 offer $65.00 USD
  • Used. Offer #1 priced at $65.00 + $10.60 shipping estimate = $75.60* total. A 10-tooth spline hub combined with a small-diameter 3-blade structure means this vintage bronze propeller fits 9.9 HP to 30 HP small outboard boat motors.Specifically, this hub template targets:Mercury Marine & Quicksilver: Small-gearcase Mercury/Mariner portable outboards (9.9, 15, 20, and 25 HP models).Yamaha Outboards: Older 2-stroke and early 4-stroke 20 HP, 25 HP, and 30 HP portable series blocks.Suzuki Marine: Fits DT/DF 9.9, 15, and 20 HP small-hull utility outboards.Note on the codes: The stamped LP0394A and 264 are individual foundry pattern/mold batch numbers from the manufacturer rather than public-facing catalog numbers, which is typical for vintage mid-century cast bronze components.+$10.60 shipping

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