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  3. YAMAHA 6AX-45974-00-00

YAMAHA 6AX-45974-00-00 Saltwater Pitch Lh Counter Prop 1/2X Propeller

fits make: Yamaha. year: 2015–2021.

6ax-45974-00-00 Yamaha Saltwater Series Xl 15 1/2x 21 Pitch Lh Counter Stainless Prop Propeller

( Manufacturer Part Number: 6AX-45974-00-00 ), ( Part Type: Counter Prop Propeller ), ( Propeller Rotation: Counter )

Review YAMAHA Saltwater Series Xl 1/2x Pitch Lh Counter Stainless Prop Propeller fits 2015–2021

The **Yamaha 6AX-45974-00-00 Saltwater XL 15 " x 21" Pitch LH Counter Rotating Propeller** is a high-performance, marine-grade propeller designed to deliver exceptional efficiency, durability, and reliability for saltwater applications, making it an ideal choice for both recreational and professional boating enthusiasts. Engineered with Yamaha s proprietary **Saltwater XL** technology, this propeller is crafted from corrosion-resistant materials, ensuring longevity even in the harshest marine environments where saltwater erosion and abrasive debris are common. The **15 " diameter** and **21" pitch** dimensions strike an optimal balance between power delivery and fuel efficiency, allowing it to thrive across a wide range of Yamaha outboard engines, particularly those in the 150 250 horsepower class, where its performance shines. The **left-hand (LH) counter-rotating design** enhances thrust and reduces torque effects, improving handling and stability while reducing fatigue on the engine and drive shaft, making it a superior alternative to traditional single-rotation props. Its **four-blade configuration** provides a refined blend of acceleration, top-end speed, and fuel economy, ensuring smooth operation whether cruising at leisure or pushing through rough water at high speeds. The **precision-machined blades** feature a hydrodynamic contour that minimizes cavitation and vibration, contributing to a quieter, more comfortable ride. Built to withstand the rigors of daily use, this propeller is backed by Yamaha s reputation for quality, offering a robust solution for anglers, skiers, and boaters who demand both performance and endurance. Whether navigating open water, tackling choppy seas, or towing at high speeds, the **6AX-45974-00-00** delivers consistent power and efficiency, making it a standout choice for those seeking a propeller that combines cutting-edge engineering with uncompromising durability.

### **Pros and Cons of the Yamaha 6AX-45974-00-00 Saltwater XL 15.5" x 21" Pitch LH Counter Propeller**

#### **Pros:**

1. **Durability and Saltwater Resistance** The "Saltwater" designation means this propeller is designed to withstand corrosion from saltwater exposure, making it ideal for boats that operate in marine environments. It is typically made from high-quality stainless steel or other corrosion-resistant materials.

2. **Optimized for Yamaha Outboards** This propeller is specifically engineered for Yamaha marine engines, ensuring compatibility in terms of shaft diameter, blade design, and performance tuning. Yamaha s proprietary blade shapes often improve fuel efficiency and power delivery.

3. **XL (Extra Large) Blade Design** The "XL" designation suggests larger blade area compared to standard propellers, which can improve thrust and reduce cavitation, especially in high-performance or heavy-load applications. This is beneficial for boats that require strong acceleration or towing capacity.

4. **Counter-Rotating (LH) Configuration** The left-hand (LH) counter-rotating design reduces torque effects, improving handling stability and reducing wear on the engine and transmission. This is particularly useful for boats with high horsepower or those that require precise control.

5. **Pitch Matching for Performance** The 15.5" x 21" pitch is tailored for specific boat types (likely mid-sized performance boats or fishing vessels). A higher pitch (21") suggests better high-speed efficiency, while the blade diameter (15.5") balances acceleration and top-end speed. This can enhance fuel economy and reduce strain on the engine.

6. **Reduced Vibration and Smooth Operation** Yamaha propellers are often designed with precision to minimize vibration, which can extend the lifespan of the engine and improve rider comfort.

7. **Compatibility with Yamaha s Propeller System** Yamaha s propellers are designed to work seamlessly with their engines, often featuring optimized blade angles and materials for reduced drag and improved efficiency.

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#### **Cons:**

1. **Cost** High-quality marine propellers, especially those designed for saltwater and optimized for performance, can be expensive. The price may be significantly higher than generic or aftermarket alternatives.

2. **Specialized Fitment** While this propeller is designed for Yamaha engines, it may not be compatible with non-Yamaha outboards unless the shaft diameter and mounting points match exactly. This limits flexibility if you ever switch engine brands.

3. **Potential for Wear Over Time** Even saltwater-resistant propellers can suffer from pitting, corrosion, or blade damage over time, especially in rough conditions. Regular maintenance and inspection are required to ensure longevity.

4. **Weight** Larger, high-performance propellers like this one can be heavier than standard options. This may slightly reduce fuel efficiency during acceleration or affect handling dynamics.

5. **Limited Availability of Replacements** If the propeller fails, finding an exact replacement (especially for older Yamaha models) may be challenging, depending on the region and dealer network.

6. **Potential for Mismatch with Boat Type** If the boat s intended use (e.g., deep-sea fishing, cruising, or wakeboarding) doesn t align perfectly with the propeller s pitch and diameter, performance may not be optimal. For example, a propeller too fine for a heavy load may struggle with acceleration.

7. **Installation Complexity** Replacing a propeller requires removing the engine trim tab and securing the propeller to the shaft, which may require specialized tools or professional assistance, adding to the cost.

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### **Conclusion:**

The Yamaha 6AX-45974-00-00 Saltwater XL 15.5" x 21" LH counter-rotating propeller is a high-performance, durable option tailored for Yamaha outboards operating in saltwater. Its advantages lie in its corrosion resistance, optimized thrust, reduced vibration, and compatibility with Yamaha s engine systems. However, the cost, specialized fitment, and potential maintenance requirements are drawbacks to consider.

This propeller is best suited for:

- Boats that operate frequently in saltwater (e.g., fishing boats, cruisers, or performance vessels).

- Owners who prioritize engine efficiency, smooth operation, and long-term durability.

- Those who are committed to Yamaha engines and want a factory-tuned propeller.

If you are on a tight budget, frequently switch between freshwater and saltwater, or have a non-Yamaha engine, a more generic or aftermarket propeller might be a better alternative.

### **Recommendation:**

If you own a Yamaha outboard and your boat operates primarily in saltwater, this propeller is an excellent choice for maximizing performance, reducing maintenance headaches, and ensuring compatibility. However, carefully assess your boat s specific needs (e.g., towing capacity, speed requirements, and load conditions) to confirm that the 15.5" x 21" pitch is ideal for your use case. If in doubt, consult a Yamaha dealer or marine mechanic to verify fitment and performance expectations. For non-saltwater use or budget constraints, explore Yamaha s freshwater propellers or high-quality aftermarket alternatives.

Details:

part #: 6ax459740000 prices

  • $350.00-$425.00

specifications propboapar:

  • for makes: Yamaha
  • for years: 2015-2021
  • mpn: 6ax-45974-00-00
  • part type: Counter Prop Propeller
  • propeller rotation: Counter

returns propboapar:

  • policy: No Returns

seller propboapar:

  • rating: 99.4%
  • # reviews: 3699
  • city: Stuart, Florida

offer propboapar:

  • availability: In Stock
  • quantity: 1
  • started: April 30, 2026
  • best offers: True
  • sold: 0
  • options: Ship-to-home

shipping propboapar:

  • cost: $25.00
  • carrier: FedEx
  • transit: 4-8 Days
  • type: Fixed
  • class: Standard
  • service: FedEx Ground / FedEx Home Delivery

general propboapar:

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

payments propboapar:

  • other
  • wallet: Apple-pay
  • credit card: Visa
for makes: yamaha, for years: 2015-2021, part type: counter prop propeller, propeller rotation: counter,
category: boat parts > propellers, sku: 12471990094290871,
Yamaha 6AX-45974-00-00 Is Similar To:
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2 offers $350.00–$425.00 USD
  • Used. Offer #1 priced at $350.00 + $25.00 shipping estimate = $375.00* total. +$25.00 shipping
  • Used. Offer #2 priced at $425.00 + $0.00 shipping estimate = $425.00* total. USED AND IN GOOD CONDITION. YAMAHA SALTWATER SERIES"LEFTHAND"STAINLESS PROP.FREE SHIPPING

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