MERCURY Pitch Boat Prop Outboard 48-67280A4 40-140

( Manufacturer Part Number: 67280A4 ), ( Part Type: Hp Prop ), ( Propeller Rotation: Standard ), ( Propeller Pitch: 23 )

Review MERCURY Pitch Boat Prop 40-140 Hp And Outboard fits MARINER 2013–2021

The **Mercury 48-67280A4 13x21 Pitch Boat Propeller** is a precision-engineered, high-performance propeller designed specifically for **Mariner outboard motors ranging from 40 to 140 horsepower**, delivering optimal thrust, efficiency, and reliability for both recreational and performance-driven boating applications. Crafted from **high-grade, corrosion-resistant stainless steel**, this propeller is built to withstand the harshest marine environments, ensuring long-lasting durability while maintaining peak performance under varying load conditions. The **13-inch diameter and 21-inch pitch** combination strikes an ideal balance between acceleration and cruising efficiency, making it an excellent choice for boats requiring a versatile propeller that excels in both planing and deep-V applications. Whether you're accelerating quickly off the dock, maintaining steady speeds on open water, or navigating through choppy conditions, this propeller s carefully optimized blade design minimizes cavitation and vibration, reducing wear on the motor while maximizing fuel economy and handling responsiveness. The **four-blade configuration** provides a smooth, balanced thrust curve, enhancing stability and control, particularly in larger, heavier boats where smooth operation is critical. Ideal for **fishing boats, cruisers, and performance vessels**, this propeller is engineered to handle the demands of daily use without compromising on performance, making it a dependable upgrade for those seeking a reliable, high-efficiency propeller that delivers consistent power and smooth operation across a wide range of marine applications.

The **Mercury 48-67280A4 13-Pitch Propeller** (also referred to as the **67280A4 48-67280A4 13** in some listings) is designed for **40 140 HP Mercury outboards**, particularly those in the **40 60 HP and 70 140 HP ranges** (depending on model year and application). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Mercury 67280A4 13-Pitch Propeller**

1. **Versatile Power Range**

- Suitable for a wide range of **40 140 HP Mercury outboards**, making it a flexible choice for boats that may have varying power requirements or future upgrades. This includes models like the **Mercury 40 60 HP (e.g., Verado, FourStroke) and 70 140 HP (e.g., FourStroke, Verado, Bravo)**.

2. **Balanced Performance for Cruising and Planing**

- The **13-pitch** designation suggests it is optimized for **moderate-speed cruising** while still being capable of **planing** under higher loads. This makes it ideal for **recreational fishing boats, cruisers, and utility boats** where both efficiency and speed are needed.

- The **48-inch diameter** provides a good balance between acceleration and top-end speed, avoiding the excessive drag of larger props or the sluggishness of smaller ones.

3. **Durability and Reliability**

- Mercury propellers are built to withstand **corrosion, abrasion, and impact** from debris, saltwater, and rough handling. The **stainless steel construction** (assuming standard Mercury quality) ensures longevity, especially in marine environments.

- Designed to handle **moderate to heavy loads**, reducing the risk of bending or damage during normal operation.

4. **Compatibility with Common Boat Types**

- Works well with **center console, deck boats, and mid-size cruisers** where a **medium-pitch propeller** is preferred. It is less aggressive than a low-pitch prop (e.g., 10-pitch) and more efficient than a high-pitch (e.g., 16-pitch) for general use.

5. **Easier to Maintain Than Custom Props**

- Unlike custom-machined props, this is a **stock or aftermarket option** that can be easily sourced and replaced without extensive modifications. It fits standard Mercury outboard mounts.

6. **Good for Beginners or Occasional Users**

- If you re not sure about the exact pitch needed, this propeller offers a **safe middle ground** that won t severely limit performance while still being effective.

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### **Cons of the Mercury 67280A4 13-Pitch Propeller**

1. **Not Optimized for High-Speed Racing or Extreme Performance**

- A **13-pitch propeller** is **not ideal for high-speed planing** (e.g., wakeboarding, skiing, or top-speed cruising). For these applications, a **lower pitch (e.g., 10 12)** would provide better acceleration and top-end speed.

- If your primary use involves **high-speed maneuvers**, this prop may feel sluggish or require more RPM to reach optimal speeds.

2. **May Feel "Soft" Under Heavy Loads**

- Some users report that a **13-pitch prop** can **lose efficiency** when carrying **excessive weight** (e.g., heavy anglers, large trailers, or overloaded boats). In such cases, a **lower pitch (e.g., 11 12)** might improve acceleration.

- If your boat frequently operates at **maximum load**, you may experience **reduced speed or poor handling**.

3. **Potential for Cavitation at High RPM**

- On **higher-HP outboards (e.g., 100 140 HP)**, a **13-pitch prop** may **cavitate** (lose efficiency due to air bubbles forming on the blades) if the engine is revved too high. This can lead to **reduced power and noise**.

- A **lower pitch (e.g., 10 11)** would be better for **high-HP applications** where maximum speed is desired.

4. **Not Ideal for Deep-V or Planing Hulls Without Tuning**

- While this prop works well on **displacement hulls**, **deep-V or aggressive planing hulls** may benefit from a **lower pitch** (e.g., 10 12) for better acceleration off the line.

- If your boat is **narrow or designed for speed**, this prop might not deliver the **sharp response** you d get with a more aggressive pitch.

5. **May Require Adjustment for Different Boat Weights**

- The **optimal pitch** can vary based on **boat weight, load, and hull design**. If your boat is **lightly loaded**, a **13-pitch may be too high**, causing the engine to struggle. Conversely, if it s **heavily loaded**, it may feel too soft.

- Some users find they need to **switch props seasonally** (e.g., a lower pitch for summer, higher for winter) to match changing conditions.

6. **Potential for Wear Over Time**

- Like all propellers, this one will **wear down** from **corrosion, impingement (debris hitting the blades), or cavitation**. Mercury props are durable, but **regular inspections and maintenance** are necessary to prevent damage.

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### **Conclusion**

The **Mercury 67280A4 13-Pitch Propeller** is a **solid, all-around choice** for **40 140 HP Mercury outboards**, particularly for **recreational fishing, cruising, and general boating** where a **balanced pitch** is desired. It excels in **moderate-speed operation** and provides **reliable performance** for everyday use.

- **High-speed planing** (racing, wakeboarding, skiing).

- **Heavily loaded boats** (without tuning).

- **Deep-V or aggressive planing hulls** (may need a lower pitch).

- **Engines running at very high RPMs** (risk of cavitation).

If your primary use involves **speed, heavy loads, or extreme conditions**, a **different pitch (e.g., 10 12 for speed, 14 16 for cruising)** would likely be more suitable.

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### **Recommendation**

- You need a **versatile, all-purpose prop** for **40 140 HP Mercury outboards**.

- Your boat is a **displacement or semi-planing hull** used for **fishing, cruising, or light utility**.

- You want a **balanced compromise** between speed and efficiency without extreme tuning.

- You **prioritize speed and acceleration** Try a **10 12 pitch** (e.g., **67280A4 10 or 11**).

- Your boat is **heavily loaded or a deep-V hull** A **lower pitch (e.g., 10 11)** would improve performance.

- You **race or ski frequently** A **custom or lower-pitch prop** (e.g., **Mercury 48x10 or 48x11**) is better.

- You **plan to upgrade HP significantly** A **new prop tuned to the higher power** will be more efficient.

- **Inspect the prop regularly** for **nicks, corrosion, or blade damage**, especially after running in **rough conditions or with heavy loads**.

- **Clean it after each use** if stored in saltwater to prevent pitting.

- If performance degrades, consider **retrimming** or **replacing** the prop to match your boat s current load.

The **Mercury 67280A4 13-Pitch Propeller** is a **good default choice** for most **40 140 HP Mercury outboards** in **moderate-use scenarios**, but **not the best for high-performance or extreme applications**. If you re unsure, testing it for a season and comparing it to a **lower-pitch option** (e.g., 10 or 11) may help determine the best fit for your specific boat and usage.

Details:

MPN: 67280A4 48-67280A4. This prop Does Not include hardware. 4 1/4 inch gear case bullet, Rubber Hub System Built In. Brand: Mercury.

This sale is for one refurbished prop Mercury and Mariner outboards, part number: 48-67280A4, Aluminum, 3 blades Cupped, 13 inch diameter, 21 pitch, Right Hand rotation Standard Clockwise Rotation, Fits 15 Tooth Spline Propeller shaft. The pitch of the propeller is extremely important. Casting Number: 48-67280-21. You can use your old stepped thrust washer with it.

part #: 67280a4 prices

• $35.00-$109.95

specifications propboapar:

• for models: Mariner
• for makes: Mercury
• for years: 2013-2021
• mpn: 67280a4
• part type: Hp Prop
• propeller rotation: Standard
• propeller pitch: 23

offer propboapar:

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

payments propboapar:

• credit card: Discover
• other
• wallet: Apple-pay

returns propboapar:

• policy: No Returns

shipping propboapar:

• cost: $24.45
• class: Standard, Expedited, One-day
• transit: 3-9 Days
• carrier: USPS, UPS
• service: USPS Ground Advantage, USPS Priority Mail, UPS Ground, UPS Next Day Air Saver
• type: Calculated

general propboapar:

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

seller propboapar:

• city: Suamico, Wisconsin
• rating: 99.7%
• # reviews: 29634

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