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  3. MERCURY 48-79578-23

MERCURY 48-79578-23 Prop Rh 13.5X23 3B

fits make: Mercury.

48-79578-23 Mercury Used Prop 13.5x23 3b Rh

( Manufacturer Part Number: 48-79578-23 ), ( Part Type: Prop ), ( Diameter: 13.5 ), ( Hub-fixed Rubber: 15 Splines ), ( Propeller Rotation: Standard ), ( Country Of Origin: United States ), ( Material: Aluminum )

Review MERCURY Used Prop 13.5x23 3b Rh

The **Mercury 48-79578-23 Prop 13.5x23 3-Blade RH** is a high-performance propeller designed for maximum efficiency and reliability in marine applications, particularly tailored for outboard engines ranging from 150 to 250 horsepower. Crafted from premium-grade aluminum alloy, this three-blade propeller features a robust, corrosion-resistant construction that ensures durability even in the harshest saltwater environments. The **13.5-inch diameter** and **23-inch pitch** dimensions strike an optimal balance between acceleration and top-end speed, making it an ideal choice for boats seeking a blend of quick response and sustained cruising performance. The **right-hand (RH) rotation** ensures seamless compatibility with standard outboard engines, minimizing vibration and maximizing smooth operation.

The propeller s **3-blade design** enhances thrust efficiency, reducing drag while delivering superior power transfer, which is particularly beneficial for anglers, fishing charters, and recreational boats where both speed and fuel economy are priorities. The **propeller s pitch of 23 inches** is engineered to optimize acceleration and climbing ability, allowing the boat to quickly reach and maintain higher speeds with minimal strain on the engine. This makes the 48-79578-23 an excellent option for boats that require a mix of agility and endurance, whether navigating through choppy waters or cruising at sustained velocities.

Mercury s proprietary manufacturing process ensures precise blade shaping and balancing, which minimizes noise and vibration key factors in enhancing passenger comfort and reducing engine wear over time. The propeller s **smooth, aerodynamic contours** also contribute to reduced cavitation, further extending its lifespan and maintaining peak performance. Whether used in a high-performance fishing vessel, a speedboat, or a versatile recreational craft, this propeller delivers a reliable and efficient propulsion solution that meets the demands of modern boating. Built to withstand the rigors of daily use, the **48-79578-23** is a dependable investment for those seeking a balance of speed, efficiency, and durability in their marine setup.

### **Pros and Cons of buying a Mercury 48-79578-23 Prop (13.5x23, 3-Blade RH)**

#### **Pros:**

1. **Proven Reliability** The Mercury 48-79578-23 is a well-established model known for durability, especially in marine and outdoor applications. It has been widely used for decades, meaning it has undergone extensive testing and refinement.

2. **High Performance** This prop is designed for efficiency, offering strong thrust and good cavitation resistance. It works well in various conditions, including freshwater and saltwater, making it versatile for different environments.

3. **Compatibility** The 13.5x23 pitch and 3-blade design are common in medium to large outboard motors (typically 150 300 HP range). It fits well with Mercury, Evinrude, and other major brands, ensuring easy replacement if needed.

4. **Durability** Made from high-quality materials, this prop is built to withstand wear from debris, saltwater corrosion, and heavy use. The 3-blade design distributes stress more evenly than some 2-blade props.

5. **Ease of Maintenance** The design allows for straightforward cleaning and inspection, reducing downtime. Many users report that it holds up well with basic upkeep.

6. **Good Thrust-to-Efficiency Ratio** The 13.5-inch pitch provides a balance between speed and power, making it suitable for both cruising and light planing. It s not overly aggressive, which helps with fuel efficiency.

7. **Aftermarket Availability** Due to its popularity, replacement parts, remanufactured units, and customizations (like different blade angles) are widely available.

8. **Lower Cost Compared to High-Performance Props** While not the cheapest option, it offers a strong balance between price and performance, making it a cost-effective choice for many boaters.

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#### **Cons:**

1. **Age of Design** This prop was introduced in the late 1970s/early 1980s, meaning it lacks some modern advancements like hydrodynamic optimizations seen in newer designs. It may not be as efficient as contemporary props in terms of fuel savings or speed.

2. **Potential for Wear Over Time** Like any prop, it will degrade with use, especially if exposed to saltwater or rough conditions. The blades may develop nicks or corrosion, reducing performance over time.

3. **Limited Customization** Unlike newer props with adjustable or interchangeable blades, this model has a fixed design. If your boat s needs change (e.g., shifting from cruising to racing), you may need to replace it entirely.

4. **Weight** Older props tend to be heavier than modern lightweight alternatives. This can slightly impact handling and maneuverability, though the difference is usually minor.

5. **Compatibility Issues with Modern Engines** Some newer, high-performance outboards may not pair as efficiently with this older prop design, potentially leading to slightly reduced performance or increased fuel consumption.

6. **Remanufacturing Quality Varies** If purchasing a used or remanufactured unit, the quality can vary significantly. Some remanufacturers may not restore it to the same level as a new prop, leading to premature wear.

7. **Less Aerodynamic Efficiency** Modern props often feature smoother blade shapes and materials that reduce drag and improve efficiency. This prop, while functional, may not match the performance of newer designs in terms of speed or fuel economy.

8. **Potential for Cavitation Damage** While it resists cavitation better than some props, prolonged use in high-load conditions (e.g., towing or aggressive planing) can still cause pitting or erosion over time.

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### **Conclusion and Recommendation**

The **Mercury 48-79578-23 prop** is a solid, reliable choice for boaters who prioritize durability and proven performance over cutting-edge efficiency. It excels in general cruising, fishing, and light recreational use, particularly for older or medium-sized outboards. If you re running a boat that doesn t require extreme speed or fuel efficiency, this prop will serve you well for many years with proper maintenance.

However, if you re looking for **maximum performance, fuel savings, or planing capability**, a newer prop with advanced hydrodynamic features (e.g., Mercury s current 4-blade or 5-blade designs) would be a better investment. These modern props offer improved efficiency, reduced vibration, and better handling in high-speed conditions.

**Recommendation:**

- **Buy it if:** You need a dependable, cost-effective prop for a boat that doesn t demand top-tier performance, and you re okay with occasional maintenance to keep it running smoothly.

- **Avoid it if:** You re running a high-performance outboard, plan to tow frequently, or want the latest in fuel efficiency and speed. In that case, consider a newer, more advanced prop design.

- **Consider alternatives:** If you re unsure, test a few different props (if possible) or consult a marine mechanic to ensure this model aligns with your boat s specific needs.

Ultimately, this prop is a **safe, practical choice for general use**, but modern alternatives may offer better long-term benefits for performance-oriented boaters.

Details:

The USED MERCURY PROP 13.5X23 3B RH 48-79578-23 is a high-quality propeller made by Mercury, designed for boats with 13.5 diameter and 15 splines. Made of durable aluminum, this propeller is manufactured in the USA and comes with no warranty, but it a reliable choice for ensuring optimal performance on water. This propeller features three blades and a pitch of 23 inches, making it suitable for various boat sizes operating conditions.

part #: 487957823 prices

  • $95.00-$195.00

specifications propboapar:

  • for makes: Mercury
  • mpn: 48-79578-23
  • part type: Prop
  • diameter: 13.5
  • hub-fixed rubber: 15 Splines
  • propeller rotation: Standard
  • country of origin: United States
  • material: Aluminum

offer propboapar:

  • quantity: 1
  • started: March 11, 2026
  • availability: In Stock
  • best offers: True
  • options: Ship-to-home
  • sold: 0

general propboapar:

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

seller propboapar:

  • city: Brillion, Wisconsin
  • # reviews: 195
  • rating: 98.9%

shipping propboapar:

  • class: Standard
  • type: Fixed
  • carrier: USPS
  • cost: $16.00
  • service: USPS Ground Advantage
  • transit: 3-8 Days

returns propboapar:

  • policy: No Returns

payments propboapar:

  • wallet: Apple-pay
  • credit card: Diners-club
  • other
for makes: mercury, part type: prop, diameter: 13.5, hub-fixed rubber: 15 splines, propeller rotation: standard, country of origin: united states,
category: boat parts > propellers, material: aluminum, sku: 12247803711437721,
Mercury 48-79578-23 Is Similar To:
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2 offers $95.00–$195.00 USD
  • Used. Offer #1 priced at $95.00 + $16.00 shipping estimate = $111.00* total. Made of durable aluminum, this propeller is manufactured in the United States and comes with no warranty, but it is a reliable choice for ensuring optimal performance on the water. The USED MERCURY PROP 13.5X23 3B RH ( ) is a high-quality propeller made by Mercury, designed for boats with a 13.5" diameter and 15 splines.+$16.00 shipping
  • Remanufactured. Offer #2 priced at $195.00 + $16.25 shipping estimate = $211.25* total. Made of aluminum and manufactured in the United States, this propeller is designed for standard rotation The product is a USED Mercury propeller with a 13.5" diameter, 3 blades, 15 spline hub-fixed rubber, and a pitch of 23".+$16.25 shipping

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