MERCURY 48-29296-11 Antique Outboard Motor Propeller Splines MK55 MK58 MERC400

( Manufacturer Part Number: 48-29296-11 ), ( Part Type: Motor Propeller ), ( Propeller Rotation: Rh ), ( Country Of Origin: United States )

Review MERCURY Antique Outboard Motor Propeller Splines fits 1956-62–2011

The **Mercury 48-29296-11 Antique Outboard Motor Propeller** is a meticulously crafted, high-performance marine propeller designed specifically for Mercury s legendary **MK55, MK58, and Merc400 outboard engines** from the classic **1956 to 1962 production era**. This propeller features the original **splined shaft connection**, ensuring a secure and precise fit that aligns perfectly with the engine s internal drive system, preserving the authenticity and functionality of these mid-century powerplants. Crafted from high-grade **marine-grade aluminum**, the propeller blades are precision-machined to deliver optimal thrust and efficiency, allowing these vintage engines to operate at their peak performance while maintaining the original aesthetic and mechanical integrity. The **five-blade design** of the MK55 and MK58 models, along with the robust construction of the Merc400 variant, ensures smooth acceleration, improved fuel economy, and reduced vibration key factors that enhance both the driving experience and the longevity of the engine. Whether restoring a classic Mercury-powered boat or maintaining one for recreational use, this propeller is an essential component that bridges the gap between modern reliability and historical authenticity. Its **universal fitment** across multiple engine models makes it a versatile upgrade for collectors, enthusiasts, and restorers seeking to revive the performance of these iconic outboards while preserving their timeless charm.

### **Pros and Cons of buying a Mercury 48-29296-11 Antique Outboard Motor Propeller (MK55/MK58/Merc400, 1956 62, Splines)**

1. **Historical and Collectible Value** This propeller is part of an early Mercury outboard series, making it desirable for vintage boat enthusiasts, collectors, or restorers. Original or well-preserved parts from this era can appreciate in value over time.

2. **Functional Compatibility** If you own or restore a Mercury Merc400 (or similar 1956 62 model), this propeller is a direct replacement, ensuring proper fit and performance without modifications.

3. **Rarity** Many original Mercury parts from this era are difficult to find, especially with the correct splined shaft connection. Owning one ensures you won t have to hunt for replacements in the future.

4. **Restoration Potential** If the propeller is worn or damaged, it may be repairable or refinable, allowing you to restore it to near-new condition with proper care.

5. **Nostalgia and Craftsmanship** Early Mercury outboards were built with solid construction techniques, and this propeller reflects that durability. For those who appreciate mechanical history, it s a tangible piece of automotive heritage.

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1. **High Cost Relative to Modern Alternatives** Vintage Mercury parts, especially those in good condition, can be expensive compared to modern propellers. If you only need it for occasional use, the cost may not justify the investment.

2. **Limited Availability of Replacement Parts** If the propeller fails or wears out, finding exact replacements (especially for splined shafts) can be challenging. You may need to source from specialty dealers or collectors.

3. **Maintenance Challenges** Older propellers can be prone to corrosion, pitting, or shaft wear over time. Regular cleaning, drying, and inspection are required to prevent further damage.

4. **Performance Limitations** Compared to modern propellers, this design may not offer the same efficiency, speed, or fuel economy. If you prioritize performance over authenticity, a newer propeller might be preferable.

5. **Potential for Counterfeit or Mismatched Parts** The vintage market has some fakes or mismatched parts. Ensure the propeller is authentic (check serial numbers, markings, and condition) before purchasing.

6. **Storage and Handling Risks** Rust and corrosion can develop quickly if the propeller is stored improperly (e.g., in damp conditions). It requires careful handling to prevent damage.

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- You own or restore a 1956 62 Mercury Merc400 or similar model and need an exact replacement.

- You value historical authenticity and are willing to invest in preserving a piece of boating history.

- You re prepared for the potential costs of maintenance, sourcing parts, and storage.

- You prioritize modern performance over vintage compatibility.

- You don t have the time or budget for proper maintenance and restoration.

- You can find a reliable modern alternative at a lower cost.

If you re certain about the propeller s authenticity and condition, proceed with purchase especially if you re restoring a classic boat. However, **verify the propeller s history, check for corrosion, and confirm spline compatibility** before buying. If you re unsure about long-term maintenance, consider consulting a marine mechanic or vintage outboard specialist.

For most casual boaters, a modern propeller would be a more practical and cost-effective choice, but for enthusiasts, this is a valuable addition to a collection.

Details:

A good used Mercury antique outboard motor propeller. The prefect propeller for 14-17ft runabouts with 2-4 passengers. Fits 4 cylinder Mercury outboards model's: MK55, MK55A, MK35A, MK58, MK58A and Merc300 Merc350, Merc400 Merc500 WITHOUT thru hub exhaust. No longer available from Mercury Marine.

part #: 482929611 prices

• $19.95-$74.95

specifications propboapar:

• for makes: Mercury
• for years: 1956-62-2011
• mpn: 48-29296-11
• part type: Motor Propeller
• propeller rotation: Rh
• country of origin: United States

returns propboapar:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

seller propboapar:

• rating: 100.0%
• city: Altadena, California
• # reviews: 6303

payments propboapar:

• credit card: Mastercard
• other
• wallet: Paypal

general propboapar:

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

offer propboapar:

• quantity: 1
• sold: 0
• started: February 3, 2026
• options: Ship-to-home
• availability: In Stock

shipping propboapar:

• transit: 3-8 Days
• type: Calculated
• class: Standard
• service: USPS Ground Advantage
• cost: $16.95
• carrier: USPS

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