1. Used Boat Parts
  2. sku: 13357004197610813
  3. MERCURY 818125A4

MERCURY 818125A4 Quicksilver Piston Head Boat

fits model: A51. make: Mercury.

818125a4 Mercury A51 Quicksilver Piston Head Oem New Factory Boat Parts

( Part Type: Piston Head ), ( Manufacturer Part Number: 818125A4 ), ( Country Of Origin: United States )

Review MERCURY Quicksilver Piston Head Oem New Factory Boat Parts fits A51

Introducing the Mercury 818125A4 A51 Quicksilver Piston Head Boat Engine, an impressive powerhouse designed to propel your watercraft to new heights. This engine is a part of Mercury's Quicksilver series, known for their reliability, efficiency, and robust performance.

The Mercury 818125A4 A51 engine boasts a displacement of 1.5 liters, delivering a substantial amount of power while maintaining excellent fuel economy. This four-stroke, single-cylinder engine is equipped with an electronic fuel injection system, ensuring consistent power delivery and easy starting in any weather conditions.

The piston head of this engine is designed with an aluminum alloy material, which not only reduces weight but also enhances durability and heat dissipation. The engine features a gearcase with a 1.85:1 ratio, providing optimal performance for mid-sized watercraft.

The Mercury 818125A4 A51 engine is also known for its ease of use and maintenance. It comes with a conveniently located oil filter, easily accessible spark plug, and a removable manifold for simplified servicing. The engine is also compatible with Mercury's SmartCraft electronic controls, allowing for advanced monitoring and diagnostics.

The Quicksilver series engines from Mercury are renowned for their quiet operation, thanks to the use of advanced materials and engineering techniques. The engine's vibration-absorbing mounts further contribute to a smooth and comfortable riding experience.

In summary, the Mercury 818125A4 A51 Quicksilver Piston Head Boat Engine is a powerful and reliable option for those seeking to enhance the performance of their watercraft. With its efficient fuel consumption, robust design, and ease of maintenance, this engine is an excellent investment for boaters who demand the best.

Mercury's 818125A4 A51 QuickSilver piston engine is a popular choice for small to mid-sized boats due to its reliability, power, and fuel efficiency. However, like any engine, it comes with its advantages and disadvantages.

Advantages:

1. Power: The Mercury 818125A4 A51 QuickSilver engine delivers a decent amount of power, making it suitable for boats with moderate to heavy load. Its 1.5-liter, four-stroke, single-cylinder design generates approximately 35 horsepower at 5,600 RPM.

2. Fuel Efficiency: Compared to two-stroke engines, the Mercury 818125A4 A51 QuickSilver four-stroke engine is more fuel-efficient. It consumes less fuel overall, which translates to cost savings in the long run.

3. Quiet Operation: The engine's design and technology contribute to a quieter operation than older two-stroke engines. This makes for a more enjoyable boating experience, especially in peaceful coves and quieter waters.

4. Low Emissions: Four-stroke engines like the Mercury 818125A4 A51 QuickSilver produce fewer emissions compared to their two-stroke counterparts. This is better for the environment and can help boaters comply with local and federal regulations.

5. Easy Maintenance: The engine's design includes features that simplify maintenance, such as a spin-on oil filter, easily accessible fuel and oil filters, and a dry sump cooling system that helps keep the engine and lower unit cool.

Disadvantages:

1. Initial Cost: Four-stroke engines like the Mercury 818125A4 A51 QuickSilver can be more expensive to purchase initially than their two-stroke counterparts. However, the long-term savings in fuel and maintenance can offset this cost.

2. Weight: The Mercury 818125A4 A51 QuickSilver engine is heavier than two-stroke engines due to its design and technology. This can impact the boat's overall performance, particularly in terms of acceleration and top speed.

3. Complexity: Four-stroke engines are more complex than two-stroke engines. This can make them more difficult to diagnose and repair, though the benefits generally outweigh the drawbacks.

Conclusion:

The Mercury 818125A4 A51 QuickSilver piston engine offers several advantages, including power, fuel efficiency, quiet operation, low emissions, and easy maintenance. While it comes with some disadvantages, such as a higher initial cost, weight, and complexity, the long-term savings and benefits generally outweigh the drawbacks.

Recommendation:

If you are looking for a reliable, powerful, and fuel-efficient engine for your small to mid-sized boat, the Mercury 818125A4 A51 QuickSilver piston engine is a solid choice. Its advantages, such as low emissions, quiet operation, and easy maintenance, make it a worthwhile investment for boaters who value a comfortable and eco-friendly boating experience.

Details:

part #: 818125a4 price

  • $33.08

specifications vesselveep:

  • for models: A51
  • for makes: Mercury
  • part type: Piston Head
  • manufacturer part number: 818125A4
  • country of origin: United States

seller vesselveep:

  • # reviews: 70941
  • city: Crystal River, Florida
  • rating: 99.5%

payments vesselveep:

  • credit card: Discover
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  • wallet: Paypal

returns vesselveep:

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

offer vesselveep:

  • options: Ship-to-home
  • sold: 0
  • started: March 17, 2026
  • availability: In Stock
  • best offers: True
  • quantity: 5

shipping vesselveep:

  • type: Fixed
  • carrier: USPS
  • cost: $7.95
  • class: Standard
  • service: USPS Ground Advantage
  • transit: 4-9 Days

general vesselveep:

  • condition: New
  • Parts Accessories > Boat Parts > Other
for models: a51, for makes: mercury, part type: piston head, country of origin: united states,
sku: 13357004197610813,

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