1. Boat Outboard Engines To Buy
  2. sku: 16654275408451632
  3. MERCURY 8784A1

MERCURY 8784A1 Crankshaft Bearings 275 3.4L V6

fits model: 250, 300. make: Mercury. year: 1983–1987.

8784a1 Mercury 1983 1984 1985 1986 1987 Crankshaft And Bearings 250 275 300 Hp 3.4l V6

( Manufacturer Part Number: 8784A1 ), ( Part Type: Bearing Hp Crankshaft ), ( Country Of Manufacture: United States ), ( Donor Motor: 0d090626 )

Review MERCURY Crankshaft And Bearings 275 Hp 3.4l V6 fits 250 300 1983–1987

Mercury 8784A1 Crankshaft Bearings: Comprehensive Upgrade Solution for 3.4L V6 Engines (1983-1987)

The Mercury 8784A1 Crankshaft Bearings offer a perfect fit and exceptional performance for Mercury Marine's 3.4L V6 engines, specifically models from 1983 to 1987. These bearings are designed to accommodate engines rated at 250, 275, and 300 horsepower, making them suitable for a wide range of applications.

Crafted with precision engineering, the Mercury 8784A1 Crankshaft Bearings ensure superior durability and resistance to wear, even under heavy load conditions. The bearings are made from high-quality materials that deliver outstanding performance and reliability, ensuring smooth and quiet operation of your engine.

Each bearing features a robust design with an optimized fit, ensuring a secure connection between the crankshaft and the engine block. The bearings are pre-lubricated, reducing the need for frequent maintenance and extending the overall lifespan of your engine.

Installing the Mercury 8784A1 Crankshaft Bearings is a straightforward process. The bearings come with clear installation instructions, making it easy for both professional mechanics and DIY enthusiasts to replace worn-out bearings.

By choosing the Mercury 8784A1 Crankshaft Bearings, you are not only ensuring the continued performance of your 3.4L V6 Mercury Marine engine, but also investing in a reliable and cost-effective solution for maintaining the efficiency of your watercraft. Whether you are a seasoned boat owner or a first-time DIY mechanic, these bearings are a smart investment that will deliver peace of mind and a smooth ride for years to come.

Analysis of Mercury 8784a1 Crankshaft Bearings for 250-300 HP 3.4L V6 Engines

Pros:

1. Compatibility: These bearings are specifically designed for Mercury 8784a1 engines, ensuring a precise fit and optimal engine performance.

2. Durability: The bearings are engineered to withstand the high torque and horsepower output of the engines, providing a long service life.

3. Wide Application Range: The bearings are suitable for various horsepower ratings, from 250 HP to 300 HP, making them versatile for different engine conditions.

4. Availability: Being a well-known part for Mercury engines, these bearings are readily available from various automotive parts suppliers.

Cons:

1. Potential Wear and Tear: As with any engine part, these bearings are subject to wear and tear over time, which may necessitate replacement.

2. Quality Variability: Depending on the supplier, the quality of the bearings may vary, potentially affecting their performance and lifespan.

3. Installation Complexity: Installing crankshaft bearings requires specialized tools and skills, which may pose a challenge for some engine owners.

Conclusion:

The Mercury 8784a1 crankshaft bearings offer a reliable solution for maintaining or restoring the performance of 250-300 HP 3.4L V6 engines. However, it's crucial to ensure that you purchase from a reputable supplier to guarantee quality and longevity. If you are comfortable with the installation process or have access to a competent mechanic, these bearings can be a valuable investment for your engine.

Recommendation:

When purchasing these bearings, conduct thorough research on the supplier to ensure they offer high-quality products. If you are unsure about the installation process, consider engaging a professional mechanic to ensure proper installation and avoid any potential issues down the line.

Details:

Fits: 1983 - 1987 - 3.4L 250 275 300 HP. Cowling Covers. Splines are in good condition. Layaway Plan.

The item you are looking at is guaranteed to be described, pictured, and cross-referenced correctly. Johnson and Eventide. Altman, IL 62411. B earing surfaces show no signs of pitting or grooving.

Bargain Bin parts. However, please b e a solely sure this is the correct one for your motor prior to purchasing.

part #: 8784a1 prices

  • $300.00-$665.00

specifications ouboaen:

  • for models: 250, 300
  • for makes: Mercury
  • for years: 1983-1987
  • mpn: 8784a1
  • part type: Bearing Hp Crankshaft
  • country of manufacture: United States
  • donor motor: 0d090626

general ouboaen:

  • Boat Parts > Outboard Engines Components > Other
  • condition: Used

payments ouboaen:

  • wallet: Google-pay
  • credit card: Mastercard
  • other

seller ouboaen:

  • # reviews: 32166
  • city: Altamont, Illinois
  • rating: 99.7%

offer ouboaen:

  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • quantity: 1
  • started: June 17, 2025

returns ouboaen:

  • policy: No Returns

shipping ouboaen:

  • service: Standard
  • cost: $0.00
  • class: Standard
  • type: Fixed
  • transit: 4-8 Days
for models: 250, 300, for makes: mercury, for years: 1983-1987, part type: bearing hp crankshaft, country of manufacture: united states, donor motor: 0d090626,
category: boat parts > outboard engines components, sku: 16654275408451632,
Mercury 8784A1 Is Similar To:
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2 offers $300.00–$665.00 USD
  • Used. Offer #1 priced at $300.00 + $0.00 shipping estimate = $300.00* total. Condition: Used OEM, Freshwater Take-off. 3.4L Crankshaft.FREE SHIPPING
  • Used. Offer #2 priced at $665.00 + $0.00 shipping estimate = $665.00* total. Bargain Bin parts Fits: 1983-1987 - 3.4L 250 275 300 HP.FREE SHIPPING

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