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  3. MERCURY 8M2003946

MERCURY 8M2003946 Carburetor V8 5.0L 5.7L 2-BARREL P/n

fits model: Mercruiser. make: Mercury.

8m2003946 Mercury Mercury-mercruiser V8 5.0l 5.7l 2-barrel Carburetor P/n

( Manufacturer Part Number: 8M2003946 ), ( Part Type: Carburetor )

Review MERCURY mercruiser V8 5.0l 5.7l 2-barrel Carburetor P/n fits MERCRUISER

Detailed Product Description for Mercury 8M2003946 Mercury-Mercruiser V8 5.0L/5.7L 2-Barrel Carburetor

The Mercury 8M2003946 Mercury-Mercruiser V8 5.0L/5.7L 2-Barrel Carburetor is a premium marine powerhouse, meticulously engineered to deliver exceptional performance and reliability on the water. This high-output engine combines the power and torque needed for a thrilling boating experience, along with the fuel efficiency that boaters desire.

The 8M2003946 is available in two displacement options, 5.0L and 5.7L, offering versatility to suit a wide range of boating applications. The engine is equipped with a 2-barrel carburetor, ensuring a smooth and responsive power delivery. The carburetor design provides precise fuel-air mixtures for optimal combustion, which in turn contributes to the engine's overall efficiency and performance.

This Mercury-Mercruiser V8 engine is renowned for its robust and durable construction. The engine block is made from high-strength aluminum alloy, providing excellent heat dissipation and resistance to corrosion. The engine also features a sturdy crankshaft, forged pistons, and heavy-duty connecting rods, all designed to withstand the demanding marine environment.

The 8M2003946 is also equipped with advanced features for easy maintenance and trouble-free operation. The engine's accessories are driven by a single serpentine belt, reducing the number of belts required and simplifying maintenance tasks. The engine also features an easy-to-reach oil filter for quick and convenient oil changes.

In summary, the Mercury 8M2003946 Mercury-Mercruiser V8 5.0L/5.7L 2-Barrel Carburetor is a powerful and reliable marine engine, perfect for boaters who demand high performance and efficient operation. With its robust construction, smooth power delivery, and user-friendly maintenance features, this engine is an excellent choice for anyone seeking a thrilling and worry-free boating experience.

The Mercury 8M2003946 Mercury-Mercruiser V8, a 5.0L/5.7L 2-barrel carburetor engine, comes with its own set of advantages and disadvantages that you should consider before making a purchase.

Pros:

1. Powerful: This engine offers a substantial amount of power, making it suitable for mid-sized to large boats and providing a smooth ride.

2. Durable: Known for their longevity, Mercury engines are built to withstand harsh marine conditions, offering a long lifespan.

3. Replacement Parts Availability: Given the popularity of Mercury engines, finding replacement parts is generally easier compared to less common engine brands.

Cons:

1. Fuel Consumption: As a larger engine, it tends to consume more fuel, which can lead to higher operational costs.

2. Complexity: With multiple components, this engine can be more complex to maintain and repair, especially for those without mechanical expertise.

3. Carburetor-based: While the carburetor design is reliable, it may not meet the emission standards in some regions, and it requires more frequent tuning compared to modern fuel-injected engines.

In conclusion, the Mercury 8M2003946 is a reliable and powerful engine, but it comes with higher fuel consumption, complexity, and potential emissions issues due to its carburetor design. If you have the necessary knowledge for maintenance and are willing to pay for the fuel consumption, this engine could serve you well. However, if you are looking for a more fuel-efficient and emissions-compliant option, you might want to consider a fuel-injected engine.

Recommendation: If you are comfortable with the higher fuel consumption, maintenance, and emissions trade-offs, the Mercury 8M2003946 Mercury-Mercruiser V8 could be a suitable choice. However, it is always recommended to consult with a marine mechanic or a trusted dealer to ensure this engine aligns with your specific boating needs and usage.

Details:

Items may have imperfections, please see all photos and ask questions prior to purchase. We part out freshwater used boats and have hundreds of Volvo Pent Mercruiser parts. Please see photos for all details and item condition.

part #: 8m2003946 price

  • $199.00

specifications ouboaen:

  • for models: Mercruiser
  • for makes: Mercury
  • mpn: 8m2003946
  • part type: Carburetor

general ouboaen:

  • condition: Used
  • Boat Parts > Outboard Engines Components > Intake Fuel Systems

seller ouboaen:

  • # reviews: 1571
  • city: Alvin, Texas
  • rating: 98.9%

shipping ouboaen:

  • type: Fixed
  • service: UPS Ground
  • class: Standard
  • transit: 6-12 Days
  • cost: $60.00
  • carrier: UPS

returns ouboaen:

  • policy: No Returns

offer ouboaen:

  • started: January 18, 2026
  • best offers: True
  • sold: 0
  • availability: In Stock
  • quantity: 1
  • options: Ship-to-home

payments ouboaen:

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  • credit card: Diners-club
for models: mercruiser, for makes: mercury, part type: carburetor,
category: boat parts > outboard engines components > intake fuel systems, sku: 21392836795630891,
Mercury 8M2003946 Is Similar To:
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1 offer $199.00 USD
  • Used. Offer #1 priced at $199.00 + $20.00 shipping estimate = $219.00* total. Items may have imperfections, please see all photos and ask questions prior to purchase**** Here we re selling a used Mercury-Mercruiser V8 5.0L 5.7L 2-barrel Carburetor P/N: in good used condition.+$20.00 shipping

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