864940

The Mercruiser 864940 Barrel Carburetor is a high-performance marine carburetor specifically designed for the Mercruiser 3.0L 86490 engine with serial numbers 213307 and above. This carburetor is an essential component of your marine engine, delivering the optimal fuel mixture for efficient combustion and superior engine performance.

The 864490 carburetor features a multi-barrel design, which provides an improved air/fuel mixture for smoother engine operation and better throttle response. Each barrel is equipped with an individual float bowl, allowing for precise fuel metering and delivery to the engine.

This marine carburetor is constructed from high-quality materials to ensure durability and reliability in the harsh marine environment. The barrels are made of cast aluminum, while the base is made of cast iron for added strength and stability. The carburetor also includes a baffled fuel bowl to reduce fuel slosh and improve fuel distribution.

The 864940 carburetor is equipped with a number of features to optimize engine performance and ease of use. It includes a vacuum secondary system for improved low-end torque and throttle response, as well as an adjustable idle mixture control to fine-tune engine idle speed and quality. The carburetor also includes a built-in water separator to prevent water from entering the fuel system and causing damage.

To ensure a proper installation and optimal performance, the Mercruiser 864940 Barrel Carburetor includes a number of mounting and connection points. It includes a flange mounting system, as well as hose connections for the fuel inlet, throttle position sensor (TPS), and vacuum secondary system. The carburetor also includes a gasket kit for a secure and leak-free installation.

Overall, the Mercruiser 864940 Barrel Carburetor is a high-quality, performance-enhancing component for your Mercruiser 3.0L 86490 engine. Its multi-barrel design, durable construction, and advanced features make it an ideal choice for boaters seeking optimal engine performance and ease of use.

Mercruiser 864940 Barrel MerCarb Marine Carburetor: A Detailed Analysis

The Mercruiser 864940 Barrel MerCarb Marine Carburetor is a popular choice among boat owners due to its durability and performance. In this analysis, we will examine the key features, advantages, and disadvantages of this carburetor to help you make an informed decision.

1. Designed for Mercruiser 3.0L 86490 21 3307 engines

2. Barrel carburetor design for improved fuel efficiency and power

3. MerCarb technology for easy tuning and maintenance

1. Improved Fuel Efficiency: The Mercruiser 864940 Barrel MerCarb Marine Carburetor is designed to optimize fuel delivery, which can lead to improved fuel efficiency and reduced operating costs.

2. Easy Tuning: MerCarb technology allows for easy tuning, making it easier for boat owners to adjust the carburetor for optimal performance.

3. Durable Construction: The carburetor is constructed from high-quality materials, ensuring that it can withstand the rigors of marine use.

4. Power Delivery: The barrel design of the carburetor allows for improved power delivery, making it an excellent choice for boaters who require more power from their engines.

1. Complexity: The Mercruiser 864940 Barrel MerCarb Marine Carburetor is a more complex design than some other carburetors, which can make it more difficult to install and maintain for those without experience.

2. Cost: The carburetor is more expensive than some other options on the market, which may be a deterrent for some boat owners.

3. Requires Regular Maintenance: Like any carburetor, the Mercruiser 864940 Barrel MerCarb Marine Carburetor requires regular maintenance to ensure optimal performance.

The Mercruiser 864940 Barrel MerCarb Marine Carburetor is an excellent choice for boat owners who require high performance and durability from their marine engine. Its improved fuel efficiency, easy tuning, and powerful delivery make it a popular choice among boaters. However, its complexity and higher cost may be a deterrent for some. Ultimately, the decision to purchase this carburetor depends on your specific needs and budget.

If you require high performance and durability from your marine engine and have the budget for it, the Mercruiser 864940 Barrel MerCarb Marine Carburetor is an excellent choice. However, if you are on a tight budget or are not comfortable with the complexity of this carburetor, you may want to consider other options. Regardless of your decision, it is always recommended to consult with a professional marine mechanic to ensure proper installation and maintenance.

Details:

Buyer pays $20 shipping. Carb is in good shape but has sat a couple years storage. Offering the carb and flame arrest from a 1999 stingray boat with 3.0l inboard Mercruiser. Boat was very low hour but had a cracked block from freezing.

specifications inboardfuel:

• for models: Marine
• for years: 2021
• brand: Mercruiser
• mpn: 864940
• part type: Mercarb Carburetor

offer inboardfuel:

• options: ship-to-home
• in stock #: 5
• started: april 12, 2026
• prices: $48.92–$379.98
• item condition:
  • New
  • Used
  • New other (see details)
  • New with tags
• sold #: 6
• availability: in stock
• best offers: true

general inboardfuel:

• category: Boat Parts > Inboard Engines Components > Intake Fuel Systems

payments inboardfuel:

• cash
• wallet: google-pay
• credit card: mastercard
• other

returns inboardfuel:

• policy: no returns

seller inboardfuel:

• city: fort dodge, iowa
• rating: 99.5%
• # reviews: 1321

shipping inboardfuel:

• type: fixed
• transit: 3-6 days
• service: fedex ground / fedex home delivery
• carrier: fedex
• class: standard

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