ROCHESTER 7040083 Carburetor Boat 2-BARREL 2GC 2.5L 3.0L

( Brand: Rochester ), ( Manufacturer Part Number: 7040083 ), ( Type: Carburetor )

Review ROCHESTER 2-barrel Carburetor 2gc Omc 2.5l 3.0l Boat fits MERCRUISER MARINE

The Rochester 7040083 2-barrel carburetor is specifically designed for marine applications with MerCruiser, OMC 2.5L and 3.0L engines. This carburetor is an essential component of the engine's fuel delivery system, supplying the correct amount of fuel to ensure optimal performance and efficient combustion.

This carburetor features a 2-barrel design that allows for a greater fuel flow rate compared to a single-barrel carburetor. Each barrel is equipped with a float-operated fuel level sensor that maintains a consistent fuel level, ensuring a steady fuel supply to the engine. The barrels are also equipped with a secondary idle circuit, which provides additional fuel for smooth idling and warming up of the engine.

The carburetor's air intake system is designed to draw in a sufficient amount of cool, dense air for efficient combustion. The air intake is equipped with a venturi shape, which creates a vacuum that draws fuel into the carburetor for efficient mixing with the air. The carburetor's fuel pump is capable of delivering fuel at a high enough pressure to meet the engine's demands for power and performance.

The Rochester 7040083 carburetor is built to withstand the harsh marine environment. Its housing is constructed from cast aluminum, which provides excellent heat dissipation and resistance to corrosion. The carburetor's fuel and air passages are designed to be self-draining, preventing the accumulation of water and ensuring that the engine continues to run smoothly even in wet conditions.

The carburetor's adjustment screws are easily accessible, allowing for fine-tuning of the engine's performance. The primary and secondary idle adjustments, as well as the fuel mixture adjustments, can be adjusted to optimize the engine's idle speed and fuel mixture for peak performance and fuel efficiency.

The Rochester 7040083 2-barrel carburetor is a reliable and high-performing component for MerCruiser, OMC 2.5L and 3.0L marine engines. Its 2-barrel design, self-draining features, and easily accessible adjustments make it an excellent choice for boat owners who demand the best from their engines.

The Rochester 7040083 2-barrel carburetor is a popular choice for marine applications of Mercruiser Omnicraft 2.5L and 3.0L engines. Here are some pros and cons to help you make an informed decision before purchasing:

1. Wide Application: This carburetor is suitable for a broad range of Mercruiser engines, making it a versatile option for boat owners.

2. Easy Installation: The carburetor comes with an easy-to-follow installation guide, making it a relatively straightforward process for DIY enthusiasts.

3. Good Performance: Many boat owners report excellent performance after installing this carburetor, with improved throttle response and fuel efficiency.

4. Affordable: Compared to other marine carburetors, this Rochester model is relatively affordable, making it an attractive option for budget-conscious buyers.

1. Potential for Leaks: Some users have reported issues with carburetor leaks, which can be a hassle to diagnose and repair.

2. Adjustments Required: Depending on the specific engine and boat application, some users may need to make adjustments to the carburetor to optimize performance.

3. Limited Availability of Spare Parts: While the carburetor itself is widely available, spare parts may be harder to find, potentially leading to longer downtimes during repairs.

The Rochester 7040083 2-barrel carburetor is an affordable and versatile option for marine applications of Mercruiser Omnicraft 2.5L and 3.0L engines. However, potential buyers should be aware of the possibility of leaks and the potential need for adjustments to optimize performance. If you are comfortable with DIY repairs and have access to spare parts, this carburetor could be an excellent choice for your boat.

If you are in the market for a marine carburetor for your Mercruiser engine and are looking for affordability and versatility, the Rochester 7040083 2-barrel carburetor is a solid option. However, be prepared for the possibility of leaks and adjustments, and ensure that you have access to spare parts before making a purchase. Additionally, consider consulting with a marine mechanic or professional before installing the carburetor to ensure proper installation and optimized performance.

Details:

Please verify part number and pics match your application. Carb core appears to be mostly complete. Rochester 2GC 2-barrel carburetor, stamp number 7040083. Core for rebuilding or parts.

Throttle bores measure 1-7/16 and base mounting bolt pattern to measures 1-7/8 by 3-1/4. See pics for condition. Linkage moves free.

part #: 7040083 prices

• $32.95-$439.00

specifications carbcoon:

• for models: Marine, Mercruiser
• for makes: Omc, Rochester
• brand: Rochester
• mpn: 7040083
• type: Carburetor

payments carbcoon:

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

offer carbcoon:

• started: December 29, 2025
• options: Ship-to-home
• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1

returns carbcoon:

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

shipping carbcoon:

• class: Standard
• service: USPS Ground Advantage
• carrier: USPS
• type: Calculated
• cost: $0.00
• transit: 4-8 Days

seller carbcoon:

• # reviews: 32556
• city: Sheboygan Falls, Wisconsin
• rating: 100.0%

general carbcoon:

• condition: For parts or not working
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

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