OLDSMOBILE 7040257 Carburetor Quadrajet Barrel Gm 442

( Manufacturer Part Number: 7040257 ), ( Type: Carburetor ), ( Features: Quadrajet ), ( Choke Type: Mechanical ), ( Mounting Flange Type: Spread Bore ), ( Material: Alloy )

Review OLDSMOBILE 442 Original Carburetor Quadrajet Barrel Factory Hp Gm fits 1970

Introducing the Oldsmobile 7040257 Quadrajet Carburetor, specifically designed for 1970 Oldsmobile 4-4-2 models. This carburetor is a crucial component of the vehicle's fuel delivery system, supplying the engine with an optimal air-fuel mixture for efficient combustion and maximum horsepower.

The Oldsmobile 7040257 Quadrajet Carburetor is a four-barrel carburetor, meaning it utilizes four separate barrels to draw in air and fuel mixtures from the intake manifold. Each barrel is equipped with its own throttle valve, which allows for precise fuel metering and improved engine response.

The Quadrajet carburetor is identified by its distinctive design, featuring a large, round base with a distinctive bowl-shaped design. This design is unique to the Quadrajet, and it helps to improve airflow and fuel atomization, resulting in better combustion efficiency and increased power output.

Additionally, the Oldsmobile 7040257 Quadrajet Carburetor comes with a Quadrajet choke system. This system ensures that the engine receives a rich fuel mixture during starting, making cold starts easier and more reliable. The choke system is operated by a lever located on the carburetor, allowing the driver to easily engage or disengage it.

This Oldsmobile 4-4-2 carburetor is also equipped with GM's advanced Quadrajet technology. This includes a hydro-vac secondary system, which uses vacuum pressure to draw fuel from the secondary throttle bodies, ensuring a consistent fuel mixture during varying engine loads and RPMs. The carburetor also features an automatic choke, which engages when the engine is started and disengages once the engine reaches operating temperature.

The Oldsmobile 7040257 Quadrajet Carburetor is a high-performance component that is ideal for Oldsmobile 4-4-2 enthusiasts seeking to enhance the power and performance of their classic muscle car. Its unique design, advanced technology, and reliable operation make it a popular choice among Oldsmobile enthusiasts and collectors alike. Whether you're restoring a classic or simply looking to improve the performance of your daily driver, the Oldsmobile 7040257 Quadrajet Carburetor is an essential upgrade.

Oldsmobile 7040257 1970 442 Quadrajet Carburetor: A Detailed Analysis

The Oldsmobile 7040257 1970 442 Quadrajet Carburetor is a popular choice among classic car enthusiasts due to its iconic status in the automotive industry. This article aims to provide an objective analysis of the pros and cons of purchasing this carburetor for your Oldsmobile 1970 442.

1. Superior Performance: The Quadrajet carburetor offers excellent fuel atomization and air-fuel mixture distribution, resulting in improved engine performance.

2. Smooth Idle and Throttle Response: The Quadrajet carburetor is known for its smooth idle and responsive throttle, enhancing the overall driving experience.

3. Fuel Efficiency: Compared to other carburetors, the Quadrajet offers better fuel efficiency due to its advanced fuel metering capabilities.

4. Classic Appeal: The Quadrajet carburetor is a classic component of Oldsmobile muscle cars, contributing to the vehicle's historical value and desirability.

1. Complexity: The Quadrajet carburetor is more complex than other standard carburetors, requiring more maintenance and tuning to ensure optimal performance.

2. Cost: The Quadrajet carburetor is more expensive than other standard carburetors due to its advanced features and historical significance.

3. Availability: Finding a genuine Oldsmobile 7040257 Quadrajet carburetor in good condition can be challenging and time-consuming.

4. Compatibility: Ensure that the carburetor is compatible with your specific Oldsmobile 1970 442 model and engine configuration.

The Oldsmobile 7040257 1970 442 Quadrajet Carburetor offers superior performance, smooth idle and throttle response, and improved fuel efficiency. However, its complexity, cost, availability, and compatibility issues are significant drawbacks.

If you are a dedicated classic car enthusiast seeking optimal performance and the historical appeal of a Quadrajet carburetor, then this investment may be worthwhile. However, if you're looking for a straightforward and cost-effective solution, alternative carburetor options may be more suitable for your needs. Always ensure that you source the carburetor from a reputable supplier to guarantee its authenticity and condition.

Details:

Carb needs a rebuild and minor repair on 2 choke mount ears they could be epoxied in place to just set Stat housing. Very tough original carburetor to find. Please see pictures for more detail.

part #: 7040257 prices

• $42.95-$3500.00

specifications carbcoon:

• for makes: Oldsmobile
• for years: 1970
• mpn: 7040257
• type: Carburetor
• features: Quadrajet
• choke type: Mechanical
• mounting flange type: Spread Bore
• material: Alloy

returns carbcoon:

• policy: No Returns

offer carbcoon:

• options: Ship-to-home
• started: January 23, 2026
• best offers: True
• availability: In Stock
• quantity: 1
• sold: 0

shipping carbcoon:

• transit: 4-8 Days
• class: Standard
• cost: $30.00
• type: Fixed
• service: Standard

general carbcoon:

• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
• condition: Used

seller carbcoon:

• # reviews: 2987
• rating: 99.7%
• city: Akron, New York

payments carbcoon:

• cash
• credit card: Visa
• other
• wallet: Apple-pay

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