ROCHESTER Carburetor 442 4BBL. 17084258. 5.0L

( Brand: Rochester ), ( Type: Carburetor ), ( Manufacturer Warranty: 1 Month ), ( Manufacturer Part Number: 17084258 ), ( Material: Steel ), ( Universal Fitment: No ), ( Vintage Part: Yes ), ( Country/region Of Manufacture: United States )

Review ROCHESTER 442 Carburetor 4bbl. 1980 85 Oldsmobile-buick. 5.0l fits 307 1980-85

The Rochester 17084258 442 Carburetor is a four-barrel fuel delivery system specifically designed for 1980-1985 Oldsmobile and Buick automobiles equipped with a 5.0L 307 cubic inch engine. This carburetor is a crucial component of the vehicle's fuel system, responsible for mixing fuel with air and supplying it to the engine for combustion.

The Rochester 17084258 442 Carburetor features four separate barrels, each with its own throttle valve and choke mechanism. The carburetor is designed to provide optimal fuel delivery under various driving conditions, ensuring smooth and efficient engine performance. The barrels are mounted atop a base plate, which also houses the float bowls, fuel metering jets, and other essential components.

The carburetor's design includes a primary and secondary metering system, which allows for fine-tuning of the fuel mixture to optimize engine performance. The primary metering rods control the fuel flow during idle and light-load conditions, while the secondary metering rods regulate the fuel mixture during full-throttle operation.

The Rochester 17084258 442 Carburetor is also equipped with a vacuum secondary system, which uses engine vacuum to enrich the fuel mixture during heavy acceleration. This system helps ensure that the engine receives the proper fuel-air mixture for maximum power and performance.

The carburetor's base plate is constructed from durable cast aluminum, while the throttle shafts and linkages are made from high-strength steel. These materials ensure the carburetor's longevity and ability to withstand the rigors of daily driving.

The Rochester 17084258 442 Carburetor is a direct replacement for the original equipment carburetor on 1980-1985 Oldsmobile and Buick 5.0L 307 engines. Installation is straightforward, requiring only the removal of the old carburetor and the installation of the new one. Properly installed and tuned, this carburetor can deliver improved engine performance, increased fuel efficiency, and a smoother, more responsive driving experience.

In summary, the Rochester 17084258 442 Carburetor is a high-quality, durable fuel delivery system designed specifically for 1980-1985 Oldsmobile and Buick 5.0L 307 engines. Its design includes four barrels, a primary and secondary metering system, and a vacuum secondary system, ensuring optimal fuel delivery under various driving conditions. The carburetor's construction from durable materials ensures its longevity, making it a reliable and effective choice for those seeking to enhance their vehicle's performance.

The Rochester Quadrajet 442 carburetor, model number 17084258, was used in Oldsmobile and Buick vehicles with the 5.0L 307 cubic inch engine from 1980 to 1985. Here are some pros and cons that might help you make a decision about purchasing this carburetor.

1. Authenticity: This carburetor is an original part for Oldsmobile and Buick vehicles, ensuring a proper fit and function.

2. Availability: Being a common carburetor model for its era, it is relatively easy to find rebuild kits, replacement parts, and repair services.

3. Performance: With four barrels, this carburetor provides better fuel distribution for improved engine performance and throttle response.

4. Cost-effective: Compared to modern fuel injection systems, the cost of purchasing and maintaining a carburetor is generally lower.

1. Complexity: Carburetors have numerous adjustments and components that can be challenging to diagnose and repair without proper knowledge and tools.

2. Emissions: Carburetors are not as efficient as modern fuel injection systems, which can lead to increased emissions and decreased fuel economy.

3. Maintenance: Regular maintenance, such as adjusting the idle mixture, is essential to ensure proper engine performance and longevity.

4. Fuel economy: Carburetors tend to have lower fuel economy compared to fuel injection systems due to the inefficient fuel delivery process.

The Rochester Quadrajet 442 carburetor, model number 17084258, can be a suitable option for those who own a 1980-1985 Oldsmobile or Buick with a 5.0L 307 engine and prefer the authenticity and performance of a carburetor. However, it requires regular maintenance, may lead to increased emissions, and has lower fuel economy compared to modern fuel injection systems.

Considering the pros and cons, if you are comfortable with the necessary maintenance and understand the trade-offs, a used or rebuilt Rochester Quadrajet 442 carburetor can be a cost-effective and performance-enhancing choice for your Oldsmobile or Buick. However, if you prioritize ease of use, lower emissions, and improved fuel economy, you may want to consider upgrading to a modern fuel injection system.

part # 17084258 prices

• $220.99-$269.00

specifications carbcaddie:

• for models: 307
• for makes: Oldsmobile, Buick, Rochester
• for years: 1980-85
• brand: Rochester
• type: Carburetor
• manufacturer warranty: 1 Month
• manufacturer part number: 17084258
• material: Steel
• universal fitment: No
• vintage part: Yes
• country/region of manufacture: United States

offer carbcaddie:

• best offers: True
• options: Ship-to-home
• started: August 30, 2025
• quantity: 1
• availability: In Stock
• sold: 0

seller carbcaddie:

• # reviews: 1138
• rating: 96.8%

shipping carbcaddie:

• class: Expedited
• service: USPS Priority Mail
• type: Fixed
• transit: 10-16 Days
• carrier: USPS
• cost: $38.00

returns carbcaddie:

• policy: No Returns

general carbcaddie:

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

payments carbcaddie:

• credit card: Diners-club
• other
• wallet: Google-pay

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