ROCHESTER 7040159 Divorce Choke 2BBL. W. 326 400

( Brand: Rochester ), ( Type: Carburetor ), ( Manufacturer Warranty: 1 Month ), ( Fitment Type: Direct Replacement ), ( Manufacturer Part Number: 7040159 ), ( Mounting Hardware Included: No ), ( Material: Steel ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review ROCHESTER 2bbl. Pontiac W. Divorce Choke 326 Inch fits 400

The Rochester 7040159 2bbl Pontiac Divorce Choke is a crucial component for the carburetion system of certain Pontiac engines, specifically those equipped with a 326 cubic inch or 400 cubic inch V8 engine. This choke mechanism is designed to ensure a smooth and efficient start-up process in cold weather conditions.

The Divorce Choke system is named for its unique design, which allows the choke plate to disengage from the main throttle butterfly as soon as the engine reaches operating temperature. This feature eliminates the need for constant choke operation once the engine has warmed up, preventing the issue of "divorced" or disconnected idle circuits that can lead to rough running or stalling.

This particular Rochester 7040159 choke assembly is specifically designed for 2-barrel carburetors used in Pontiac vehicles. It comes complete with the choke plate, linkage, and necessary hardware for installation. The choke plate features a heavy-duty construction with a robust, heat-resistant material to ensure long-lasting performance. The linkage is designed for easy adjustment, allowing you to fine-tune the choke operation for optimal engine performance.

Installing the Rochester 7040159 Divorce Choke assembly is a straightforward process. It can be done by following the instructions provided in your vehicle's service manual. The choke plate is designed to fit securely in the carburetor and connect to the throttle linkage using the included hardware. Proper installation ensures the choke functions correctly, providing a reliable and efficient start-up experience even in cold weather.

In summary, the Rochester 7040159 2bbl Pontiac Divorce Choke is an essential part for maintaining the optimal performance of certain Pontiac engines. Its unique design allows for smooth start-up in cold conditions while preventing disconnected idle circuits, ensuring consistent and reliable engine operation. The component comes complete with the choke plate, linkage, and necessary hardware for installation, making it a convenient and cost-effective solution for those seeking to improve their vehicle's cold-weather performance.

Pros and Cons of Buying a Rochester 7040159 2bbl Pontiac Quadra-Jet Carburetor for a 1964-1966 Pontiac GTO or LeMans 400

The Rochester 7040159 2bbl Quadra-Jet carburetor was originally used on various Pontiac engines during the 1960s, including the 326 ci and 400 ci V8s found in the Pontiac GTO and LeMans 400. If you're considering purchasing this carburetor for your classic Pontiac restoration project, it's important to weigh the pros and cons.

1. Authentic: This carburetor is an original part for your classic Pontiac, which can enhance its value and authenticity.

2. Performance: The Quadra-Jet design offers excellent fuel distribution and atomization, which can lead to improved engine performance and drivability.

3. Availability: These carburetors are still available on the aftermarket, making them relatively easy to find and purchase.

4. Community support: There is a large community of enthusiasts and restoration experts who can offer advice and guidance on installation and tuning.

1. Complexity: The Quadra-Jet design is more complex than modern carburetors, which can make installation and tuning more challenging.

2. Cost: Original Quadra-Jet carburetors can be expensive, especially if they are in good condition and hard to find.

3. Maintenance: These carburetors require regular maintenance, including adjustments and rebuilds, to ensure proper performance.

4. Compatibility: Ensure the carburetor is compatible with your engine and transmission, as some variations may require modifications or adapters.

The Rochester 7040159 2bbl Quadra-Jet carburetor offers several advantages for those restoring a classic Pontiac GTO or LeMans 400. Its authenticity, performance, and availability make it an attractive choice. However, its complexity, cost, and maintenance requirements should be carefully considered before making a purchase.

If you're committed to using an original Quadra-Jet carburetor and have the necessary skills, resources, and time to install, tune, and maintain it, then this could be an excellent choice for your Pontiac restoration project. Alternatively, consider exploring modern carburetor options or fuel injection systems that may offer improved performance, ease of use, and lower maintenance requirements. Ultimately, make an informed decision based on your budget, experience level, and priorities.

part # 7040159 prices

• $56.23-$295.00

specifications carbcaddie:

• for models: 400
• for makes: Pontiac, Rochester
• brand: Rochester
• type: Carburetor
• manufacturer warranty: 1 Month
• fitment type: Direct Replacement
• manufacturer part number: 7040159
• mounting hardware included: No
• material: Steel
• vintage part: Yes
• country of origin: United States

returns carbcaddie:

• paid by: Buyer
• policy: Returns Accepted
• time: 14 Days

seller carbcaddie:

• # reviews: 3093
• rating: 99.2%

offer carbcaddie:

• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1
• started: April 19, 2026

general carbcaddie:

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

shipping carbcaddie:

• class: Expedited
• type: Calculated
• transit: 4-8 Days
• cost: $25.70
• service: USPS Priority Mail Large Flat Rate Box
• carrier: USPS

payments carbcaddie:

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

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