FORD C6AZ-9840-B Autolite Barrel Carburetor Choke Piston 289

( Type: Choke ), ( Manufacturer Part Number: C6AZ-9840-B ), ( Country Of Origin: United States )

Review FORD 289 Autolite Barrel Carburetor Choke Piston fits MUSTANG 390 1966–1970

Autolite 1106723B Choke Piston for 1966-1970 Ford Mustang 289/390 Cubic Inch 2-Barrel Carburetors (C6AF-9840-B, C6AY-9840-B, C6AZ-9840-B)

This Autolite 1106723B Choke Piston is specifically designed for use with the 1966-1970 Ford Mustang models equipped with 289 and 390 cubic inch 2-barrel carburetors (C6AF-9840-B, C6AY-9840-B, C6AZ-9840-B). The Autolite choke system is renowned for its reliability and efficiency in providing smooth cold starts.

The choke piston is a critical component of the Autolite choke assembly. It operates by mechanically restricting the airflow into the carburetor during the starting process, enriching the fuel mixture for easier ignition. This piston is manufactured from high-quality materials to ensure durability and consistent performance.

1. Designed for use with 1966-1970 Ford Mustang 289 and 390 cubic inch 2-barrel carburetors.

2. Enhances cold starting performance, ensuring a reliable start in various weather conditions.

3. Constructed from high-quality materials for durability and consistent performance.

4. Precision engineered to fit securely within the carburetor assembly.

5. Compatible with OEM Autolite choke systems and aftermarket alternatives.

1. Ensure the engine is cooled down and the carburetor assembly is free of any fuel or debris.

2. Remove the existing choke piston by unscrewing the mounting bolts and carefully extracting it from the housing.

3. Thoroughly clean the choke housing and surrounding areas to ensure a proper seal.

4. Install the new Autolite choke piston, ensuring it is properly seated within the housing.

5. Reinstall the mounting bolts and tighten them to the recommended torque specification.

6. Test the choke system to ensure proper functionality.

By replacing the old or worn-out choke piston with this Autolite 1106723B Choke Piston, you'll enjoy improved cold starting performance and extended component life for your 1966-1970 Ford Mustang.

The Autolite 289/390 carburetor choke piston for 1966-1970 Ford Mustang with part number C6AY-9840-B is a critical component of the vehicle's fuel delivery system. This piston is responsible for providing vacuum assistance to the carburetor during engine starting, ensuring smooth and reliable cold starts. Let's discuss some pros and cons of buying this part:

1. Original Equipment: This part is a factory original equipment (OEM) replacement, ensuring a perfect fit and function.

2. Smooth Cold Starts: Properly functioning choke piston helps in providing smooth cold starts, thereby enhancing the overall driving experience.

3. Improved Engine Performance: A worn-out or malfunctioning choke piston can lead to poor engine performance. Replacing it with a new OEM part can help restore the engine's performance to its original state.

4. Increased Longevity: Replacing the choke piston with a new OEM part can help increase the engine's longevity by preventing potential damage caused by a worn-out or faulty part.

1. Cost: OEM parts tend to be more expensive compared to aftermarket alternatives. However, the higher cost may be justified due to the reliability and durability of the OEM part.

2. Availability: Depending on the availability of the part in the market, there might be a delay in receiving the part, which could be an inconvenience for some customers.

In conclusion, the Autolite 289/390 carburetor choke piston for 1966-1970 Ford Mustang is a crucial component of the fuel delivery system that plays a significant role in ensuring smooth cold starts and improved engine performance. Although it may come with a higher cost compared to aftermarket alternatives, the reliability and durability of the OEM part make it a worthwhile investment for Mustang enthusiasts.

Therefore, my recommendation would be to consider purchasing the Autolite C6AY-9840-B carburetor choke piston as a replacement for your Mustang's faulty or worn-out part. This part will help restore the engine's performance to its original state and provide a reliable cold start experience.

part # c6az9840 prices

• $29.99-$34.99

specifications carbcaddie:

• for models: 390, Mustang
• for makes: Ford
• for years: 1966-1970
• type: Choke
• manufacturer part number: C6AZ-9840-B
• country of origin: United States

returns carbcaddie:

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

seller carbcaddie:

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• type: Fixed

offer carbcaddie:

• quantity: 1
• best offers: True
• started: January 28, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home

general carbcaddie:

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

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