MOTORCRAFT D3AF-RA Carburetor 2100 1.21 2-BARREL V-8

( Brand: Motorcraft ), ( Manufacturer Part Number: D3AF-RA ), ( Type: Carb ), ( Oe/oem Part Number: 1974 )

Review MOTORCRAFT 1.21 2-barrel Carburetor Ford Mercury V-8 fits 351 400 1973

The Motorcraft D3AF-RA 2100 1.21 2-barrel carburetor is a classic automotive component designed specifically for the 1973 Ford Mercury 351 400 V-8 engine. This carburetor is a testament to Motorcraft's commitment to delivering high-quality, reliable fuel delivery systems.

The D3AF-RA 2100 is a 2-barrel carburetor, meaning it has two separate barrels for each intake manifold port. Each barrel is equipped with a 410 CFM (cubic feet per minute) venturi, making it an ideal choice for larger V-8 engines like the 351 400. The carburetor's bore size measures 2.00 inches, and the base circle diameter is 3.25 inches.

This carburetor features a 1.21:1 secondary ratio, which ensures efficient fuel delivery to the engine at both idle and wide-open throttle conditions. The primary circuit has a 28.5:1 ratio, which provides smooth idle quality and excellent fuel economy. The secondary circuit also benefits from Motorcraft's innovative design, with a single-plane intake manifold and automatic choke mechanism.

* Accelerator pump with a capacity of 1.5 quarts per minute, which delivers additional fuel to the engine during rapid acceleration.

* Emulsion tube design that helps maintain consistent fuel-air mixture for optimal combustion.

* Adjustable idle mixture screws, allowing for fine-tuning of idle quality and stability.

* Accurate fuel level sensor, which ensures proper fuel delivery and helps maintain optimal engine performance.

* Ragged edge float design, which provides consistent fuel delivery at varying engine speeds and fuel levels.

The Motorcraft D3AF-RA 2100 1.21 2-barrel carburetor is a high-performance component designed to deliver reliable fuel delivery to the 1973 Ford Mercury 351 400 V-8 engine. Its innovative design, combined with its robust construction, makes it a preferred choice among classic car enthusiasts and restorers. When installed and properly tuned, this carburetor can help your Ford Mercury 351 400 V-8 engine run stronger and more efficiently than ever before.

The Motorcraft D3AF-RA 2100 1.21 2-barrel carburetor is a common choice for restoring or maintaining a 1973 Ford Mercury 351 400 V-8 engine. Here are some pros and cons to consider before making a purchase:

1. Authenticity: Motorcraft is a Ford division, and this carburetor is specifically designed for Ford vehicles, ensuring a proper fit and reliable performance.

2. Availability: Motorcraft carburetors are widely available through various automotive parts suppliers, making them easy to obtain.

3. Fuel Efficiency: This carburetor is known for providing good fuel efficiency, which can save money on gas in the long run.

4. Power: The 2-barrel design delivers good power and torque, making it suitable for those looking for improved engine performance.

1. Complexity: Carburetors can be complex to tune, especially for those who are not experienced with engine performance modifications.

2. Cost: While not the most expensive option, the Motorcraft D3AF-RA 2100 1.21 2-barrel carburetor can still be a significant investment, especially for those on a tight budget.

3. Maintenance: Carburetors require regular maintenance, including adjustments and cleaning, which can add to the overall cost of ownership.

The Motorcraft D3AF-RA 2100 1.21 2-barrel carburetor offers several benefits for those looking to restore or maintain a 1973 Ford Mercury 351 400 V-8 engine. Its authenticity, availability, fuel efficiency, and power make it a popular choice among enthusiasts. However, the complexity, cost, and maintenance requirements are important considerations to keep in mind. Ultimately, whether or not this carburetor is the right choice depends on your specific needs, budget, and level of experience with engine performance modifications.

If you are comfortable with the complexities and costs associated with a carburetor and are looking for improved engine performance for your 1973 Ford Mercury 351 400 V-8, the Motorcraft D3AF-RA 2100 1.21 2-barrel carburetor is a solid choice. However, if you are on a tight budget or prefer a simpler solution, you may want to consider other options, such as a fuel injection system or a more basic carburetor.

Details:

Please verify part number and pictures match your application. Carb core appears to be mostly complete. Linkage moves free. See pics for condition.

Core for rebuilding or parts. Motorcraft 2100 2-barrel carburetor, no ID tag but lower ear is stamped 3A RA. Fuel bowl is casting number 1.21.

part #: d3af prices

• $65.99-$329.99

specifications carbcoon:

• for models: 351, 400
• for makes: Ford, Mercury
• for years: 1973
• brand: Motorcraft
• mpn: D3af-ra
• type: Carb
• oe/oem part number: 1974

returns carbcoon:

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

offer carbcoon:

• sold: 0
• quantity: 1
• best offers: True
• availability: In Stock
• options: Ship-to-home
• started: April 28, 2025

seller carbcoon:

• rating: 100.0%
• # reviews: 30017
• city: Sheboygan Falls, Wisconsin

payments carbcoon:

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

general carbcoon:

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

shipping carbcoon:

• transit: 3-8 Days
• type: Calculated
• service: USPS Ground Advantage
• cost: $0.00
• carrier: USPS
• class: Standard

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