CARTER 4903S Yf Carburetor Carb 1-BARREL 170 6-CYLINDER

( Brand: Carter ), ( Manufacturer Part Number: 4903S ), ( Type: Carburetor )

Review CARTER Yf 1-barrel Carburetor Carb Ford Truck 170 6-cylinder fits 1970

Introducing the Carter YF 1-barrel Carburetor, model number 4903S, specifically designed for the 1970 Ford 170 6-cylinder engine. This carburetor is a crucial component of your vehicle's fuel delivery system, ensuring optimal engine performance.

The Carter 4903S YF carburetor is a single-barrel design, which means it features a single intake manifold port and a single throttle valve. This configuration is ideal for smaller engines like the Ford 170 6-cylinder, providing efficient fuel delivery and excellent idle quality.

The carburetor comes equipped with a vacuum secondary system, which enhances low-end torque and improves overall engine performance. The secondary circuit draws fuel from the main jet when the engine vacuum is sufficient, providing an additional fuel mixture for better power output.

This Carter carburetor boasts a precise metering design, ensuring accurate fuel delivery at all engine speeds. The metering rods and jets are carefully calibrated to maintain a consistent fuel-air mixture for optimal combustion.

The carburetor body is made of durable cast aluminum, ensuring long-lasting performance. The barrel and base gaskets are made of high-quality rubber material, ensuring a tight seal and effective fuel sealing.

The Carter 4903S YF carburetor is also equipped with a power valve, which improves engine response and idle stability. The power valve opens at low engine speeds to provide more fuel, improving idle quality and reducing engine stalling.

The carburetor features easy-to-adjust choke and idle mixture screws, allowing for simple tuning to optimize engine performance based on specific driving conditions. The choke system ensures a quick and efficient engine start in cold weather, while the idle mixture screws can be adjusted to fine-tune the engine idle speed.

In summary, the Carter 4903S YF 1-barrel Carburetor is a high-performance, durable, and efficient fuel delivery system designed for the 1970 Ford 170 6-cylinder engine. Its precise metering design, vacuum secondary system, and easy-to-adjust features make it an excellent choice for classic car enthusiasts and restoration projects.

The Carter YF 1-barrel carburetor model 4903S is a common choice for restoring or replacing the original carburetor on a 1970 Ford 170 6-cylinder engine. Here are some pros and cons to consider before making a purchase.

1. Authenticity: Using an original-equipment carburetor can help maintain the authenticity of your vehicle, which is important for collectors and enthusiasts.

2. Reliability: Carter carburetors have a reputation for durability and reliability. These carburetors were commonly used in Ford vehicles during the 1960s and 1970s.

3. Availability: Carter carburetors are readily available from various suppliers, both online and offline. This makes it easy to find a replacement or restore your existing carburetor.

4. Adjustability: A 1-barrel carburetor like the Carter 4903S offers good adjustability, allowing you to fine-tune the engine's performance.

1. Complexity: Carburetors can be complex systems to understand and maintain. Adjusting the mixture and synchronizing the idle circuit can be challenging for some.

2. Fuel efficiency: Older carburetors like the Carter 4903S may not offer the same level of fuel efficiency as modern fuel injection systems.

3. Cost: While Carter carburetors are relatively affordable compared to other brands, the cost of purchasing, rebuilding, and tuning a carburetor can add up.

4. Emissions: Older carburetors do not meet modern emissions standards. Installing this carburetor on a vehicle that is required to pass emissions testing may not be an option.

The Carter YF 1-barrel carburetor model 4903S can be a good choice for those restoring or working on a 1970 Ford 170 6-cylinder engine. Its availability, reliability, and adjustability make it a popular option among enthusiasts. However, its complexity, potential fuel inefficiency, and inability to meet modern emissions standards are important considerations. Ultimately, the decision to purchase this carburetor depends on your specific needs, budget, and goals for your project.

If you are looking to restore or replace the original carburetor on a 1970 Ford 170 6-cylinder engine, the Carter YF 1-barrel carburetor model 4903S is a solid choice. Be prepared for some complexity in tuning and adjusting the carburetor, and consider your budget and emissions requirements before making a purchase. Additionally, you may want to explore the option of having the carburetor rebuilt by a professional to ensure optimal performance.

Details:

Mounting bolt holes have been slotted open. Carter YF 1-barrel carburetor, stamp number 4903S. Core for rebuilding or parts. See pics for condition.

Carb core appears to be mostly complete. Has manual choke cover. Linkage moves free. Please verify part number and pictures match your application.

part #: 4903s prices

• $40.00-$199.99

specifications carbcoon:

• for makes: Ford
• for years: 1970
• brand: Carter
• mpn: 4903s
• type: Carburetor

payments carbcoon:

• other
• credit card: Discover
• wallet: Apple-pay

offer carbcoon:

• started: August 7, 2025
• best offers: True
• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock

seller carbcoon:

• rating: 100.0%
• city: Sheboygan Falls, Wisconsin
• # reviews: 30667

general carbcoon:

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

returns carbcoon:

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

shipping carbcoon:

• type: Calculated
• transit: 4-8 Days
• cost: $0.00
• service: USPS Ground Advantage
• carrier: USPS
• class: Standard

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