1. Used Automotive Fuel Pumps & Sending Units Offers
  2. sku: 11662160953546771
  3. AC FUEL PUMP RB516

AC FUEL PUMP RB516 Dual Action Vacuum

fits make: Pontiac, Oldsmobile. year: 1939–1940.

Rb516 Ac Fuel Pump Rebuilt Type 516 Dual Action Vacuum 1939 1940 Pontiac Oldsmobile

( Brand: Ac Fuel Pump ), ( Type: Fuel Pump ), ( Oe/oem Part Number: 3895 ), ( Manufacturer Part Number: RB516 )

Review AC FUEL PUMP Rebuilt Type 516 Dual Action Vacuum Pontiac Oldsmobile fits 1939–1940

Introducing the AC Fuel Pump RB516, a high-performing and reliable solution for your 1939-1940 Pontiac and Oldsmobile vehicles. This dual-action vacuum fuel pump is specifically designed to meet the unique requirements of these classic automobiles, ensuring optimal engine performance and fuel efficiency.

The RB516 fuel pump is a dual-diaphragm design, which allows it to provide a consistent fuel supply to the carburetor under both vacuum and atmospheric conditions. The diaphragms are made of durable and flexible rubber material that can withstand the rigors of regular use, providing long-lasting performance.

The pump housing is made of high-strength cast iron, offering superior durability and resistance to corrosion. The pump features a large fuel inlet and outlet, which allows for easy installation and efficient fuel flow. The pump also comes with a new fuel filter, ensuring that only clean fuel reaches the engine.

The RB516 fuel pump is a direct replacement for the original unit, making installation simple and straightforward. The pump includes all necessary hardware for installation, and the kit includes detailed instructions to guide you through the process. The pump is also compatible with aftermarket performance carburetors, making it a versatile choice for those looking to enhance their classic vehicle's performance.

In summary, the AC Fuel Pump RB516 is a high-quality, reliable, and efficient solution for your 1939-1940 Pontiac and Oldsmobile vehicles. Its dual-diaphragm design ensures consistent fuel delivery under all conditions, and its durable construction guarantees long-lasting performance. With easy installation and compatibility with aftermarket performance carburetors, the RB516 is an essential upgrade for any classic car enthusiast.

Pros and Cons of Buying an AC Fuel Pump (RB516) for 1939-1940 Pontiac and Oldsmobile

1. Background

The RB516 is a dual-action vacuum fuel pump, specifically designed for use in 1939-1940 Pontiac and Oldsmobile vehicles. This pump is an alternative to the original mechanical fuel pump, providing improved reliability and fuel delivery efficiency.

Pros of Buying an RB516 Fuel Pump

1. Enhanced Fuel Delivery: The RB516 fuel pump delivers fuel more efficiently, ensuring a consistent and stable fuel supply to the carburetor. This results in smoother engine operation and improved driving performance.

2. Reduced Engine Vibration: Since the RB516 is an electric fuel pump, it eliminates the need for the mechanical fuel pump, which can significantly reduce engine vibration, leading to a more comfortable driving experience.

3. Improved Fuel Economy: By providing a more consistent fuel supply, the RB516 fuel pump can help improve fuel economy, especially in older vehicles where fuel delivery efficiency can be a challenge.

4. Increased Longevity: The RB516 fuel pump is designed to be more durable and reliable compared to the original mechanical fuel pump. This can save you the time and cost of frequent repairs or replacements.

Cons of Buying an RB516 Fuel Pump

1. Cost: The RB516 fuel pump is generally more expensive than a standard mechanical fuel pump. This can be a significant investment, especially for those working on a tight budget.

2. Installation Complexity: Installing the RB516 fuel pump may require more time and effort compared to a standard mechanical fuel pump. Additionally, some modifications to the vehicle's wiring and fuel system may be necessary, which can add to the cost and complexity of the installation.

3. Potential Compatibility Issues: Although the RB516 is designed to fit 1939-1940 Pontiac and Oldsmobile models, there may be some compatibility issues with specific vehicles or engine configurations. It's essential to verify that the pump is compatible with your particular vehicle before making a purchase.

4. Limited Availability of Spare Parts: Since the RB516 is a relatively new and specialized fuel pump, spare parts may be less readily available compared to standard mechanical fuel pumps. This could make repairs more challenging and expensive in the future.

Conclusion

The RB516 dual-action vacuum fuel pump offers several advantages, including improved fuel delivery, reduced engine vibration, enhanced fuel economy, and increased longevity. However, it also comes with some drawbacks, including its higher cost, installation complexity, potential compatibility issues, and limited availability of spare parts.

Ultimately, the decision to buy an RB516 fuel pump depends on your specific needs, budget, and resources. If you prioritize improved engine performance, reduced engine vibration, and increased fuel efficiency, the RB516 may be an excellent investment. However, if you're working on a tight budget or prefer a more straightforward installation process, a standard mechanical fuel pump may be a better choice.

Recommendation

Before making a decision, carefully consider the pros and cons of the RB516 fuel pump and weigh them against your personal priorities and circumstances. If you decide that the benefits outweigh the drawbacks, it may be worth investing in an RB516 fuel pump for your 1939-1940 Pontiac or Oldsmobile. However, if you have concerns about the cost, complexity, or compatibility, it may be wise to explore alternative options or seek the advice of a professional mechanic.

Details:

Part number stamp 3895. Rebuilt AC Fuel Pump, type number 516. See pics for condition. Please verify part number and pictures match your application.

Will probably need a light cleaning/freshen before use.

part #: rb516 price

  • $40.00

specifications pumpunite:

  • for makes: Pontiac, Oldsmobile
  • for years: 1939-1940
  • brand: Ac Fuel Pump
  • type: Fuel Pump
  • oe/oem part number: 3895
  • manufacturer part number: RB516

shipping Pumpunite:

  • class: Standard
  • type: Calculated
  • transit: 4-7 Days
  • service: USPS Ground Advantage
  • cost: $0.00
  • carrier: USPS

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seller Pumpunite:

  • city: Sheboygan Falls, Wisconsin
  • # reviews: 32228
  • rating: 100.0%

returns Pumpunite:

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

offer Pumpunite:

  • options: Ship-to-home
  • best offers: True
  • availability: In Stock
  • sold: 0
  • started: December 4, 2025
  • quantity: 1

general Pumpunite:

  • condition: For parts or not working
  • Car Truck Parts Accessories > Air Fuel Delivery > Fuel Pumps Sending Units
for makes: pontiac, oldsmobile, for years: 1939-1940, type: fuel pump, oe/oem part number: 3895,
category: auto parts > car truck parts accessories > air fuel delivery > fuel pumps sending units, sku: 11662160953546771,

Ac Fuel Pump RB516 Is Similar To:

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1 offer $40.00 USD
  • Offer #1 priced at $40.00 + $0.00 delivery = $40.00* total. Will probably need a light cleaning/freshen before use. Rebuilt AC fuel pump, type number 516.FREE SHIPPING

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