MOPAR 3747139 Nos Fuel Pacer Vacuum Switch

( Brand: Mopar ), ( Part Type: Fuel Vacuum Switch ), ( Manufacturer Part Number: 3747139 )

Review MOPAR Nos #3747139 Fuel Pacer Vacuum Switch Chrysler Dodge Plymouth fits 1976

Mopar 3747139 Fuel Pacer Vacuum Switch for 1976 Chrysler, Dodge, Plymouth

The Mopar 3747139 Fuel Pacer Vacuum Switch is an essential component for maintaining the fuel system of 1976 Chrysler, Dodge, and Plymouth vehicles. This switch is designed to control the fuel pump based on engine vacuum, ensuring efficient fuel delivery and improved engine performance.

Constructed from high-quality materials, this vacuum switch is built to withstand the rigors of daily driving. Its robust design incorporates a durable switch mechanism that can handle the varying engine vacuum levels encountered in different driving conditions. The switch housing is engineered to be resistant to environmental elements, ensuring long-lasting reliability.

The Mopar 3747139 Fuel Pacer Vacuum Switch features a simple yet effective design. The switch has two terminals: one for the fuel pump and the other for the vacuum source. When the engine is running and producing sufficient vacuum, the switch closes, allowing electricity to flow to the fuel pump and keep it operational. Conversely, when the engine vacuum drops, such as during idle or deceleration, the switch opens, disconnecting the electrical power to the fuel pump, saving fuel and reducing unnecessary wear.

Installing the Mopar 3747139 Fuel Pacer Vacuum Switch is a straightforward process. It can be easily accessed near the fuel tank or under the dashboard, depending on the specific vehicle model. Simply remove the old switch, make the necessary electrical connections to the new switch, and secure it in place using the provided hardware.

By replacing the worn-out or faulty fuel pacer vacuum switch with the Mopar 3747139, 1976 Chrysler, Dodge, and Plymouth vehicle owners can ensure their fuel systems operate at peak performance. This switch not only enhances fuel efficiency but also helps prevent potential fuel pump-related issues, prolonging the life of the fuel pump and contributing to a smoother, more enjoyable driving experience.

Pros and Cons of Buying Mopar 3747139 Fuel Pacer Vacuum Switch for 1976 Chrysler, Dodge, Plymouth

The Mopar 3747139 Fuel Pacer Vacuum Switch is a crucial component in the fuel system of certain 1976 Chrysler, Dodge, and Plymouth vehicles. This part ensures proper engine operation by regulating the fuel pump based on engine vacuum. Let's discuss the pros and cons of purchasing this part to help you make an informed decision.

1. OEM Part: The Mopar 3747139 is an original equipment manufacturer (OEM) part, which means it's designed and manufactured by Chrysler. This guarantees a perfect fit and optimal performance for your vehicle.

2. Enhanced Fuel Economy: A faulty fuel pacer vacuum switch can cause excessive fuel consumption. Replacing this part will help restore proper fuel economy, saving you money on gas in the long run.

3. Improved Engine Performance: With the fuel pacer vacuum switch functioning correctly, your engine will run more smoothly and efficiently. This can lead to better acceleration and overall performance.

4. Reliability: OEM parts are known for their reliability and durability. By choosing the Mopar 3747139, you can enjoy peace of mind knowing that you've invested in a high-quality part.

5. Availability: As a popular and widely used part, the Mopar 3747139 is readily available at most auto parts stores and online retailers.

1. Cost: OEM parts can be more expensive than aftermarket alternatives. The Mopar 3747139 may be pricier than some third-party options, but the benefits of using an OEM part can outweigh the cost.

2. Installation Complexity: Depending on your mechanical skills and experience, installing the Mopar 3747139 may require professional assistance. You may need to remove the fuel tank or other components to access the vacuum switch, which can be a complex process.

3. Time-Consuming: The installation process can take several hours, especially if you're not experienced in automotive repairs. This can be a significant inconvenience for those who prefer a quick fix.

4. Potential for Additional Repairs: Older vehicles, especially those with high mileage, may require additional repairs along with the fuel pacer vacuum switch replacement. This can add to the overall cost and time investment.

The Mopar 3747139 Fuel Pacer Vacuum Switch offers several advantages, such as OEM quality, improved fuel economy, and enhanced engine performance. However, it also comes with some disadvantages, like cost, installation complexity, and potential for additional repairs. Ultimately, the decision to buy this part depends on your priorities, budget, and mechanical abilities. If you value the benefits of an OEM part and are willing to invest in a high-quality, reliable solution, then the Mopar 3747139 is an excellent choice. On the other hand, if you're looking for a more cost-effective option or prefer an easier installation process, you may want to consider aftermarket alternatives.

If you're confident in your mechanical abilities and have the necessary tools and time to install the Mopar 3747139, purchasing this part is an excellent investment for your 1976 Chrysler, Dodge, or Plymouth vehicle. The benefits of using an OEM part can outweigh the cost and installation complexity, ensuring optimal engine performance and improved fuel economy. However, if you're not comfortable with the installation process or prefer a more budget-friendly option, consider researching aftermarket alternatives to find a suitable replacement. Always make sure to consult your vehicle's service manual or consult with a professional mechanic for installation instructions and any necessary precautions.

part # 3747139 prices

• $42.78-$99.95

specifications carbcaddie:

• for makes: Chrysler, Dodge, Plymouth, Mopar
• for years: 1976
• brand: Mopar
• part type: Fuel Vacuum Switch
• manufacturer part number: 3747139

shipping carbcaddie:

• class: Economy
• type: Fixed
• carrier: FedEx
• service: FedEx Ground Economy
• cost: $10.90
• transit: 4-11 Days

returns carbcaddie:

• policy: No Returns

general carbcaddie:

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

offer carbcaddie:

• sold: 0
• availability: In Stock
• started: June 14, 2025
• best offers: True
• quantity: 1
• options: Ship-to-home

seller carbcaddie:

• rating: 99.4%
• # reviews: 6386

payments carbcaddie:

• credit card: Visa
• wallet: Paypal
• other

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