GMB SX-1ZMJ Mechanical Fuel Air Pump Nq 4.5L 5.1L 5.2L V8

( Brand: Gmb ), ( Type: Mechanical Fuel Pump ), ( Manufacturer Part Number: SX-1ZMJ ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C849 13-20 ), ( Placement On Vehicle: Air Fuel Delivery Fuel Pumps ), ( Compatible Year: 1964 1963 1962 1961 1960 1959 1958 1957 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gmb Mechanical Fuel Pump )

Review GMB Mechanical Fuel Pump Plymouth 4.5l 5.1l 5.2l V8 Air Nq fits SAVOY 1957–1964

The GMB SX-1ZMJ Mechanical Fuel Pump is a high-performance replacement option for the mechanical fuel pumps used in 1957-1964 Plymouth Savoy vehicles equipped with 4.5L, 5.1L, and 5.2L V8 engines. This fuel pump is designed to deliver reliable and consistent fuel flow to ensure smooth engine operation.

The GMB SX-1ZMJ Mechanical Fuel Pump is manufactured using high-quality materials and advanced manufacturing processes to ensure durability and longevity. The pump housing is made of cast iron for superior strength and heat resistance, while the impeller and diaphragm are made of durable rubber materials. The pump also features a heavy-duty mechanical design, which eliminates the need for electrical components, making it an ideal choice for classic cars and restorations where simplicity and reliability are key.

The pump's impeller design provides an efficient fuel flow rate, ensuring that the engine receives an adequate fuel supply under all operating conditions. The diaphragm is designed to be resilient to fuel pressure variations and can handle the demands of high-performance engines. The pump's inlet and outlet connections are threaded for easy installation, and it comes with the necessary mounting hardware.

The GMB SX-1ZMJ Mechanical Fuel Pump also features a unique air elimination system, which helps prevent air from entering the fuel system. The system includes a vented diaphragm and a fuel return line, which work together to keep air bubbles from forming and blocking fuel flow to the engine.

Installation of the GMB SX-1ZMJ Mechanical Fuel Pump is straightforward. Simply remove the old fuel pump, install the new one in its place, and connect the fuel lines. The pump comes with clear installation instructions and is backed by a one-year warranty for added peace of mind.

Overall, the GMB SX-1ZMJ Mechanical Fuel Pump is an excellent choice for anyone looking for a reliable and durable replacement fuel pump for their 1957-1964 Plymouth Savoy with a 4.5L, 5.1L, or 5.2L V8 engine. Its high-quality construction, efficient fuel flow, and air elimination system make it a top pick for classic car enthusiasts and restoration projects.

The SX-1ZMJ mechanical fuel pump from GMB is a popular choice among classic car enthusiasts for their 1957-1964 Plymouth Savoy V8 engines with 4.5L, 5.1L, and 5.2L displacements. This pump is designed to replace the original mechanical fuel pump and provide better performance and reliability. Here are some pros and cons to consider before making a purchase.

1. Improved Flow Rate: The GMB SX-1ZMJ mechanical fuel pump delivers a higher flow rate compared to the original equipment, ensuring adequate fuel supply to the carburetor, especially during heavy acceleration.

2. Durability: This pump is built with high-quality materials, such as hardened steel shafts and brass housing, making it more durable and resilient than the original OEM pump.

3. Easy Installation: The GMB SX-1ZMJ mechanical fuel pump is a direct replacement for the stock pump, making installation relatively straightforward. No major modifications are required, which saves time and money.

4. Fuel Efficiency: The increased flow rate of the GMB pump can lead to better fuel atomization and combustion, potentially improving fuel efficiency and reducing emissions.

5. Longevity: With its robust design and high-quality materials, the GMB mechanical fuel pump is expected to last longer than the original pump, reducing the need for frequent replacements.

1. Cost: The GMB SX-1ZMJ mechanical fuel pump is more expensive than the original OEM pump. However, the added performance and reliability may justify the additional investment for some enthusiasts.

2. Size: The GMB pump may be slightly larger than the stock pump, which could require some minor modifications to the fuel tank or lines during installation.

3. Noise: Some users have reported that the GMB pump operates louder than the stock pump, which could be a concern for those seeking a quieter operation.

In conclusion, the GMB SX-1ZMJ mechanical fuel pump offers several benefits, including improved flow rate, durability, easy installation, fuel efficiency, and longevity. However, it comes with some drawbacks, such as a higher cost, potential size differences, and increased noise. Ultimately, the decision to purchase this pump depends on the individual's priorities, budget, and personal preferences. If the enhanced performance and reliability are valued, the GMB mechanical fuel pump is a worthy investment for the 1957-1964 Plymouth Savoy V8 engine.

Details:

GMB Mechanical Fuel Pump for 1957-1964 Plymouth Savoy 4.5L 5.1L 5.2L V8 Air nq: Status: In Stock.

part #: sx1zmj prices

• $42.03-$57.77

specifications pumpunite:

• for models: Savoy
• for makes: Plymouth
• for years: 1957-1964
• brand: Gmb
• type: Mechanical Fuel Pump
• manufacturer part number: SX-1ZMJ
• manufacturer warranty: 1 Year
• interchange part number: C849 13-20
• placement on vehicle: Air Fuel Delivery Fuel Pumps
• compatible year: 1964 1963 1962 1961 1960 1959 1958 1957
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gmb Mechanical Fuel Pump

general pumpunite:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Pumps Sending Units

payments pumpunite:

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

returns pumpunite:

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

seller pumpunite:

• # reviews: 622677
• rating: 99.5%
• city: Indianapolis, Indiana

offer pumpunite:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: February 14, 2026
• quantity: 2

shipping pumpunite:

• service: Standard, Expedited
• transit: 5-9 Days
• class: Standard, Expedited
• type: Fixed
• cost: $0.00

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