SHUR FLO Water Pump Gpm Box Shurflo 3.0 55PSI 12V 3901-0216

( Brand: Shur Flo ), ( Part Type: Pump Box ), ( Manufacturer Part Number: 3901-021 )

Review SHUR FLO Shurflo Water Pump 3.0 Gpm 55psi 12v New In Box fits MARINE

The Shurflo 3901-021 water pump is a versatile and reliable solution for your marine water supply needs. This 12V DC diaphragm pump is capable of delivering a flow rate of 3.0 gallons per minute (GPM) and can handle a maximum operating pressure of 55 pounds per square inch (psi).

The Shurflo 3901-021 water pump is designed with a durable and corrosion-resistant housing, making it an ideal choice for the marine environment. The pump's compact size, measuring 6.2 inches long by 4.2 inches wide by 3.6 inches high, makes it easy to install in various applications.

One of the key features of this Shurflo water pump is its self-priming capability. This means that it can draw water from a source below the pump, making it suitable for use in well systems, sump pits, or other applications where the water level is not constant.

The Shurflo 3901-021 water pump also comes with a built-in temperature relief valve, which helps prevent the pump from overheating and damaging the motor. The pump's thermal relief valve is designed to automatically open when the temperature reaches a certain threshold, allowing excess water to flow out and cool down the pump.

This Shurflo water pump is also easy to install, with a simple wiring harness and clear markings on the pump housing for easy identification of the various connections. The pump is also compatible with most standard marine water hoses and fittings, making it a convenient and flexible option for a wide range of marine applications.

In summary, the Shurflo 3901-021 water pump is a high-performance and reliable solution for your marine water supply needs. With its self-priming capability, durable construction, and built-in temperature relief valve, this pump is well-equipped to handle the demands of the marine environment while providing a steady and dependable water supply.

The Shurflo 3901-021 water pump is a 12V, 3.0 GPM, 55 PSI marine water pump suitable for various applications including RVs, boats, and other mobile water systems. Here are some pros and cons that may help you in deciding whether to purchase this water pump:

1. High Flow Rate: This water pump can deliver a flow rate of 3.0 gallons per minute, which is relatively high compared to many other water pumps in its class.

2. Wide Operating Pressure Range: With a maximum operating pressure of 55 PSI, this water pump can handle a variety of water system requirements.

3. Compact Design: The Shurflo 3901-021 water pump is relatively small and lightweight, making it easy to install in confined spaces.

4. Durable Construction: This water pump features a durable cast iron housing and a ceramic shaft seal, which can withstand the rigors of marine and RV applications.

5. Easy Installation: The Shurflo 3901-021 water pump comes with a pre-installed thermostat and a strainer, making it easier to install compared to some other water pumps.

1. Power Consumption: This water pump consumes 12.6 amps at maximum flow rate, which may require a larger battery or an additional power source.

2. Noise Level: Some users have reported that this water pump can be relatively loud, especially when operating at high flow rates.

3. Limited Warranty: The Shurflo 3901-021 water pump comes with a limited one-year warranty, which may be shorter than some other water pumps in its class.

In conclusion, the Shurflo 3901-021 water pump offers a high flow rate, wide operating pressure range, and durable construction, making it a suitable option for various water system applications. However, it may consume more power and be relatively loud compared to some other water pumps. Additionally, its limited warranty may be a concern for some users. Ultimately, the decision to purchase this water pump depends on your specific requirements and preferences. If you need a high flow rate and are willing to accept the noise level and power consumption, then this water pump may be a good choice for you. However, if you prioritize quiet operation and a longer warranty, you may want to consider other options.

part # 3901021 prices

• $30.40-$85.00

specifications vesselvent:

• for models: Marine
• brand: Shur Flo
• part type: Pump Box
• manufacturer part number: 3901-021

general vesselvent:

• condition: New
• Parts Accessories > Boat Parts > Plumbing Ventilation

shipping vesselvent:

• cost: $18.50
• class: Standard
• transit: 8-11 Days
• carrier: USPS
• service: USPS Ground Advantage
• type: Calculated

seller vesselvent:

• rating: 100.0%
• # reviews: 968

offer vesselvent:

• quantity: 1
• availability: In Stock
• best offers: True
• started: February 24, 2026
• options: Ship-to-home
• sold: 0

payments vesselvent:

• credit card: Discover
• other
• wallet: Paypal

returns vesselvent:

• policy: No Returns

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