SHURFLO 4008 12V RV Fresh Water Pump – 3.0 GPM, 55 PSI

Dependable SHURFLO 4008 12V RV Fresh Water Pump

The SHURFLO Revolution 4008 12V RV Fresh Water Pump delivers dependable water pressure for RV faucets, showers, toilets, and other onboard plumbing fixtures. Designed for multi-fixture freshwater systems, the pump delivers up to 3.0 gallons per minute at a 55 PSI shutoff pressure.

Whether you are replacing a worn factory pump or upgrading your RV plumbing system, the SHURFLO 4008 provides the flow and pressure needed for comfortable freshwater use on the road.

Quiet Operation with Reduced Cycling

The SHURFLO Revolution 4008 uses an internal bypass to maintain smoother water flow and reduce rapid on-and-off cycling. This helps minimize pump noise and pressure fluctuations when using lower-flow fixtures.

The bypass design also eliminates the need for an accumulator tank in many standard RV installations.

Self-Priming and Run-Dry Capable

The self-priming design allows the pump to lift water vertically up to 6 feet, giving installers greater flexibility in positioning the pump relative to the fresh water tank.

The pump can also run dry without damage during normal operation, providing added protection when the fresh water tank is temporarily empty, or the water supply is interrupted.

Automatic On-Demand Water Pressure

An integrated pressure switch automatically activates the pump when a faucet or fixture is opened. The pump shuts off when the plumbing system reaches approximately 55 PSI, providing convenient on-demand operation without a separate manual pump control at each fixture.

Built for RV Fresh Water Systems

The four-chamber diaphragm design, durable Santoprene diaphragm, EPDM valves, and integrated check valve provide reliable performance in RV and camper fresh water applications. Thermal overload protection automatically shuts the motor down if it becomes too hot and allows it to restart after it cools.

The 4008-101-A65 OEM model and 4008-101-E65 aftermarket model share the same primary performance specifications, making the SHURFLO 4008 a trusted replacement option for many recreational vehicles and motorhomes.

Feature bullets

3.0 GPM Fresh Water Flow

Delivers up to 3.0 gallons per minute for dependable water flow through RV faucets, showers, toilets, and other plumbing fixtures.

55 PSI Automatic Operation

The integrated pressure switch automatically starts the pump when water is needed and shuts it off when system pressure reaches approximately 55 PSI.

Reduced Noise and Rapid Cycling

An internal bypass supports smoother water delivery while helping reduce rapid cycling, pressure fluctuations, and unnecessary pump noise.

Self-Priming up to 6 Feet

The pump can prime vertically up to 6 feet, offering greater installation flexibility between the fresh water tank and the pump location.

Run-Dry and Thermal Protection

Designed to run dry without damage during normal use and equipped with thermal-overload protection and automatic restart.

Technical specifications

The SHURFLO 4008 is designed primarily for:

• Recreational vehicles
• Travel trailers
• Fifth wheels
• Motorhomes
• Camper vans
• Truck campers
• Multi-fixture RV fresh water systems
• General fresh water transfer applications

What’s included

• One SHURFLO Revolution 4008 12V water pump
• Product documentation

Frequently asked questions

What is the difference between SHURFLO 4008-101-A65 and 4008-101-E65?

The 4008-101-A65 is the OEM model designation, while the 4008-101-E65 is the aftermarket version. Both models have the same primary 12V, 3.0 GPM, and 55 PSI performance specifications.

How much water does the SHURFLO 4008 deliver?

The pump delivers up to 3.0 gallons per minute under open-flow conditions. Actual flow decreases as plumbing-system pressure increases.

Is the SHURFLO 4008 self-priming?

Yes. The pump can self-prime vertically up to approximately 6 feet, provided the plumbing system is installed correctly and has no air leaks or excessive restrictions.

Can the SHURFLO 4008 run dry?

Yes. The pump is designed to run dry without damage under normal operating conditions. It remains an intermittent-duty pump and should not be used for continuous high-pressure operation.

Does the pump turn on automatically?

Yes. The built-in pressure switch automatically starts the pump when a fixture is opened and shuts it off when system pressure reaches approximately 55 PSI.

Does the SHURFLO 4008 need an accumulator tank?

An accumulator tank is generally not required because the internal bypass helps control flow and reduce rapid cycling. However, an accumulator may still be used when desired for a specific plumbing setup.

What size plumbing connections does it use?

The SHURFLO 4008 has ½-inch–14 NPSM male ports. Compatible swivel fittings should be used for proper installation.

Should a strainer be installed before the pump?

Yes. SHURFLO recommends using an adequate 50-mesh inlet strainer to prevent debris from entering the pump. Confirm whether a strainer is included with the specific package before ordering.

Is this pump intended for continuous operation?

No. The SHURFLO 4008 is designed for intermittent-duty RV fresh water applications. It should not be used for continuous high-pressure applications, such as reverse osmosis filtration systems.