Shurflo 4008 Series RV Water Pump

The Shurflo 4008 is a dependable workhorse pump that delivers solid water pressure and reliable self-priming performance for most RV and camper setups.

4.3

HitchHaven score4.3 out of 5 · our editorial rating

3.0 GPM flow rate for consistent water delivery
Self-priming design up to 6 vertical feet
Thermal overload protection prevents motor burnout
Built-in check valve reduces water hammer
Quiet by design with four-chamber diaphragm technology
Runs dry without damage to internal components

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Overview Specs Pros & cons Full review Related

The verdict

The Shurflo 4008 is a dependable workhorse pump that delivers solid water pressure and reliable self-priming performance for most RV and camper setups. While it's not silent and the strainer requires occasional attention, its durability and consistent flow make it a trusted choice for full-time RVers and weekend campers alike.

Spec plate

Flow Rate: 3.0 GPM
Voltage: 12V DC
Self-Priming Lift: Up to 6 ft
Max Pressure: 45 PSI
Weight: 3.5 lbs

Pros & cons

What we like

Reliable self-priming even after tank sits empty
Compact size fits tight RV storage compartments
Runs noticeably quieter than many comparable pumps
Easy to wire with standard RV 12V connections
Durable diaphragm design lasts multiple seasons
Good water pressure for showers and faucets

What to watch

Occasional cycling or pulsing at low flow rates
Inlet strainer can clog and needs regular cleaning
Mounting bracket feels flimsy compared to pump body
Can be difficult to source genuine replacement parts
Pressure switch sometimes needs manual adjustment over time

Full review

The Shurflo RV Water Pump 4008 is a self-priming, diaphragm-style water pump engineered specifically for recreational vehicles, campers, and marine applications where reliable freshwater delivery is essential. Built by Shurflo, a name long trusted in the RV plumbing industry, this pump is designed to draw water efficiently from onboard freshwater tanks and deliver consistent pressure to sinks, showers, and other fixtures throughout the rig. Its compact footprint makes it easy to install in tight under-sink or storage compartments common in travel trailers, fifth wheels, and motorhomes, while its lightweight construction ensures it doesn't add unnecessary bulk to your vehicle's overall payload.

At the heart of the 4008 model is Shurflo's well-known diaphragm pump technology, which uses a three-chamber design to produce smooth, consistent water flow with minimal pulsation, a common complaint with lesser pumps. The unit typically delivers around 3.0 gallons per minute, enough to comfortably support simultaneous use of a kitchen faucet and bathroom fixtures without a noticeable drop in pressure. Internal pressure switches automatically cycle the motor on and off as needed, so the pump only runs when water is actually being drawn, which helps conserve battery power on 12-volt DC systems commonly found in RVs and campers. The pump also includes a built-in check valve to prevent backflow, helping maintain prime and reduce strain on the motor during repeated use.

Durability and ease of maintenance are central to the design philosophy behind the Shurflo 4008, as the pump features a self-cleaning design, FDA-approved materials that are safe for potable water use, and runs quietly compared to many competing models, making it well-suited for early morning or late-night use without disturbing sleeping occupants. Installation is straightforward, with standard mounting brackets and inlet/outlet ports that work with common RV plumbing fittings, so most owners can complete the swap with basic hand tools. Whether you're upgrading a failing factory pump or outfitting a custom camper build, the Shurflo 4008 offers dependable water delivery, energy-efficient operation, and the kind of proven reliability that keeps your RV's plumbing system running smoothly mile after mile.

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