PENTAIR SHURFLO 4008-101-A65 3.0 GPM RV Water Pump Revolution, 12V Review (2026)

What this product is

This is the standalone Pentair Shurflo Revolution 4008-101-A65, a 12-volt DC RV water pump rated at 3.0 gallons per minute and up to 55 PSI shut-off pressure, sold as the bare pump without the strainer or hose fittings bundled with some other listings of the same model. The Revolution series is one of the most widely used RV pump families, and this exact pump is a common factory-installed unit across many trailer and motorhome brands, so it is frequently bought specifically as a direct replacement rather than a first-time install. It measures about 8.1 inches long, 4.9 inches wide, and 4.3 inches tall, and uses 1/2-inch NPMS male ports on both sides.

Performance and protection features

The pump draws up to 7.5 amps at peak and delivers its rated 3.0 GPM through a one-piece diaphragm design with an internal bypass intended to reduce rapid cycling, which is the annoying on-off chattering some cheaper pumps exhibit when a faucet is only cracked partway open. It includes thermal protection to prevent overheating, a built-in check valve to stop backflow when the pump is off, and can run dry without damage, which matters if a fresh tank runs empty mid-trip and the pump keeps drawing air for a moment before someone notices. It is also self-priming and can be mounted in any orientation, which gives some flexibility for tight installation spaces.

What's not included

Because this listing is the bare pump, buyers should plan to separately source an inlet strainer to protect the pump from sediment, along with any hose fittings or wiring connectors needed to match their existing plumbing, rather than expecting a full bolt-in kit in the box. That is a meaningful difference from bundle listings of the same pump that include a twist-on strainer, and it is worth checking before ordering if the RV's old strainer is not being reused for the new install. The pump is a direct fit for many factory Shurflo, Flojet, and WFCO or Arterra installations, which is the main reason someone would specifically seek out this bare-pump version instead of a bundled kit in the first place.

Where it fits versus rivals

In its own water pump comparison, this pump ranks third among seven options, behind a bundled version of the same Shurflo pump that includes a strainer and a SEAFLO alternative with similar flow and pressure, and ahead of an older Shurflo diaphragm pump and a two-pack listing further down the list. The main reason the bundled Shurflo and the SEAFLO pump rank slightly ahead is that both include a strainer in the box, so buyers get a more complete kit for a comparable price, while this listing trades that convenience for being the simpler, standalone version of a proven pump.

Who should buy it

This pump is the right pick for anyone replacing a failed factory Shurflo Revolution 4008-101 pump who already has a compatible strainer and fittings on hand, or who specifically wants the bare pump to pair with different accessories than the stock bundle offers. First-time buyers without existing strainer hardware should compare the price against a bundled version of the same pump before ordering, since buying a strainer separately may end up costing more than simply choosing a listing that already includes one in the box, and it saves an extra shopping trip before the water system is usable again.

Frequently asked questions