Shurflo Aqua King II Fresh Water Pump | 4.0 GPM | 275-4158153E75
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You have 30 days to request a return. All sale items are final sale.
Shurflo Aqua King II Fresh Water Pump — 4.0 GPM
Reliable, consistent freshwater pressure for boats with multiple fixtures. The Shurflo Aqua King II delivers smooth, steady flow to your galley, head, and shower without the pressure spikes or constant cycling that come with basic pump setups.
A built-in mechanical bypass automatically adjusts flow to match demand — from a slow trickle at the tap to full pressure at the shower — without needing a separate accumulator tank. The motor is built for the marine environment and can run dry without damage, so a low tank won’t cause a costly failure.
Key Features
- Mechanical bypass varies flow rate automatically — no accumulator required
- Operates smoothly at low flow without cycling on and off
- Electro-coated seamless motor shell resists corrosion
- O-ring sealed end bells and fully sealed wire entries on motor and pressure switch
- Dry-run safe — pump will not be damaged if run without water
- Ignition protected and thermally protected
- Includes inlet strainer and 1/2" hose barb fittings
Parts Desk Insights
Best use case: A strong fit for mid-size cruising and fishing boats with two or three water outlets where consistent pressure matters but peak flow demand is moderate. If your vessel has higher simultaneous demand — multiple heads, a shower, and a galley all running at once — step up to the Shurflo Aqua King II Supreme (5.0 GPM) for greater flow capacity. For a complete dual-pump freshwater and washdown solution, see the Shurflo High Flow System II. Need a replacement part for an existing Shurflo pump? See the Shurflo Pump Replacement Cartridge.
SKU: 275-4158153E75
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.