Attwood Sahara MK2 Automatic Bilge Pump
✅ PROS
- 1100 GPH rated flow moves water aggressively—clears a flooded bilge fast
- Built-in automatic float switch means no separate sensor wiring or mounting
- Compact 3-inch footprint fits tight bilge compartments where larger pumps won't
❌ CONS
- Float switch mechanism prone to sticking after debris exposure—requires frequent cleaning
- Plastic housing feels thin; several buyers report cracking at hose barb under vibration
- Not truly submersible-rated despite marketing—seal fails if fully submerged for extended periods
The Verdict
The Attwood Sahara MK2 Automatic Bilge Pump: A Workhorse With a Quirk
When your boat’s taking on water, you don’t want drama—you want a pump that just works. The Attwood Sahara MK2 automatic bilge pump is a popular choice for small to mid-size boats, and at 3.7 stars from 185 ratings, it’s clear buyers have strong opinions. Here’s the real story after digging through the feedback and specs.
What You Actually Get
The box contains the pump itself with a built-in automatic float switch, a 3/4-inch barbed hose outlet, and mounting hardware. No separate control panel required—the integrated switch handles the on/off cycling. The unit measures roughly 6 inches tall with a 3-inch footprint, making it a fit for tight bilge compartments. It’s rated at 1100 gallons per hour at open flow, which drops to around 800 GPH at a typical 3-foot head height.
Performance: The Good
When it works, it works well. The 1100 GPH rating is genuine—several reviewers note it cleared standing water fast. One buyer wrote, “Pumped out my 18-foot bass boat in under three minutes after a heavy rain. Impressive for the size.” The automatic float switch is a genuine convenience; you don’t need a separate panel or manual toggle. For a weekend angler who doesn’t want to think about bilge management, that’s a real plus.
The compact design is another win. It slides into tight spaces under deck plates where bigger pumps won’t fit. And at this price point, it’s affordable enough to keep a spare onboard.
The Honest Shortcomings
Here’s where the 3.7 rating comes from. The float switch is the weak link. Multiple reviewers report it sticking in the closed position after debris—leaves, fishing line, or just grime—gets into the mechanism. One long-time boater put it bluntly: “Worked great for two months, then the float jammed. Cleaned it, worked again. It’s a maintenance item, not a set-and-forget pump.” If you run in silty or weedy water, plan on pulling this pump out for cleaning monthly.
The housing is another concern. The plastic feels thinner than competitors like Rule or Johnson. A handful of reviews mention cracking around the hose barb after a season of vibration, particularly on larger boats with more engine shake. It’s not universal, but it’s common enough to note.
And despite the “automatic” label, this isn’t a fully submersible pump. It’s designed to sit in the bilge with the float switch above the waterline. If your bilge floods deep enough to fully submerge the unit, the seal can fail. That’s a limitation worth knowing if you run in rough conditions.
Who Should Buy This
- Kayak or small jon boat owners who need a lightweight, compact pump for occasional water removal—this is perfect.
- Budget-conscious weekend boaters who’ll accept regular maintenance in exchange for a lower upfront cost.
- DIY installers who want a simple hookup without wiring a separate float switch.
Skip It If
- You run a larger vessel (20+ feet) where a failed bilge pump is a safety-critical failure—spend more on a Rule or Johnson.
- You boat in debris-heavy water and don’t want to clean a float switch every few weeks.
- You need a true submersible pump for deep bilge applications.
FAQ
Q: Is this pump truly automatic, or do I need a switch? A: It has a built-in float switch that activates the pump when water rises. No separate control needed. But the float can stick, so test it monthly by lifting the float manually.
Q: What size hose does it use? A: A 3/4-inch barbed outlet. Use reinforced hose with stainless clamps—don’t cheap out on clamps here, because vibration loosens them.
Q: Can I use this as a livewell pump? A: No. It’s designed for bilge water only. Debris and fish scales will clog the float mechanism quickly.
The Verdict
Buy it if you need an affordable, compact automatic pump for a small boat and don’t mind quarterly cleaning. Skip it if you’re equipping a larger vessel where reliability is non-negotiable—invest in a higher-end pump there.
The Sahara MK2 is a decent budget workhorse with a known flaw. At 3.7 stars, it earns exactly that: average performance with caveats. For the price, it’s a reasonable stopgap, but don’t expect it to be the last bilge pump you ever buy.
Rating: 3.7/5
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.