







🚤 Stay afloat, stay ahead — bilge pumping made effortless!
The Attwood 4505-7 Sahara S500 Automatic bilge pump delivers a robust 1100 gallons per hour flow at 13.6 volts, designed specifically for larger recreational boats and yachts over 20 feet. Its compact, all-in-one package includes a mercury-free automatic switch, wire seals, strainer, and 29-inch copper wiring, ensuring quick installation in tight spaces. Engineered for reliable, maintenance-free bilge water removal, it meets all automatic pump requirements for vessels with sleeping accommodations, making it an essential safety upgrade for serious boaters.






| Brand | attwood |
| Color | White |
| Material | Plastic |
| Style | S1100 |
| Product Dimensions | 7.43"L x 10.93"W x 8.62"H |
| Power Source | Corded Electric |
| Item Weight | 1.1 Pounds |
| Maximum Flow Rate | 18.33 Gallons Per Minute |
| Maximum Lifting Height | 3.3 Feet |
| Voltage | 13.6 Volts |
| Global Trade Identification Number | 00022697451170 |
| Manufacturer | Attwood |
| UPC | 022697451170 |
| Specific Uses For Product | personal |
| Item Package Dimensions L x W x H | 7.28 x 7.17 x 3.35 inches |
| Package Weight | 0.51 Kilograms |
| Item Dimensions LxWxH | 7.43 x 10.93 x 8.62 inches |
| Brand Name | attwood |
| Country of Origin | China |
| Model Name | Attwood Boating Tools |
| Suggested Users | Unisex-Adult |
| Number of Items | 1 |
| Part Number | 4511-7 |
| Included Components | End Product & Information |
| Size | One size |
| Sport Type | Boating |
L**K
Good pump
Worked great for our boat.
D**N
Very reliable.
Installed three years ago, very reliable.
J**.
Excellent
Excellent bilge pump. Works great
T**Y
Reliable Bilge Pump - Works as Expected
The Attwood 4511-7 Sahara S1100 Automatic Bilge Pump has been a reliable addition to my boat. With a capacity of 1100 GPH and a 12-Volt, 1.5-Amp draw, it efficiently keeps my bilge dry and performs exactly as expected.Installation is straightforward, and the pump operates automatically, which is a huge convenience. It kicks in when needed and shuts off once the water is cleared, providing peace of mind while on the water.Although I’ve noticed the need to replace it yearly, it consistently performs well throughout its lifespan. For the price and reliability it offers, it's a routine maintenance step I’m willing to take.Overall, the Attwood Sahara S1100 is a dependable bilge pump that gets the job done. Highly recommended for its performance and ease of use!
L**S
Perfect fit to the original pump.
This pump replaced the existing pump that was identical to what was originally installed from the dealer in 2018. I was able to use the existing cradle, which saved me the trouble of having to remove the base screw. Especially being this pump was installed in a very hard to reach area. Hopefully, it last as long or longer than the original.
J**Y
Great flow
Very powerful little pump. Impressive flow, and not really loud. Was a great replacement for our old pump that had seized up.
N**L
Great pump
I love the auto feature. It works really well in my 18 foot bass boat. I buy it again.
K**Y
Works good
Works good
Trustpilot
5 days ago
1 month ago