--- product_id: 302438812 title: "Attwood 4511-7 Sahara S1100 Automatic Bilge Pump, 1100 GPH, 12-Volt, 1.5-Amp Draw, ΒΎ-Inch Interior Diameter Hose, 29-Inch Wire" brand: "attwood" price: "$42.36" currency: USD in_stock: false url: https://www.desertcart.us/products/302438812-attwood-4511-7-sahara-s1100-automatic-bilge-pump-1100-gph store_origin: US region: United States of America --- # 1100 GPH Power 12V Efficiency Compact Design Attwood 4511-7 Sahara S1100 Automatic Bilge Pump, 1100 GPH, 12-Volt, 1.5-Amp Draw, ΒΎ-Inch Interior Diameter Hose, 29-Inch Wire **Brand:** attwood **Price:** $42.36 **Availability:** ❌ Out of Stock ## Summary > πŸš€ Elevate Your Boating Experience with Effortless Water Management! ## Quick Answers - **What is this?** Attwood 4511-7 Sahara S1100 Automatic Bilge Pump, 1100 GPH, 12-Volt, 1.5-Amp Draw, ΒΎ-Inch Interior Diameter Hose, 29-Inch Wire by attwood - **How much does it cost?** $42.36 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/302438812-attwood-4511-7-sahara-s1100-automatic-bilge-pump-1100-gph) ## Best For - attwood enthusiasts ## Why This Product - Trusted attwood brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **πŸ”§ Easy Installation:** Quickly installs in tight spaces with a horizontal mount, making setup a breeze. - β€’ **πŸ”’ Durable & Reliable:** Includes a mercury-free switch and robust components for long-lasting performance. - β€’ **🌊 Automatic Operation:** Meets automatic switch pump requirements for vessels 20 feet and over, ensuring peace of mind. - β€’ **πŸ“ Versatile Compatibility:** Compatible with 1-1/8” interior diameter hoses, making it adaptable for various setups. - β€’ **🚀 High Capacity Performance:** Effortlessly pumps 1100 gallons per hour, perfect for larger recreational boats. ## Overview The Attwood 4511-7 Sahara S1100 Automatic Bilge Pump is engineered for larger recreational boats, delivering a powerful 1100 GPH flow rate. Designed for easy installation and reliable operation, this compact pump features a durable build, automatic switch compliance, and comes with all necessary components for a hassle-free setup. ## Description This Attwood Sahara S1100 Automatic Bilge Pump provides reliable bilge water pumping for boats of any size. This pump meets the requirement of an automatic-switch bilge pump for any vessels 20 feet and over with sleeping accommodations. This S1100 model is high-capacity for larger boats and yachts. This pump is a compact and durable package that includes the pump, wire seals, strainer, and mercury-free switch all in one unit that installs quickly and easily in tight spaces. It mounts horizontally only. This 12-volt, 1.5-amp draw pump is rated for 1,100 GPH performance at open flow (at voltage of 13.6 volts DC), and it draws only 1.5 amps at open flow. It comes with a 29-inch length of 16-gauge caulked and tinned copper wire, and uses a 1-1/8”-inch interior diameter hose. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing of the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance. ## Features - Reliably provides bilge water pumping for larger recreational boats - Meets automatic switch pump requirements for any vessels 20 feet and over with sleeping accommodations - High capacity for larger boats and yachts - Compact and durable package includes pump, wire seals, strainer, and mercury-free switch in one unit - Installs quickly and easily in tight spaces, mounts horizontally only.12-volt, 1.5-amp draw pump is rated for 1100 GPH performance at open flow (at voltage of 13.6 volts DC).Comes with a 29-inch length of 16-gauge caulked and tinned copper wire, and uses a 1-1/8”-inch interior diameter hose ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001O0DEEY | | ASIN | B001O0DEEY | | Best Sellers Rank | #33,538 in Sporting Goods ( See Top 100 in Sporting Goods ) #47 in Boat Plumbing | | Brand Name | attwood | | Color | White | | Customer Reviews | 4.6 4.6 out of 5 stars (538) | | Customer reviews | 4.6 4.6 out of 5 stars (538) | | Date First Available | 6 August 2012 | | Department | Unisex-Adult | | Flow Rate | 18.33 Gallons Per Minute | | Global Trade Identification Number | 00022697451170 | | Included Components | End Product & Information | | Is Discontinued By Manufacturer | No | | Item Dimensions L x W x H | 18.9L x 27.8W x 21.9H centimeters | | Item Type Name | boating-tools | | Item Weight | 499 g | | Item model number | 4511-7 | | Manufacturer | Attwood | | Manufacturer | Attwood | | Manufacturer Part Number | 4511-7 | | Material Type | Plastic | | Maximum Lifting Height | 3.3 Feet | | Model Number | 4511-7 | | Number of Items | 1 | | Power Source | Corded Electric | | Product Dimensions | 18.87 x 27.76 x 21.89 cm; 498.95 g | | Product Style | S1100 | | Specific Uses For Product | personal | | UPC | 022697451170 | | Unit Count | 1 Count | | Voltage | 13.6 Volts | ## Product Details - **Brand:** attwood - **Colour:** White - **Material:** Plastic - **Product dimensions:** 18.9L x 27.8W x 21.9H centimeters - **Style:** S1100 ## Images ![Attwood 4511-7 Sahara S1100 Automatic Bilge Pump, 1100 GPH, 12-Volt, 1.5-Amp Draw, ΒΎ-Inch Interior Diameter Hose, 29-Inch Wire - Image 1](https://m.media-amazon.com/images/I/71D8Tqi74bL.jpg) ## Available Options This product comes in different **Pattern, Style** options. ## Questions & Answers **Q: What is the hose outlet size? Title says 3/4", description says 1-1/8", comments say both...** A: The 500 and 750 use 3/4 and the 1100 uses 1-1/8 inch. **Q: Do these bilge pumps run for a period of time after all water is pumped from bildge?** A: This pump does NOT continue to run for a period of time. As soon as the float switch drops (water falls below the thresh-hold necessary to keep the float switch raised) the pump stops. **Q: the sahara has two versions of the auto pump 1100? 1100 and S1100, why is the S1100 more expensive?** A: It is my understanding that while the S1100 is indeed a model, one of Attwood’s more powerful bilge pumps, the 1100 refers to that models GPH ( gallons per hour). I am unable to locate an 1100 model. Hope this helps. **Q: The model advertised is S1100 but pictured is S750. Which pump is it?** A: The S1100 is 1100 GPM. Mine has been in service for about 3 years with no problems. The only negative is that the water level has to get about halh way up the pump before the internal float switchs on the pump. ## Frequently Bought Together - Attwood 4505-7 Sahara S500 Automatic - attwood Tsunami Aerator Pump - Attwood Sahara MK2 Automatic Bilge Pump --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/302438812-attwood-4511-7-sahara-s1100-automatic-bilge-pump-1100-gph](https://www.desertcart.us/products/302438812-attwood-4511-7-sahara-s1100-automatic-bilge-pump-1100-gph) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-10*