---
product_id: 14525127
title: "Attwood 4505-7 Sahara S500 Automatic"
brand: "attwood"
price: "€ 3.98"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.ie/products/14525127-attwood-4505-7-sahara-s500-automatic
store_origin: IE
region: Ireland
---

# 13.6V power efficiency 1100 GPH high flow rate Compact all-in-one design Attwood 4505-7 Sahara S500 Automatic

**Brand:** attwood
**Price:** € 3.98
**Availability:** ❌ Out of Stock

## Summary

> 🚤 Stay afloat, stay ahead — bilge pumping made effortless!

## Quick Answers

- **What is this?** Attwood 4505-7 Sahara S500 Automatic by attwood
- **How much does it cost?** € 3.98 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/14525127-attwood-4505-7-sahara-s500-automatic)

## 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

- • **Space-Savvy Design:** Compact, durable unit fits snugly in tight engine compartments—no compromises.
- • **Built for Bigger Boats:** Meets automatic pump requirements for vessels 20ft+ with sleeping quarters.
- • **Plug & Play Installation:** Comes complete with wire seals, strainer, and copper wiring for quick setup.
- • **Seamless Auto-Activation:** Mercury-free automatic switch ensures hassle-free, reliable operation every time.
- • **Powerful 1100 GPH Pumping:** Keep your vessel dry with industry-leading bilge water removal capacity.

## Overview

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.

## Description



## 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 |
|---------------|-------|
| 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 |

## Product Details

- **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

## Images

![Attwood 4505-7 Sahara S500 Automatic - Image 1](https://m.media-amazon.com/images/I/71D8Tqi74bL.jpg)
![Attwood 4505-7 Sahara S500 Automatic - Image 2](https://m.media-amazon.com/images/I/71n6sw9OdXL.jpg)
![Attwood 4505-7 Sahara S500 Automatic - Image 3](https://m.media-amazon.com/images/I/71ONOxsTyIL.jpg)
![Attwood 4505-7 Sahara S500 Automatic - Image 4](https://m.media-amazon.com/images/I/71W9vcQxuaL.jpg)
![Attwood 4505-7 Sahara S500 Automatic - Image 5](https://m.media-amazon.com/images/I/713krHOUCFL.jpg)

## Available Options

This product comes in different **Pattern Name, Size, 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good pump
*by L***K on May 27, 2025*

Worked great for our boat.

### ⭐⭐⭐⭐⭐ Very reliable.
*by D***N on December 29, 2024*

Installed three years ago, very reliable.

### ⭐⭐⭐⭐⭐ Excellent
*by J***. on May 23, 2025*

Excellent bilge pump. Works great

## Frequently Bought Together

- Attwood 4505-7 Sahara S500 Automatic
- attwood Tsunami Aerator Pump
- Attwood Sahara MK2 Automatic Bilge Pump

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-12*