---
product_id: 263494558
title: "1749-4 Turbo 4000 Series II in-Line Blower, for 4-Inch Interior Diameter Vent Hose, Water Resistant, 12-Volt"
brand: "attwood"
price: "₨27538"
currency: LKR
in_stock: true
reviews_count: 5
category: "Attwood"
url: https://www.desertcart.lk/products/263494558-1749-4-turbo-4000-series-ii-in-line-blower-4
store_origin: LK
region: Sri Lanka
---

# 12V power efficiency Water-resistant design 25% more airflow 1749-4 Turbo 4000 Series II in-Line Blower, for 4-Inch Interior Diameter Vent Hose, Water Resistant, 12-Volt

**Brand:** attwood
**Price:** ₨27538
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate your airflow game—quiet, powerful, and built to last!

## Quick Answers

- **What is this?** 1749-4 Turbo 4000 Series II in-Line Blower, for 4-Inch Interior Diameter Vent Hose, Water Resistant, 12-Volt by attwood
- **How much does it cost?** ₨27538 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/263494558-1749-4-turbo-4000-series-ii-in-line-blower-4)

## 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

- • **Flexible Installation:** Built-in mounting feet allow easy vertical or horizontal setup with standard #10 fasteners.
- • **Marine-Grade Durability:** Water-resistant housing and ignition protection built for harsh marine environments and beyond.
- • **Energy-Smart Performance:** Draws up to 40% fewer amps than competitors, maximizing power savings without compromise.
- • **Whisper-Quiet Efficiency:** Matches competitive airflow with significantly reduced noise—stay cool without the buzz.
- • **Turbocharged Ventilation Power:** Patented 5-blade fan delivers up to 25% more airflow for superior engine compartment freshness.

## Overview

The Attwood 1749-4 Turbo 4000 Series II In-Line Blower is a 12-volt, water-resistant ventilation powerhouse designed for 4-inch vent hoses. Featuring a patented 5-blade fan and engineered blade pitch, it delivers up to 25% more airflow with significantly less noise and up to 40% greater energy efficiency than competitors. Marine ignition protected and easy to install vertically or horizontally, it’s ideal for engine compartments, bilges, and other tight spaces requiring reliable, quiet ventilation.

## Description

This Attwood Turbo 4000 Series II In-Line Blower provides outstanding ventilation airflow for areas such as engine compartments, galleys, bilges, and heads. It features a patented, in-line design and the 5-blade fan maximizes airflow and efficiency. The blade sweep and pitch are engineered for a high lift coefficient, which results in increased airflow speed for optimized ventilation. It matches the airflow of competitive in-line blowers with significantly reduced noise output. For added durability, it has an engineered plastic housing that resists deformation during installation, and prevents blade-to-housing interference. No other bilge blowers in the industry provide such powerful system output at such low power input in a compact size. System airflow exceeds older-style in-line blowers by as much as 25 percent. It is also up to four times more efficient than competitive blowers as it draws up to 40 percent fewer amps. This blower is marine ignition protected and has built-in mounting feet that permit easy vertical or horizontal installation. This 12-volt, water-resistant white blower is intended for use with 4-inch interior diameter ventilation hose. It installs with #10 fasteners. 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.

Review: I ordered two of these 4" fans to move air into the cab of my '63 VW van when the vehicle was stationary or not moving fast enough to create adequate air flow. These fans are not silent but they are quieter than the VW original ambulance fans that I was duplicating. They make the equivalent air force as driving about 50 kmh. I was not using hoses so I trimmed the length of the fan housings to fit the air box. The fans are marine rated so a slight amount of moisture entering the vent should not be an issue...12 volt computer fans would not be able to cope with any moisture. These fans work well although I am not using them as intended by the manufacturer.
Review: Purchased to replace failing noisy blower of same model. Works as expected and quiet.

## Features

- 12-volt, water-resistant white blower intended for use with 4-inch interior diameter vent hose; installs with #10 fasteners
- Marine ignition protected and has built-in mounting feet for easy vertical or horizontal installation
- Provides outstanding ventilation airflow for areas such as engine compartments, galleys, bilges, and heads
- Features a patented, in-line design and the 5-blade fan maximizes airflow and efficiency
- The blade sweep and pitch are engineered for a high lift coefficient, resulting in increased airflow speed for optimized ventilation.Matches the airflow of compeive in-line blowers with significantly reduced noise output.For 7/8" I.D. thru-hull.Ideal for livewell drains.Brass snaps and plates.Note: Not for use with chemicals or fuels

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003EX02DA |
| Best Sellers Rank | #25,515 in Sporting Goods ( See Top 100 in Sporting Goods ) #3 in Boat Engine Blowers |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,613) |
| Date First Available | 6 August 2012 |
| Department | unisex-adult |
| Item display length | 1 inches |
| Item display weight | 0.57 Kilograms |
| Item display width | 1 inches |
| Item model number | 1749-4 |
| Manufacturer | Attwood |
| Material type | Other |
| Part number | 1749-4 |
| Power source type | Battery Powered |
| Product Dimensions | 12.5 x 15.5 x 10 cm; 453.59 g |

## Product Details

- **Brand:** attwood
- **Colour:** White
- **Engine type:** 4 Stroke
- **Item weight:** 454 g
- **Material:** Other

## Images

![1749-4 Turbo 4000 Series II in-Line Blower, for 4-Inch Interior Diameter Vent Hose, Water Resistant, 12-Volt - Image 1](https://m.media-amazon.com/images/I/710uYW2NNdL.jpg)

## Available Options

This product comes in different **Pattern** options.

## Questions & Answers

**Q: What's the cfm?**
A: SpecificationsModel No. Rated Voltage CFM Open Flow CFM In System* Current Draw Amps Fuse SizeTurbo 3000 12V nominal 120 90 2.6 4-amp13.6V design 145 100 3.1 4-ampTurbo 4000 12V nominal 200 100 2.5 5-amp13.6V design 230 125 2.9 5-amp24V nominal 200 100 1.5 3-amp27.2V design 230 125 2.0 3-amp

**Q: Can I wire this to a “replacement plug” and plug it into the wall ?**
A: This is a 12 volt unit.   If you plug it in to a 120 or 240  volt system, it wil destroy itself in moments.  You need to search for a unit compatible with the voltage of your home.

**Q: Will this work connected directly to a 12 volt 100 watt solar panel? I already purchased it for that reason. Hoping I don't need a battery.**
A: Late answer, but yes. I wired a pair of these direct to a pair of 100 watt solar panels (separate panels, different areas of acreage) for moving air for chickens and rabbits.  They sound like drones, but the animals are doing well with the 106 degree heat index.

**Q: Has anyone used this to filter air for an rv? for burning man, my thought was to pair this with a spectre air filter and mount through the rv ceiling.**
A: Use common sense,don't choke it and you should be Ok,I use mine to exhaust attic crawlspace, they have been running for 4 years, geo

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***N on 28 June 2019*

I ordered two of these 4" fans to move air into the cab of my '63 VW van when the vehicle was stationary or not moving fast enough to create adequate air flow. These fans are not silent but they are quieter than the VW original ambulance fans that I was duplicating. They make the equivalent air force as driving about 50 kmh. I was not using hoses so I trimmed the length of the fan housings to fit the air box. The fans are marine rated so a slight amount of moisture entering the vent should not be an issue...12 volt computer fans would not be able to cope with any moisture. These fans work well although I am not using them as intended by the manufacturer.

### ⭐⭐⭐⭐⭐ Review
*by M***A on 14 January 2026*

Purchased to replace failing noisy blower of same model. Works as expected and quiet.

### ⭐⭐⭐⭐⭐ Review
*by B***R on 27 August 2021*

Produkt entspricht dem Preis Leistung Verhältnis. Würde ihn weiter empfehlen.

## Frequently Bought Together

- Attwood 1749-4 Turbo 4000 Series II in-Line Blower, for 4-Inch Interior Diameter Vent Hose, Water Resistant, 12-Volt
- Better Boat 4 Inch Marine Blower Hose, 10' PVC Black, Ideal for Bilge, Engine, Galley, Bathroom Exhausts

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-04*