---
product_id: 395226432
title: "big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239"
brand: "big-autoparts"
price: "A$83"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/395226432-big-autoparts-new-sea-water-pump-rubber-impeller-for-mercury
store_origin: AU
region: Australia
---

# Durable & Stable Precise Dimensions Easy Installation big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239

**Brand:** big-autoparts
**Price:** A$83
**Availability:** ✅ In Stock

## Summary

> 🚤 Keep Your Boat Running Smoothly!

## Quick Answers

- **What is this?** big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239 by big-autoparts
- **How much does it cost?** A$83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/395226432-big-autoparts-new-sea-water-pump-rubber-impeller-for-mercury)

## Best For

- big-autoparts enthusiasts

## Why This Product

- Trusted big-autoparts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust Material:** Constructed from high-quality rubber for long-lasting durability.
- • **Lightweight Design:** Weighs only 20 grams for effortless handling.
- • **Unmatched Compatibility:** Perfectly replaces Mercury outboard motors 47-89981/12270/18-3239.
- • **Engineered for Performance:** Designed for Mercury 4.5HP, 7.5HP, and 9.8HP models (1966-1978).
- • **User-Friendly Installation:** Get back on the water quickly with easy installation.

## Overview

The big-autoparts New Sea Water Pump Rubber Impeller is a high-quality replacement part designed specifically for Mercury outboard motors ranging from 4.5HP to 9.8HP, ensuring optimal performance and reliability. With precise dimensions and a lightweight design, this impeller is easy to install and built to last, making it an essential component for any boating enthusiast.

## Description

big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239

## Features

- Boat engine impeller replaces Mercury outboard motors 47-89981/ 12270/ 18-3239.Original part for references only.
- Water pump impeller are durable, stable and convenient; easy to install.
- Water pump impeller fits Mercury 4.5HP 7.5HP 9.8HP 1966-1978.
- Boat impeller external overall diameter: 32.00 mm, depth :14.48 mm, hub diameter : 11.61 mm.
- Water pump impeller are 100% brand new,please refer to the description to make sure it’s compatible with your original one.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | big-autoparts |
| Material | Rubber |
| Item Weight | 20 Grams |
| Vehicle Service Type | Boat |
| Manufacturer | Big-Autoparts |
| UPC | 711639830462 |
| Model | Water Pump Impeller 4 HP 4.5 HP 7.5 HP 9.8 HP for Mercury Outboard Motor |
| Package Dimensions | 13.31 x 11.91 x 4.09 cm; 20 g |
| Item model number | 47-89981 12270 18-3239 |
| Manufacturer Part Number | 47-89981 12270 18-3239 |
| OEM Part Number | 47-89981 12270 18-3239 |
| Inner Material | neoprene,brass |
| Size | 4 HP 4.5 HP 7.5 HP 9.8 HP |
| Colour | black |
| Country of Origin | USA |
| Item Weight | 20 g |

## Product Details

- **Brand:** big-autoparts
- **Material:** neoprene,brass
- **Item Weight:** 20 Grams
- **Vehicle Service Type:** Boat
- **Weight Class:** Lightweight
- **Manufacturer:** Big-Autoparts
- **OEM Part Number:** 47-89981 12270 18-3239
- **UPC:** 711639830462

## Images

![big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239 - Image 1](https://m.media-amazon.com/images/I/51ltq4Ayi-L.jpg)
![big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239 - Image 2](https://m.media-amazon.com/images/I/619sy4iZlGL.jpg)
![big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239 - Image 3](https://m.media-amazon.com/images/I/51gX-NxKzGL.jpg)
![big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239 - Image 4](https://m.media-amazon.com/images/I/61KaQjYTVLL.jpg)
![big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239 - Image 5](https://m.media-amazon.com/images/I/51gy30rrQKL.jpg)

## Questions & Answers

**Q: Will this fit a 1976 7.5hp murcury?**
A: I purchased this for a '78 4.5 h.p. Merc and it works. I believe the 7.5 Merc is the same part according to the manufacturer of this item but best google the parts list and go from there.

**Q: Will this fit my 2013 mercury 8hp fourStroke?**
A: I went to a Mercury Marine website and found a parts list by motor serial number. Had schematics as well. Very helpful.

**Q: Will this fit a 1975 ted williams 5.5hp? If not, can anyone share some knowledge?**
A: Ted Williams endorsed Sears outdoor gear.

**Q: Will this fit a 1984  9.8HP Mercury 110 motor?**
A: Start here. www.perfprotech.com/mercury-marine-parts-catalog/search?serial=A959159

## Frequently Bought Together

- big-autoparts New Sea Water Pump Rubber Impeller for Mercury 4.5-7.5-9.8HP 47-89981 12270 18-3239
- Mercury Carburetor Complete Kit 9.8 Hp 1972-85 18-7007 OEM# 1399-5135

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-20*