---
product_id: 253478594
title: "Water Pump Impeller, Outboard Motor Boat Impeller for Mercury 4HP 4.5HP 7.5HP 9.8HP Cylinder 47-89981 12270 18-3239"
brand: "big-autoparts"
price: "28038CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/253478594-water-pump-impeller-outboard-motor-boat-impeller-for-mercury-4hp
store_origin: SN
region: Senegal
---

# Fits Mercury 4-9.8HP motors Precision 32mm diameter Easy install, hassle-free Water Pump Impeller, Outboard Motor Boat Impeller for Mercury 4HP 4.5HP 7.5HP 9.8HP Cylinder 47-89981 12270 18-3239

**Brand:** big-autoparts
**Price:** 28038CFA
**Availability:** ✅ In Stock

## Summary

> 🚤 Upgrade your boat’s heartbeat with precision and ease!

## Quick Answers

- **What is this?** Water Pump Impeller, Outboard Motor Boat Impeller for Mercury 4HP 4.5HP 7.5HP 9.8HP Cylinder 47-89981 12270 18-3239 by big-autoparts
- **How much does it cost?** 28038CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/253478594-water-pump-impeller-outboard-motor-boat-impeller-for-mercury-4hp)

## 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

- • **Trusted OEM Quality:** Meets original equipment standards for peace of mind and peak motor efficiency.
- • **Lightweight & Compact:** At just 20g, it won’t weigh down your engine or complicate maintenance.
- • **Effortless Installation:** Designed for quick, no-fuss replacement to get you back on the water faster.
- • **Precision Engineered Fit:** Exact 32mm diameter ensures seamless compatibility with Mercury outboards from 1966-1978.
- • **Durable & Stable Performance:** Built to withstand marine conditions, delivering reliable cooling for your motor.

## Overview

The Big-Autoparts Water Pump Impeller is a durable, precision-fit replacement part designed for Mercury outboard motors ranging from 4HP to 9.8HP (1966-1978). With a 32mm external diameter and lightweight 20g design, it ensures stable motor cooling and easy installation, meeting OEM quality standards for reliable marine performance.

## Description

Water Pump Impeller, Outboard Motor Boat Impeller for Mercury 4HP 4.5HP 7.5HP 9.8HP Cylinder 47-89981 12270 18-3239

## Features

- Durable, stable and convenient; easy to install
- Fits Mercury 4.5HP 7.5HP 9.8HP 1966-1978.
- External overall diameter: 32.00 mm, depth :14.48 mm, hub diameter : 11.61 mm
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Big-Autoparts |
| Brand | big-autoparts |
| Model | Water Pump Impeller 4 HP 4.5 HP 7.5 HP 9.8 HP for Mercury Outboard Motor |
| Package Dimensions | 10.59 x 5.79 x 2.31 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 |
| Item Weight | 20 g |

## Product Details

- **Brand:** big-autoparts
- **Material:** neoprene,brass
- **Item weight:** 20 Grams
- **Vehicle service type:** Boat
- **Weight class:** Heavy Weight
- **Manufacturer:** Big-Autoparts
- **OEM part number:** 47-89981 12270 18-3239
- **Automotive Fit Type:** Vehicle Specific Fit
- **UPC:** 711639830462

## Images

![Water Pump Impeller, Outboard Motor Boat Impeller for Mercury 4HP 4.5HP 7.5HP 9.8HP Cylinder 47-89981 12270 18-3239 - Image 1](https://m.media-amazon.com/images/I/51ltq4Ayi-L.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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**Shop now:** [https://www.desertcart.sn/products/253478594-water-pump-impeller-outboard-motor-boat-impeller-for-mercury-4hp](https://www.desertcart.sn/products/253478594-water-pump-impeller-outboard-motor-boat-impeller-for-mercury-4hp)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-03*