---
product_id: 134865239
title: "GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar..."
brand: "ghmarine"
price: "$62.58"
currency: USD
in_stock: true
reviews_count: 13
category: "G Hmarine"
url: https://www.desertcart.us/products/134865239-ghmarine-70941a3-water-pump-impeller-kit-for-mercury-outboar
store_origin: US
region: United States of America
---

# Complete repair kit included Fits Mercury 4-9.8 HP engines Precision metal impeller GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar...

**Brand:** ghmarine
**Price:** $62.58
**Availability:** ✅ In Stock

## Summary

> 🚤 Keep your boat’s heart pumping strong—don’t let downtime sink your summer!

## Quick Answers

- **What is this?** GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar... by ghmarine
- **How much does it cost?** $62.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/134865239-ghmarine-70941a3-water-pump-impeller-kit-for-mercury-outboar)

## Best For

- ghmarine enthusiasts

## Why This Product

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

## Key Features

- • **All-in-One Repair Solution:** Includes impeller, plate, seal, cover assembly, housing, and key—everything you need to restore your water pump in one kit.
- • **Durable Metal Construction:** Built with high-quality metal components for long-lasting reliability and resistance to marine wear and tear.
- • **Engineered for Mercury Power:** Direct replacement for Mercury Marine 4-9.8 HP outboards, ensuring seamless compatibility and peak performance.
- • **Optimized Cooling Efficiency:** Precision impeller design maximizes water flow to keep your engine running cool and prevent overheating on every adventure.
- • **Trusted by Boaters Worldwide:** Highly rated with 4.3 stars from 124 reviews, making it a go-to choice for professional and recreational boaters alike.

## Overview

The GHmarine 70941A3 Water Pump Impeller Kit is a comprehensive, metal-constructed repair kit designed specifically for Mercury Marine 4-9.8 HP outboard engines from 1975-1986. It includes all necessary components to restore optimal water pump function, ensuring efficient engine cooling and reliable performance on the water. Highly rated and trusted, this kit is a must-have for maintaining your boat’s power and longevity.

## Description

Buy GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboard 4-9.8 HP | Compatible with Marine 2-Stroke 4 4.5 7.5 9.8 HP Boat Engines, 0.456 " I.D Impeller, Replaces 46-70941A3, Sierra 18-3446: Water Pumps - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Direct replacement for mercury 4hp - Worked great on my mercury two stroke4hp.
Review: Works like a champ! - Fit my 1977 Mercury 110 nicely and works great. Such a squirter now 💦💦 Some instructions and or a cut sheet would've been helpful though.

## Features

- This Water Pump Impeller Repair Kit is for Mercury for Mariner Force Outboard Models
- Fits for Mercury Marine 4hp 4.5hp 7.5hp 9.8hp 1975-1986 Boat Engines
- Replaces for Mercury Marine 46-70941A3, Sierra 18-3446
- Packge Contains: Water Pump Impeller, Impeller Plate, Seal Water Pump Cover, Cover Assembly, Housing Assembly, Key
- If you're not sure if it's the right model for you, please contact me, I will give you the most accurate advice

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Q86CX47 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #67,742 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #3,514 in Boating Equipment |
| Brand | GHmarine |
| Brand Name | GHmarine |
| Compatible with Vehicle Type | Boat |
| Customer Reviews | 4.3 out of 5 stars 124 Reviews |
| Global Trade Identification Number | 00636946579227 |
| Included Components | Cover Assembly, Housing Assembly, Impeller, Impeller Plate, Key, Seal Water Pump Cover |
| Item Type Name | Water Pump Impeller Kit |
| Item Weight | 104 g |
| Manufacturer | GHmarine |
| Manufacturer Part Number | 46-70941A3 |
| Manufacturer Warranty Description | 30 Days |
| Material | Metal |
| Material Type | Metal |
| Model Number | 46-70941A3 46-46893A6 18-3446 |
| Number of Packs | 1 |
| OEM Equivalent Part Number | 12122, 18-3446, 46-46893A6, 46-70941A3 |
| UPC | 636946579227 |
| Unit Count | 1 Count |
| Vehicle Service Type | Boat |
| Weight Class | light |

## Product Details

- **Automotive Fit Type:** Vehicle Specific Fit
- **Brand:** GHmarine
- **Global Trade Identification Number:** 00636946579227
- **Item Weight:** 104 Grams
- **Manufacturer:** GHMARINE
- **Material:** Metal
- **OEM Part Number:** 12122, 18-3446, 46-46893A6, 46-70941A3
- **UPC:** 636946579227
- **Vehicle Service Type:** Boat
- **Weight Class:** light

## Images

![GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar... - Image 1](https://m.media-amazon.com/images/I/611de0iLyJL.jpg)
![GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar... - Image 2](https://m.media-amazon.com/images/I/61EUgI3Uq-L.jpg)
![GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar... - Image 3](https://m.media-amazon.com/images/I/61P9HHntQNL.jpg)
![GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar... - Image 4](https://m.media-amazon.com/images/I/61pR-BtU-OL.jpg)
![GHmarine 70941A3 Water Pump Impeller Kit for Mercury Outboar... - Image 5](https://m.media-amazon.com/images/I/51c+xBMs5AL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Direct replacement for mercury 4hp
*by T***N on December 14, 2025*

Worked great on my mercury two stroke4hp.

### ⭐⭐⭐⭐⭐ Works like a champ!
*by P***. on September 10, 2024*

Fit my 1977 Mercury 110 nicely and works great. Such a squirter now 💦💦 Some instructions and or a cut sheet would've been helpful though.

### ⭐ This is not a drop in for 46-70941A3
*by I***E on June 6, 2024*

I bought this kit to replace the waterpump on my 1985 Mercury 7.5. The waterpump kit is listed as 46-70941A3, so when I cross referenced this kit, I bought it. The kit comes with the top oil seal, which is less important because it is over the waterpump, and in theory shouldnt interact with the oil/water barrier. The important seal is the waterpump base seal that actually stops water from getting into the oil and vise versa. This does not come with the kit. When I realized it didn't, I looked up the parts for this. Marineengine lists two possible seals for this location. Luckily, we have a marine supply store locally that stocks these. I went in and bought both(authentic mercury parts). You are supposed to use a mandrel to press the oil seal into the base, but the dimensions are wrong and neither of the OEM parts work with this base. You can see in the photo the old waterpump base with seal inserted. The 2 new seals and new waterpump base are on the right, and they do not fit. The waterpump base is completely useless without the lower oil seal(unless you like water in your gear oil) so I'm not able to use it at all. Thankfully, my original base is still in somewhat working order. I will have to reuse it, but it makes the purchase of the waterpump basically a throwaway. I would encourage folks doing this repair to not make the mistake I made. Please don't be lured by the cheaper off brand, and purchase an OEM part.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-01*