---
product_id: 22895393
title: "Water Pump Impeller 369-65021-1 47-16154-3 18-3098 for Mercury Sierra Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP"
brand: "big-autoparts"
price: "81 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Big Autoparts"
url: https://www.desertcart.ro/products/22895393-water-pump-impeller-369-65021-1-47-16154-3-18
store_origin: RO
region: Romania
---

# 33.58mm external diameter fits OEM specs 6 precision blades for optimal water flow Direct OE replacement, easy install Water Pump Impeller 369-65021-1 47-16154-3 18-3098 for Mercury Sierra Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP

**Brand:** big-autoparts
**Price:** 81 Lei
**Availability:** ✅ In Stock

## Summary

> 🚤 Keep your engine cool and cruising — never miss a wave!

## Quick Answers

- **What is this?** Water Pump Impeller 369-65021-1 47-16154-3 18-3098 for Mercury Sierra Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP by big-autoparts
- **How much does it cost?** 81 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/22895393-water-pump-impeller-369-65021-1-47-16154-3-18)

## 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

- • **Durable CR Material:** Crafted from corrosion-resistant compounds for long-lasting performance.
- • **OEM-Exact Dimensions:** Seamlessly fits Mercury & Tohatsu engines without modification.
- • **Plug & Play Installation:** Simple hand-tool setup gets you back on the water faster.
- • **Precision 6-Blade Design:** Maximize cooling efficiency with engineered blade geometry.
- • **TS16949 Certified Quality:** Meets rigorous automotive standards for reliability and durability.

## Overview

This brand-new water pump impeller features 6 blades with a 33.58mm diameter and 10.25mm shaft insert, engineered as a direct OE replacement for Mercury and Tohatsu 2HP to 6HP outboard motors. Made from corrosion-resistant materials and TS16949 certified, it ensures reliable cooling performance and easy installation, backed by a 2-year warranty.

## Description

Water Pump Impeller Dimensions: Warranty: 2 years No. Blades: 6 Depth /Height/Width :14.22mm Outer /External impeller overall Diameter: 33.78mm Internal shaft insert /Hub Diameter : 10.30mm Net Weight: 7g Material: Impeller(CR), Shaft Sleeve (Nylon) Applications: Mercury/Mariner (4-STROKE) Carb : 2HP ,0R131842 & Up 2.5Hp ,0R131842 & Up 3.5HP ,0R131842 & Up Mercury/Mariner (2-STROKE) 4HP ,0T894439 & Up ,0P401000 & Up 5HP , 0T894439 & Up,0P401000 & Up 4HP ,0G710613 THRU 0T894438,0P017000 THRU 0P400999 5HP, 0P017000 THRU 0P400999,0G710613 THRU 0T894438 Mercury/Mariner 2HP ,0T884302 THRU 0T894576 Mercury/Mariner 3.3HP, 2.5HP,0G710613 THRU 0T894576 Mercury/Mariner 3.3HP, 2.5HP,0P017000 THRU 0P400999 Mercury/Mariner 6HP ,5HP , 4HP,(4-STROKE),0R000001 THRU 0R067089,0P073456 THRU 0P400999 Mercury/Mariner 2HP,2.5HP,3.3HP,0T894577 & Up Mercury/Mariner 2.5HP,3.3HP ,0P401000 & Up Mercury/Mariner 6 5 4(4-STROKE),0R067090 & Up,0P401000 & Up Package Included: Outboard Water Pump Impeller *1pcs To ensure this impeller is suitable for your engine. Please feel free to ask us any questions. We promise to answer you in 24 hours.Please check the size carefully before you order.

Review: works as intended on my 2004 Mercury 6HP 4 stroke outboard - works great! bought an extra my 2004 Mercury 6HP 4 stroke outboard
Review: Looks like OEM part - Excellent Impeller for the money. Consider buying an Impeller Kit if you haven’t changed the gaskets in a few years.

## Features

- Water motor impeller have 6 blades.Height:14.30mm,External Impeller Overall Diameter:33.58mm,Internal Shaft Insert Diameter:10.25mm.
- This aftermarket impeller replaces Mercury outboard motor part #47-16154-3,Tohatsu outboard motor part 369-65021-1, impeller 18-3098.
- Water pump impeller are 100% brand new and don't used or rebuilt.
- Similar in design to stock OEM units and require only simple hand tools for installation.Direct replacement,OE level quality and durability.
- Water pump impeller 100% compatible with OE parts and passed TS16949 certified.Fits for Mercury/Mariner (4-STROKE) Carb 2HP 2.5HP 3HP,Mercury/Mariner (2-STROKE) 4HP 5HP,6HP.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0118YZWLS |
| Best Sellers Rank | #228,299 in Automotive ( See Top 100 in Automotive ) #542 in Automotive Replacement Engine Water Pumps |
| Brand | big-autoparts |
| Customer Reviews | 4.5 4.5 out of 5 stars (384) |
| Date First Available | July 9, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.317 ounces |
| Item model number | 47-16154-3 369-65021-1 18-3098 |
| Manufacturer | Big-Autoparts |
| Manufacturer Part Number | 47-16154-3 369-65021-1 18-3098 |
| Model | Water Pump Impeller for Mercury Sierra Tohatsu |
| OEM Part Number | 47-16154-3 369-65021-1 18-3098 |
| Package Dimensions | 4.21 x 2.28 x 0.91 inches |

## Product Details

- **Automotive Fit Type:** Vehicle Specific Fit
- **Brand:** big-autoparts
- **Manufacturer:** Big-Autoparts
- **Material:** premium nylon
- **OEM Part Number:** 47-16154-3 369-65021-1 18-3098
- **Vehicle Service Type:** Boat

## Images

![Water Pump Impeller 369-65021-1 47-16154-3 18-3098 for Mercury Sierra Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP - Image 1](https://m.media-amazon.com/images/I/519qaoXTTaL.jpg)
![Water Pump Impeller 369-65021-1 47-16154-3 18-3098 for Mercury Sierra Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP - Image 2](https://m.media-amazon.com/images/I/51Re9dEIhbL.jpg)
![Water Pump Impeller 369-65021-1 47-16154-3 18-3098 for Mercury Sierra Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP - Image 3](https://m.media-amazon.com/images/I/61ZfG9IPUrL.jpg)

## Available Options

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

## Questions & Answers

**Q: I need a impeller to fit 2015 colman 5hp**
A: It worked on a 2-horse Nissan and a 6-horse Tohatsu for me. Tohatsu made both engines. I don't know who manufactured the Colman.

**Q: will this fit a 1956 Johnson 7 1/2hp outboard motor ?**
A: Probably not, this fits smaller Mercury and Tohatsu engines......you need to get ghe serial number off your engine, go to Marine Engine site, plug in the number and it will give you the correct part number.

**Q: did this product come with the o ring?**
A: No.  Just the impeller.  It is a real Westerbeke part, good quality.  Lasts about 400 hours in Onan 11.5KW marine generator.  At 500 hours, need to go fishing for missing vanes in the heat exchanger.

**Q: Need help finding a 1978 evinrude 115 exhaust manifold gasket**
A: Try Sea Way marine

## Customer Reviews

### ⭐⭐⭐⭐⭐ works as intended on my 2004 Mercury 6HP 4 stroke outboard
*by P***S on July 17, 2025*

works great! bought an extra my 2004 Mercury 6HP 4 stroke outboard

### ⭐⭐⭐⭐⭐ Looks like OEM part
*by M***C on May 24, 2025*

Excellent Impeller for the money. Consider buying an Impeller Kit if you haven’t changed the gaskets in a few years.

### ⭐⭐⭐⭐⭐ It fits my 2 hp Nissant
*by K***R on November 15, 2021*

It was a very good price and it fit my engine. Now if I can get the engine back together I will be able to tell how well it works. The difficulty in reassembly has nothing to do with the impeller.

## Frequently Bought Together

- big-autoparts Water Pump Impeller 369-65021-1 47-16154-3 18-3098 for Mercury Sierra Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP
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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-01*