---
product_id: 326482729
title: "DEF 63D-W0078-01 Water Pump Impeller Repair Kit for Yamaha 40HP 50HP 60HP 40 50 60 HP Outboard Replace Sierra 18-3434"
brand: "def"
price: "¥6835"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/326482729-def-63d-w0078-01-water-pump-impeller-repair-kit-yamaha
store_origin: JP
region: Japan
---

# Compatible with Yamaha 40-60HP Precision OEM fit Complete repair kit DEF 63D-W0078-01 Water Pump Impeller Repair Kit for Yamaha 40HP 50HP 60HP 40 50 60 HP Outboard Replace Sierra 18-3434

**Brand:** def
**Price:** ¥6835
**Availability:** ✅ In Stock

## Summary

> 🚤 Keep your Yamaha running smooth—don’t let a worn impeller slow your adventure!

## Quick Answers

- **What is this?** DEF 63D-W0078-01 Water Pump Impeller Repair Kit for Yamaha 40HP 50HP 60HP 40 50 60 HP Outboard Replace Sierra 18-3434 by def
- **How much does it cost?** ¥6835 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/326482729-def-63d-w0078-01-water-pump-impeller-repair-kit-yamaha)

## Best For

- def enthusiasts

## Why This Product

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

## Key Features

- • **Easy Installation:** Designed for hassle-free replacement to get your outboard motor back on the water fast.
- • **Trusted Replacement:** Direct substitute for multiple OEM part numbers including 63D-W0078-01 and Sierra 18-3434—no guesswork.
- • **OEM-Grade Compatibility:** Seamlessly fits Yamaha 2-Stroke & 4-Stroke 40-60HP models (1995-2009) for guaranteed performance.
- • **All-Inclusive Repair Kit:** Includes neoprene impeller, wear plate, gasket, bolts, seals & more—everything you need in one box.
- • **Durability Meets Precision:** Crafted with high-quality materials ensuring long-lasting water pump efficiency and engine protection.

## Overview

The DEF 63D-W0078-01 Water Pump Impeller Repair Kit is a comprehensive, OEM-compatible solution designed for Yamaha 40-60HP 2-Stroke and 4-Stroke outboard engines (1995-2009). This kit includes all essential components—neoprene impeller, wear plate, gasket, seals, and hardware—ensuring reliable water pump performance and engine cooling. Lightweight and easy to install, it replaces multiple OEM part numbers, making it the go-to choice for professional-grade marine maintenance.

## Description

DEF 63D-W0078-01 Water Pump Impeller Repair Kit for Yamaha 40HP 50HP 60HP 40 50 60 HP Outboard Replace Sierra 18-3434

## Features

- FITS: for Yamaha 2-Stroke 40 hp 1995-2005, 50 hp 1998-2009.
- FITS: for Yamaha 4-Stroke 40 hp 1998, 50 hp 1995-2009, 60 hp 2002-2009.
- REPLACES: 63D-W0078-01, 63DW007801, 63D W0078 01, 63D-W0078-00, 63DW007800, 63D W0078 00, 63D-W0078-00-00, 63DW00780000, 63D W0078 00 00, 63D-W0078-01-00, 63DW00780100, 63D W0078 01 00, 18-3434, 183434, 18 3434.
- INCLUDES: Neoprene Impeller, Wear Plate, Insert Cup, Water Pump Gasket, Install Bolts, Key, Water Seal, "O"- Ring.
- ENSURE: If there is any problem with the product, please do not hesitate to contact us, we will help you solve the problem.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | DEF |
| Brand | DEF |
| Package Dimensions | 16.51 x 13.59 x 5.11 cm; 249 g |
| Item model number | W0078 1 |
| Manufacturer Part Number | BOAT Water Pump 05 |
| Item Weight | 249 g |

## Product Details

- **Brand:** DEF
- **Material:** Neoprene (Impeller only)
- **Item weight:** 0.25 Kilograms
- **Vehicle service type:** Boat
- **Weight class:** Heavy Weight

## Images

![DEF 63D-W0078-01 Water Pump Impeller Repair Kit for Yamaha 40HP 50HP 60HP 40 50 60 HP Outboard Replace Sierra 18-3434 - Image 1](https://m.media-amazon.com/images/I/615PcpuTtsL.jpg)

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**Shop now:** [https://www.desertcart.jp/products/326482729-def-63d-w0078-01-water-pump-impeller-repair-kit-yamaha](https://www.desertcart.jp/products/326482729-def-63d-w0078-01-water-pump-impeller-repair-kit-yamaha)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-08*