---
product_id: 119085574
title: "GLM Lower Unit Gearcase Seal Kit for Mercury 4, 4.5, 7.5, 9.8 Hp Replaces 18-2628, 26-77066A1 Read Product Description for Exact Applications"
brand: "glm"
price: "¥13191"
currency: JPY
in_stock: true
category: "Sporting Goods"
url: https://www.desertcart.jp/products/119085574-glm-lower-unit-gearcase-seal-kit-for-mercury-4-4
store_origin: JP
region: Japan
---

# GLM Lower Unit Gearcase Seal Kit for Mercury 4, 4.5, 7.5, 9.8 Hp Replaces 18-2628, 26-77066A1 Read Product Description for Exact Applications

**Brand:** glm
**Price:** ¥13191
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** GLM Lower Unit Gearcase Seal Kit for Mercury 4, 4.5, 7.5, 9.8 Hp Replaces 18-2628, 26-77066A1 Read Product Description for Exact Applications by glm
- **How much does it cost?** ¥13191 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/119085574-glm-lower-unit-gearcase-seal-kit-for-mercury-4-4)

## Best For

- glm enthusiasts

## Why This Product

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

## Description

GLM Part Number 87574 Lower Unit Gear Housing Seal Kit for Mercury & Mariner 4 Hp (1 Cylinder) (Serial Number 5589202 & Up) 1980 - 1986 4.5 Hp (1 Cylinder) (Serial Number 4107220 & Up) 1975 - 1985 7.5 Hp (Serial Number 4851693 & Up) 1978 - 1986 9.8 Hp (Serial Number 4839254 & Up) 1978 - 1985 Replaces Merc Part Number: 26-77066A1 Replaces Sierra Part Number: 18-2628 Included in Kit: Prop Shaft Seal (Replaces Merc Part #: 26-66022), Shift Shaft Seal (Replaces Merc Part #: 26-30696), Water Pump Base Seal (Replaces Merc Part #: 26-30900), Water Pump Base Seal (Replaces Merc Part #: 26-96063), Nylon Bushing (Replaces Merc Part #: 23-86214), O-Ring (Replaces Merc Part #: 25-62704), O-Ring (Replaces Merc Part #: 25-38933), O-Ring (Replaces Merc Part #: 25-29439), O-Ring (Replaces Merc Part #: 25-48171), O-Ring (Replaces Merc Part #: 25-30529), O-Ring (Replaces Merc Part #: 25-26802), Fill Screw Washer (Replaces Merc Part #: 12-20260), Fill Screw Washer (Replaces Merc Part #: 12-20262)

## Features

- GLM Part Number: 87574
- Replaces Merc: 26-77066A1, Replaces Sierra: 18-2628
- 4 Hp 1980 - 1986 & 4.5 Hp 1975 - 1985
- 7.5 Hp 1978 - 1986 & 9.8 Hp 1978 - 1985

## Images

![GLM Lower Unit Gearcase Seal Kit for Mercury 4, 4.5, 7.5, 9.8 Hp Replaces 18-2628, 26-77066A1 Read Product Description for Exact Applications - Image 1](https://images-na.ssl-images-amazon.com/images/I/71Zprd46s2L.jpg)

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**Shop now:** [https://www.desertcart.jp/products/119085574-glm-lower-unit-gearcase-seal-kit-for-mercury-4-4](https://www.desertcart.jp/products/119085574-glm-lower-unit-gearcase-seal-kit-for-mercury-4-4)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-06*