---
product_id: 242713097
title: "REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338"
brand: "replacementkits.com"
price: "¥3782"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/242713097-replacementkits-com-brand-gear-box-seal-kit-2pc-fits-some
store_origin: JP
region: Japan
---

# 100% satisfaction 2pc kit American made REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338

**Brand:** replacementkits.com
**Price:** ¥3782
**Availability:** ✅ In Stock

## Summary

> 🔩 Upgrade Your Mower Game!

## Quick Answers

- **What is this?** REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338 by replacementkits.com
- **How much does it cost?** ¥3782 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/242713097-replacementkits-com-brand-gear-box-seal-kit-2pc-fits-some)

## Best For

- replacementkits.com enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Engineered to replace 921-0388 & 721-0338 seamlessly.
- • **Quality Assurance:** Crafted by an American-owned company for top-notch reliability.
- • **Aftermarket Excellence:** High-quality aftermarket parts that outperform the competition.
- • **Guaranteed Satisfaction:** 100% satisfaction guarantee ensures peace of mind.
- • **Versatile Compatibility:** Fits select MTD & Yard Machines riding mowers for broad usability.

## Overview

The REPLACEMENTKITS.COM Gear Box Seal Kit includes two precision-engineered seals designed to replace 921-0388 & 721-0338, ensuring compatibility with select MTD & Yard Machines riding mowers. Proudly made in America, this kit promises quality and reliability, backed by a 100% satisfaction guarantee.

## Description

Full description not available

## Features

- Replaces 921-0388 & 721-0338 found in 918-04566B Transmissions
- Fits Some MTD & Yard Machines Riding Mowers See Below for fitment
- American owned company with the highest quality aftermarket parts.
- 100% Satisfaction Guaranteed

## Product Details

- **Brand:** REPLACEMENTKITS.COM
- **UPC:** 850016595188
- **Manufacturer:** REPLACEMENTKITS.COM

## Images

![REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338 - Image 1](https://m.media-amazon.com/images/I/71KmhYmLLDL.jpg)
![REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338 - Image 2](https://m.media-amazon.com/images/I/71ixfsN2DsL.jpg)
![REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338 - Image 3](https://m.media-amazon.com/images/I/71GoUyNhdOL.jpg)
![REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338 - Image 4](https://m.media-amazon.com/images/I/71UNa61qMXL.jpg)
![REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338 - Image 5](https://m.media-amazon.com/images/I/71wPcdy7QNL.jpg)

## Frequently Bought Together

- REPLACEMENTKITS.COM Brand Gear Box Seal Kit (2pc) Fits Some MTD & Yard Machines Riding Mowers Replaces 921-0388 & 721-0338
- Huthbrother 1-7/8" OD 917-04861 20T Worm Gear, Compatible with Craftsman Cub Cadet Troy Bilt 717-0528 717-04449 717-0528A 917-0528A, Fits 40" - 42" SNOWBLOWERS
- CUB CADET 721-0327 Oil Seal .75 X 1.131 X .188 40 42 inch TDE SWE SW STE 926TE

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**Shop now:** [https://www.desertcart.jp/products/242713097-replacementkits-com-brand-gear-box-seal-kit-2pc-fits-some](https://www.desertcart.jp/products/242713097-replacementkits-com-brand-gear-box-seal-kit-2pc-fits-some)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-08*