---
product_id: 528814186
title: "TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8\"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors"
brand: "tongass"
price: "₨780"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/528814186-tongas-24-pack-blue-and-black-lower-unit-drain-screw
store_origin: SC
region: Seychelles
---

# Oil-resistant, watertight fiberboard seal 24-pack for multiple maintenance cycles Exact OEM fit for Yamaha models TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors

**Brand:** tongass
**Price:** ₨780
**Availability:** ✅ In Stock

## Summary

> ⚓ Seal your engine’s future with confidence — never let a leak slow your adventure!

## Quick Answers

- **What is this?** TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors by tongass
- **How much does it cost?** ₨780 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/528814186-tongas-24-pack-blue-and-black-lower-unit-drain-screw)

## Best For

- tongass enthusiasts

## Why This Product

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

## Key Features

- • **Wide Yamaha Model Coverage:** Compatible with Yamaha 4-stroke outboards including 150HP F150LCA (2019) & 175HP F175XCA (2020) for versatile use.
- • **Durable Japanese Fiberboard:** High-strength, oil-resistant material guarantees leak-proof, long-lasting seals under marine conditions.
- • **Precision OEM Compatibility:** Direct replacement for Yamaha 90430-08020-00 & 90430-08003-00 ensures flawless fit and function.
- • **Bulk Pack for Pro Maintenance:** 24 gaskets per pack means you’re always ready for seasonal oil changes without last-minute runs.
- • **Aftermarket Quality You Can Trust:** Engineered to meet or exceed OEM standards, delivering premium performance without the premium price.

## Overview

TonGas 24-pack lower unit drain screw gaskets are exact aftermarket replacements for Yamaha part numbers 90430-08020-00 and 90430-08003-00. Crafted from durable, oil-resistant Japanese fiberboard, these gaskets provide a watertight seal essential for preventing leaks during lower unit oil changes. Compatible with a wide range of Yamaha 4-stroke outboard motors, including recent 150HP and 175HP models, this bulk pack ensures you’re always prepared for maintenance, delivering OEM-level quality and reliability at a great value.

## Description

TONGASS EXACT REPLACEMENT FOR YAMAHA 90430-08020-00 & 90430-08003-00 - These gaskets are an exact replacement for Yamaha part number 90430-08020-00. Alternative part numbers include 90430-08003-00, 90430-08003, 90430-08801-00, and 604-45342-00-00 (superseded by 90430-08003-00). These part numbers have the same specifications and make, having a 5/16 inch (8mm) interior diameter. LOWER GEARCASE OIL DRAIN GASKETS - Sometimes changing lower unit oil several times per season also means changing gaskets - or losing them. Don’t let leaks stop you. Always have several lower unit gaskets on hand. Our 24-pack lower gear case oil drain plug gaskets will have your back. JAPANESE HARD FIBERBOARD GASKETS - Made from hard and watertight materials, these black fiber gaskets are hard yet lightweight. They are durable and compresses at the same rate as OEM gaskets, creating the perfect seal. Similar to other fiber gaskets, these gaskets are also resistant to oils, preventing oil leaks that will eventually cause the entry of water. FITS FOR YAMAHA 4-STROKE OUTBOARD MOTORS - These gaskets are almost universally compatible with Yamaha’s 4-stroke outboard motor models, but they’re also compatible with several older models and other parts of the motor. Compatible with Yamaha models include Outboard 150HP F150LCA 2019 and Outboard 175HP F175XCA 2020. RELIABLE AFTERMARKET REPLACEMENT PARTS BY TONGASS - Our line of aftermarket replacement parts meets and even exceeds OEM specifications for quality and durability. You can count on our reliable aftermarket replacement lower unit gaskets to provide an excellent seal for longer.

## Features

- Exact Replacement for Yamaha Drain Screw Gaskets – Designed as a direct replacement for Yamaha part numbers 90430-08020-00 & 90430-08003-00, with compatibility across multiple models. Features a 5/16-inch (8mm) inner diameter.
- Lower Gearcase Oil Drain Plug Gaskets – Prevent leaks and ensure a secure seal when changing lower unit oil. This 24-pack of outboard motor drain gaskets is essential for maintenance and long-term engine protection.
- Durable Japanese Hard Fiberboard Gaskets – Made from high-strength, oil-resistant fiber material, these black gaskets provide a watertight seal, matching OEM compression rates for reliable performance in marine environments.
- Compatible with Yamaha 4-Stroke Outboard Motors – Designed for Yamaha outboard models, including Outboard 150HP F150LCA (2019) and Outboard 175HP F175XCA (2020), as well as various older models.
- High-Quality Aftermarket Marine Parts – Engineered to meet or exceed OEM standards, these lower unit oil drain gaskets offer superior durability and sealing, ensuring long-lasting protection for your outboard motor. PLEASE NOTE: This is an aftermarket part produced by TonGass meeting OEM quality (based on in-house testing). We have no affiliation with or endorsement from any of the manufacturers mentioned

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TonGass |
| Part number | sealgasket2020 |
| Item Weight | 5 g |
| Package Dimensions | 6.81 x 4.09 x 0.74 cm; 5 g |
| Item model number | 24pk-Black&Blue |
| Colour | Multicolored |
| Material | Fiberboard |
| Shape | Round |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** TonGass
- **Material:** Fiberboard
- **Colour:** Multicolored
- **Shape:** Round
- **Manufacturer:** TonGass

## Images

![TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors - Image 1](https://m.media-amazon.com/images/I/71I4RIupEkL.jpg)
![TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors - Image 2](https://m.media-amazon.com/images/I/71ZlodTfx8L.jpg)
![TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors - Image 3](https://m.media-amazon.com/images/I/71iolrHMK9L.jpg)
![TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors - Image 4](https://m.media-amazon.com/images/I/712BZihFIcL.jpg)
![TonGas (24-Pack, Blue & Black) Lower Unit Drain Screw Gaskets Replacement for Yamaha 90430-08020-00 & 90430-08003-00, Mercury Marine 3/8"-16 Drain Fill Screw, Gear Case Oil Seal for Outboard Motors - Image 5](https://m.media-amazon.com/images/I/71KktPajQ-L.jpg)

## Available Options

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

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-09*