---
product_id: 207252035
title: "New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check"
brand: "mercury"
price: "242.58 DT"
currency: TND
in_stock: true
reviews_count: 2
url: https://www.desertcart.tn/products/207252035-new-mercury-mercruiser-quicksilver-oem-part-21-30430a-8-valve
store_origin: TN
region: Tunisia
---

# Optimized fluid flow control Genuine OEM precision Compact 2x2x2 inch design New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check

**Brand:** mercury
**Price:** 242.58 DT
**Availability:** ✅ In Stock

## Summary

> ⚙️ Keep your engine flowing flawlessly with Mercury’s precision valve kit!

## Quick Answers

- **What is this?** New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check by mercury
- **How much does it cost?** 242.58 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/207252035-new-mercury-mercruiser-quicksilver-oem-part-21-30430a-8-valve)

## Best For

- mercury enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Small 2x2x2 inch footprint fits effortlessly into your engine system.
- • **Durable Build Quality:** Crafted to last, ensuring long-term operational stability under pressure.
- • **Tailored for MerCruiser:** Specifically designed for Mercury Marine and MerCruiser applications—no guesswork, just perfect synergy.
- • **Precision Fluid Regulation:** Prevents backflow to maintain flawless engine performance every time.
- • **Seamless OEM Compatibility:** Engineered by Mercury Marine for perfect fit and peak reliability.

## Overview

The Mercury Mercruiser Quicksilver OEM 8 Valve Check Kit (#21-30430A) is a genuine, compact, and durable component designed to regulate fluid flow and prevent backflow in Mercury Marine and MerCruiser engines, ensuring optimal performance and reliability.

## Description

New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check

## Features

- Genuine OEM Part: Ensures compatibility and reliability with Mercury Marine and MerCruiser systems
- Function: The check valve kit is designed to regulate the flow of fluids within the engine system, preventing backflow and ensuring optimal performance
- Application: Designed for use in specific Mercury Marine and MerCruiser applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mercury Marine/Mercruiser |
| Brand | MERCURY |
| Model | Mercury |
| Item Weight | 1 pounds |
| Product Dimensions | 2 x 2 x 2 inches |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 30430A8 |

## Product Details

- **Manufacturer Grade:** Grade 2
- **Color:** Silver
- **Brand:** MERCURY
- **UPC:** 745061134102
- **Manufacturer:** Mercury Marine/Mercruiser

## Images

![New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check - Image 1](https://m.media-amazon.com/images/I/519lR2MwVFL.jpg)
![New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check - Image 2](https://m.media-amazon.com/images/I/51CHonIFFUL.jpg)
![New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check - Image 3](https://m.media-amazon.com/images/I/61zbLoTEkRL.jpg)
![New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check - Image 4](https://m.media-amazon.com/images/I/71I6PtWKkbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed
*by T***T on March 10, 2020*

Perfect fit

### ⭐⭐⭐⭐⭐ As described
*by A***R on December 4, 2019*

Fit perfectly

## Frequently Bought Together

- New Mercury Mercruiser Quicksilver Oem Part # 21-30430A 8 Valve Kit-Check
- Sierra 18-7812 Marine Fuel Pump Kit for Mercury/Mariner Outboard Motor
- CDI Electronics 174-5456 Mercury/Mariner Stator - 6 Cyl. 9 Amp (1976-1989)

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**Shop now:** [https://www.desertcart.tn/products/207252035-new-mercury-mercruiser-quicksilver-oem-part-21-30430a-8-valve](https://www.desertcart.tn/products/207252035-new-mercury-mercruiser-quicksilver-oem-part-21-30430a-8-valve)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-20*