---
product_id: 124425943
title: "Sierra International 18-6406 Marine U-Joint for Mercruiser Stern Drive"
brand: "sierra"
price: "$232.04"
currency: USD
in_stock: true
reviews_count: 4
category: "Sierra"
url: https://www.desertcart.us/products/124425943-sierra-international-18-6406-marine-u-joint-for-mercruiser-stern
store_origin: US
region: United States of America
---

# 0.078" Bore Sierra Part #18-7057 Universal Fit Sierra International 18-6406 Marine U-Joint for Mercruiser Stern Drive

**Brand:** sierra
**Price:** $232.04
**Availability:** ✅ In Stock

## Summary

> ⚓ Navigate with Confidence!

## Quick Answers

- **What is this?** Sierra International 18-6406 Marine U-Joint for Mercruiser Stern Drive by sierra
- **How much does it cost?** $232.04 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/124425943-sierra-international-18-6406-marine-u-joint-for-mercruiser-stern)

## Best For

- sierra enthusiasts

## Why This Product

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

## Key Features

- • **Easy Installation:** Streamlined design for hassle-free setup.
- • **Quality Assurance:** Sierra's trusted reputation ensures reliability.
- • **Durable Construction:** Built to withstand the rigors of marine use.
- • **Precision Engineering:** Designed for optimal performance in marine environments.
- • **Universal Compatibility:** Fits a variety of Mercruiser Stern Drive models.

## Overview

The Sierra International 18-6406 Marine U-Joint is engineered for precision and durability, featuring a 0.078" bore and universal fit for various Mercruiser Stern Drive models. Ensure your marine vessel operates at peak performance with this reliable component.

## Description

OEM: MERCURY MARINE 865493A01, 865496A01

Review: Worked Fine - Worked fine. Took me forever to find the right ujoint for a Volvo Penta/ They only sell the complete assembly now. Much cheaper than at a marina.
Review: Five Stars - Worked well

## Features

- Sierra Needle and Seat
- Bore: 0.078
- Sierra part number: 18-7057
- Fit specific, check part numbers to ensure proper fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000N9L4QM |
| Best Sellers Rank | #2,145,811 in Automotive ( See Top 100 in Automotive ) #1,784 in Automotive Replacement Universal Joints |
| Brand | Sierra |
| Brand Name | Sierra |
| Color | white |
| Customer Reviews | 3.9 out of 5 stars 9 Reviews |
| Global Trade Identification Number | 00808282182618 |
| Included Components | Sierra International 18-6406 Marine U-Joint for Mercruiser Stern Drive |
| Item Type Name | Sierra International 18-6406 Marine U-Joint for Mercruiser Stern Drive |
| Manufacturer | Sierra |
| UPC | 808282182618 |
| Unit Count | 1.0 Count |
| Warranty Description | LIMITED WARRANTY |

## Images

![Sierra International 18-6406 Marine U-Joint for Mercruiser Stern Drive - Image 1](https://m.media-amazon.com/images/I/71Z4UuYHb4L.jpg)
![Sierra International 18-6406 Marine U-Joint for Mercruiser Stern Drive - Image 2](https://m.media-amazon.com/images/I/31e0Xh+YaLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked Fine
*by K***E on February 21, 2014*

Worked fine. Took me forever to find the right ujoint for a Volvo Penta/ They only sell the complete assembly now. Much cheaper than at a marina.

### ⭐⭐⭐⭐⭐ Five Stars
*by A***R on February 6, 2017*

Worked well

### ⭐ Get the EMP94-94000 instead/ better fit.
*by D***Y on January 29, 2020*

Not the same cap as OEM GKN u-joint. See EMP94-94000 instead. Cap has skirt to assist in installation.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-20*