---
product_id: 2594096
title: "International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium"
brand: "sierra"
price: "1217832₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/2594096-international-18-7866-10-micron-high-capacity-fuel-water-separator
store_origin: VN
region: Vietnam
---

# 99.8% emulsified water removal 90 GPH high flow rate 10 Micron particle filtration International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium

**Brand:** sierra
**Price:** 1217832₫
**Availability:** ✅ In Stock

## Summary

> 💨 Fuel purity that keeps you ahead of the pack!

## Quick Answers

- **What is this?** International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium by sierra
- **How much does it cost?** 1217832₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/2594096-international-18-7866-10-micron-high-capacity-fuel-water-separator)

## 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

- • **Built to Endure:** Crafted with machined aluminum/stainless steel for marine-grade durability.
- • **High-Capacity Flow:** Delivers a robust 90 gallons per hour to power even the most demanding motors.
- • **Universal Compatibility:** Fits inboard, sterndrive, and outboard systems, including Yamaha MAR-FUELF-IL-TR.
- • **Crystal-Clear Fuel Protection:** Removes over 99.8% of emulsified water to safeguard your engine.
- • **Precision 10 Micron Filtration:** Filters particles as tiny as 10 microns, ensuring peak fuel purity.

## Overview

The Sierra 18-7866 is a high-capacity 10 micron fuel water separator filter designed to remove over 99.8% of emulsified water and filter particles down to 10 microns. With a flow rate of 90 GPH, it supports sensitive inboard, sterndrive, and outboard fuel injection systems, including Yamaha models. Built from durable machined aluminum or stainless steel, it ensures reliable performance in harsh marine environments while protecting your engine investment.

## Description

Sierra International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium

## Features

- Sierra Fuel Water Separators extract over 99.8 percent emulsified water from gasoline
- Universal Fit
- To protect sensitive inboard, sterndrive, and outboard fuel injection systems, Sierra 10 Micron Filters are recommended
- Item model number: ‎18-7866

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Sierra |
| Product Grade | Replacement Part |
| Outer Material | Aluminum or Stainless Steel |
| Vehicle Service Type | All Vehicles, RV, Campers, Boats, Trucks, Cars. Universal |
| Item Weight | 0.59 Kilograms |
| Style | Fuel Water Separators |
| Global Trade Identification Number | 00808282187330 |
| Manufacturer | Teleflex |
| Automotive Fit Type | Universal Fit |
| OEM Part Number | YAMAHA MAR-FUELF-IL-TR |
| UPC | 808282187330 |
| Model | Fuel Filter |
| Item Weight | 1.3 pounds |
| Product Dimensions | 6 x 4 x 4 inches |
| Item model number | 18-7866 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 18-7866 |

## Product Details

- **Brand:** Sierra
- **Product Grade:** Replacement Part
- **Outer Material:** Aluminum or Stainless Steel
- **Vehicle Service Type:** All Vehicles, RV, Campers, Boats, Trucks, Cars. Universal
- **Item Weight:** 0.59 Kilograms

## Images

![International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium - Image 1](https://m.media-amazon.com/images/I/71qNyvGzzOL.jpg)

## Questions & Answers

**Q: Will this work on a Yamaha 90 hp outboard**
A: The filtering size (10 micron) and flow rate capacity (90gph) will be more than enough for a 90HP outboard.  However, there are two other important factors:  
1. Make sure that the thread size of your filter mounting bracket, often referred to as the filter head, matches that of the filter you're purchasing.  For example, if your boat was originally configured with a Johnson or Evinrude and the filter head wasn't changed when the Yamaha was installed, then it's possible that the filter head had a 1"-14 thread.  If the boat was originally configure with a Mercury or Yamaha engine, then it's most likely 11/16"-16 thread.   The 18-7866 uses an 11/16"-16
2.  Be sure you have enough space between the filter head and whatever is below it to be able to install the filter.  The 18-7866 is taller than many other filters so for example if your filter head was installed close to the deck then you might not be able to use the taller filter.  The 18-7866 is 6"  tall.

**Q: Does this work with the yamaha bracket?**
A: It works with mine.  Check Sierra's website to make sure it's the right fit for your motor.

**Q: Do they make a shorter version of the 18-7866?**
A: Yes you can use the 18-7944 or the 18-7945

**Q: Can this be used instead of 18-7846**
A: No, they are different size filters

## Frequently Bought Together

- Sierra International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium
- Yamaha Original OEM Yamalube Acc-GEARL-UB-QT Marine Lower Unit Gearcase Lube Yamalube OEM - 2 Quarts
- Yamaha New OEM Yamalube 4M 10W30 4-Stroke Outboard Marine Oil, LUB-10W30-FC-04

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**Shop now:** [https://www.desertcart.vn/products/2594096-international-18-7866-10-micron-high-capacity-fuel-water-separator](https://www.desertcart.vn/products/2594096-international-18-7866-10-micron-high-capacity-fuel-water-separator)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-06*