Sierra 18-7866 10-Micron Fuel Water Separator for Yamaha MAR-FUELF-IL-TR | High Capacity
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Description
xOverview
Marine fuel integrity matters for reliable starts, steady performance, and smooth cruising. The Sierra 18-7866 is a high-capacity, 10-micron fuel water separator designed to work with Yamaha MAR-FUELF-IL-TR installations. It focuses on removing moisture and fine particulates before fuel reaches the engine, helping maintain clean fuel delivery in challenging marine environments.
What it does
This filter targets emulsified water and microscopic contaminants that can accompany gasoline in marine systems. By combining a proven 10-micron rating with a generous flow rate, it supports steady fuel supply while guarding sensitive fuel injection components.
Key benefits
- Removes over 99.8% of emulsified water from gasoline, reducing water-related fuel issues
- 10-micron filtration to limit tiny contaminants that can affect fuel quality
- High capacity housing and a 90 GPH flow to feed even larger or hungrier engines
- 6-inch (152.4 mm) length for robust filtration capacity
- Universal fit design for compatibility across marine systems
- Replaces Yamaha MAR-FUELF-IL-TR with a like-for-like fit and performance
Fit, compatibility, and installation
Engineered to support inboard, sterndrive, and outboard fuel injection setups, the Sierra 18-7866 is built to withstand the harsh marine environment. The universal-fit approach helps streamline replacements and upgrades in many Yamaha-based installations.
Real-world use and outcomes
In day-to-day boating, you might notice more consistent fuel delivery and fewer fuel-system complaints in engines that previously showed signs of moisture or fine particulate contamination. While results can vary with fuel quality and operating conditions, the filter is positioned to reduce water content and improve fuel cleanliness over time. Consider pairing this filter with regular maintenance checks and proper storage practices to support engine performance during saltwater seasons and long runs.
Specs at a glance
- Part number: 18-7866
- Micron rating: 10
- Flow: 90 GPH
- Length: 6 inches (152.4 mm)
- Fitment: Universal ( Yamaha MAR-FUELF-IL-TR compatible)
FAQ
Q: What does the Sierra 18-7866 filter protect against in Yamaha MAR-FUELF-IL-TR installations?
A: It helps remove emulsified water and small particulates, supporting cleaner fuel delivery and reduced water-related concerns.
Q: What are the key specs of this filter?
A: 10-micron rating, 90 GPH flow, high-capacity 6-inch housing, universal fit, designed for inboard, sterndrive, and outboard engines.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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