--- product_id: 2594095 title: "Sierra 18-7944 Fuel Water Separator Filter, 10 Micron, MerCruiser/Mercury" brand: "sierra" price: "$32.83" currency: USD in_stock: true category: "Sierra" url: https://www.desertcart.us/products/2594095-sierra-18-7944-fuel-water-separator-filter-10-micron-mercruiser store_origin: US region: United States of America --- # Ethanol-ready for water absorption 90 GPH high flow rate 10 micron filtration >90% efficient Sierra 18-7944 Fuel Water Separator Filter, 10 Micron, MerCruiser/Mercury **Brand:** sierra **Price:** $32.83 **Availability:** ✅ In Stock ## Summary > ⚓ Keep your engine fueled and flawless — don’t let water slow your wave! ## Quick Answers - **What is this?** Sierra 18-7944 Fuel Water Separator Filter, 10 Micron, MerCruiser/Mercury by sierra - **How much does it cost?** $32.83 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/2594095-sierra-18-7944-fuel-water-separator-filter-10-micron-mercruiser) ## 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 - • **Ethanol-Ready Design:** Engineered to handle ethanol-blended fuels that attract more water, preventing costly damage. - • **High-Flow Performance:** Delivers a robust 90 gallons per hour to power even the most demanding marine engines. - • **Seamless Direct Replacement:** Fits MerCruiser and Mercury models (1967-2014) with exact OEM thread compatibility. - • **Built to Last with Confidence:** Durable metal construction backed by a limited lifetime warranty for worry-free boating. - • **Precision 10 Micron Filtration:** Blocks 90%+ of particles as tiny as 10 microns for pristine fuel purity. ## Overview The Sierra 18-7944 Fuel Water Separator Filter offers over 90% efficiency at filtering particles down to 10 microns, with a high 90 GPH flow rate optimized for MerCruiser and Mercury marine engines. Designed specifically for ethanol-blended fuels that absorb more water, it ensures superior protection and performance. This direct OEM replacement fits models from 1967 to 2014, combining durability and precision to keep your watercraft running smoothly. ## Description Ethanol blended fuel absorbs more water and loosens more particulants than regular fuels. Proper filtration is required for every horsepower engine. Sierra's 10 micron filters are over 90% efficient at removing particles as small as 10 micron. All filters flow at 90 GPH to feed even the hungriest motor. ## Features - 10 MICRON FILTRATION: Over 90 percent efficient at removing particles as small as 10 microns - HIGH FLOW: 90 GPH flow rate supports high-performance marine engines - ETHANOL READY: Designed for ethanol-blended fuels that absorb more water than regular gasoline - DIRECT REPLACEMENT: Replaces Racor PFF5510, Quicksilver 35-802893Q, Mercury 35-807172, MerCruiser 35-806771 - PROPER FIT: Fits MerCruiser sterndrive and Mercury Marine applications, 1967-2014; 11/16-16 thread ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001F0MACK | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #26,868 in Automotive ( See Top 100 in Automotive ) #141 in Automotive Replacement Fuel Filters | | Brand | Sierra | | Brand Name | Sierra | | Compatible with Vehicle Type | watercraft | | Customer Reviews | 4.8 out of 5 stars 690 Reviews | | Global Trade Identification Number | 00808282201852 | | Included Components | Fuel Water Separator Filter | | Item Type Name | Fuel Water Separator Filter | | Item Weight | 12.96 ounces | | Manufacturer | Teleflex Marine | | Manufacturer Part Number | 18-7944 | | Manufacturer Warranty Description | Limited Lifetime Warranty | | Model Number | 18-7944 | | Number of Items | 1 | | OEM Equivalent Part Number | 35-802893Q, 35-806771, 35-807172, 35-8M0154755, PFF5510 | | Outer Material | Metal | | Product Grade | Replacement Part | | Style | Regular | | Style Name | Regular | | UPC | 808282201852 | | Unit Count | 1 Count | | Vehicle Service Type | watercraft | ## Product Details - **Brand:** Sierra - **Item Weight:** 12.96 ounces - **Outer Material:** Metal - **Product Grade:** Replacement Part - **Vehicle Service Type:** watercraft ## Images ![Sierra 18-7944 Fuel Water Separator Filter, 10 Micron, MerCruiser/Mercury - Image 1](https://m.media-amazon.com/images/I/71ZaRCd5iTL.jpg) ![Sierra 18-7944 Fuel Water Separator Filter, 10 Micron, MerCruiser/Mercury - Image 2](https://m.media-amazon.com/images/I/71BDHh997ZL.jpg) ![Sierra 18-7944 Fuel Water Separator Filter, 10 Micron, MerCruiser/Mercury - Image 3](https://m.media-amazon.com/images/I/81uHBTWRzHL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/2594095-sierra-18-7944-fuel-water-separator-filter-10-micron-mercruiser](https://www.desertcart.us/products/2594095-sierra-18-7944-fuel-water-separator-filter-10-micron-mercruiser) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-16*