Dokili Fuel Filter for 75–250hp Mercury/Mariner Verado & Optimax DFI — 2-Pack with Wrench, OEM Compatible

Dokili Fuel Filter is a drop-in replacement for 75–250hp Mercury/Mariner Verado and Optimax DFI engines that delivers cleaner fuel flow and includes an install/removal wrench in a 2-pack.

This replacement fuel filter is engineered to match common OEM part numbers used across Mercury, Mariner, Quicksilver, Sierra and compatible aftermarket lines. It fits a wide range of 75–250hp outboard and stern-drive engines, offering a robust construction and consistent fuel delivery so your boat runs smoothly. Each set ships with two filters and a dedicated tool wrench to simplify installation and removal during routine maintenance.

Which engines and part numbers does this filter fit?

This Dokili filter covers numerous Mercury and Mariner applications from 75 through 250 horsepower, including Verado and Optimax DFI systems. It is cross-referenced to many OEM and aftermarket numbers so you can confirm fitment quickly.

• Compatible OEM numbers: Quicksilver 8M0060041, 8M0122423, 8M0020349, 884380T
• Mercury Marine references: 35-884380T, 35-8M0020349, 35-8M0060041
• Sierra: 18-7981; Mallory: 9-37970; Pro Marine: 884380-1
• Recommended for 75–250hp outboards and MerCruiser stern drives

How does this filter improve fuel flow and engine response?

The filter is built to maintain steady fuel delivery by trapping contaminants before they reach the fuel system. Cleaner fuel reduces the risk of clogs, helps maintain consistent acceleration and supports reliable engine behavior under load.

• Media designed to capture particulates and rust from tank fuel
• Engineered pressure characteristics to avoid fuel starvation under throttle
• Durable casing reduces the chance of deformation or leaks

What materials and construction quality can I expect?

Dokili uses corrosion-resistant materials and reinforced sealing to withstand marine environments. The construction is intended for repeated seasonal use and to resist common stressors like vibration, moisture and fuel additives.

• Robust outer housing to resist impact and crushing
• Quality filter media for consistent particle retention
• Precision sealing to prevent bypass and leaks

What comes in the box and how easy is installation?

Each purchase includes two fuel filters plus a dedicated install/removal tool wrench to streamline servicing. The filter is a direct-replacement design, so no modifications are required for compatible engines.

• 2x Dokili fuel filters for immediate spares or dual-engine upkeep
• 1x install/removal tool wrench to torque and remove canisters safely
• Simple hand tools usually suffice; follow engine manufacturer torque specs

Who is this for: Boaters and marine technicians who need a reliable, OEM-compatible fuel filter for 75–250hp Mercury/Mariner outboards and stern-drive engines. It’s suited for routine maintenance, seasonal winterizing, or as a spare on vessels where proven part cross-references and an included wrench save time during filter changes. Ideal when you want a cost-effective alternative that matches common Quicksilver, Sierra, Mallory and Mercury part numbers and keeps fuel systems cleaner between service intervals.