Dokili Fuel Filter 2-Pack for Mercury Optimax & Verado — 2-Micron Cartridge with Removal Tool

Dokili 2Pcs Fuel Filter w/Removal Tool replaces OEM in Mercury Optimax and Verado outboards to trap microscopic contaminants and simplify filter changes.

This two-piece filter kit is built for high-performance Mercury Mariner and Verado outboard engines and compatible stern drives, offering fine 2-micron filtration and a dedicated wrench to make service fast and leak-free. The cartridge design fits inline under-cowl vapor separator tank (VST) systems and matches common OEM part numbers so you can swap filters without modifying your fuel system.

Which engines and part numbers does this filter work with?

The Dokili fuel filter is designed to fit Mercury Mariner 75–250 HP Optimax DFI and Verado L4/L6 outboards, plus MerCruiser 4.5L and 6.2L stern drives. It is engineered to match multiple OEM references for straightforward replacement.

• Compatible HP ranges: 75, 90, 115, 135, 150, 175, 200, 225, 250.
• Direct replacement for 35-8M0122423, 8M0122423, 35-8M0020349, 8M0020349.
• Also replaces 35-884380T, 884380T, 35-8M0060041, 8M0060041 and aftermarket 18-7981, 9-37970, 884380-1, 31871.

How does the 2-micron paper improve engine performance?

The high-density 2-micron media captures fine dirt, rust, and water droplets before they enter the fuel system, protecting injectors and combustion chambers. Cleaner fuel flow helps reduce hesitation and maintains throttle response under load.

• Captures microscopic debris and scale that larger filters miss.
• Reduces injector wear and keeps fuel delivery consistent.
• Helps restore power and smooth acceleration when fouled filters are replaced.

What’s included and how does the removal tool help?

The kit contains two replacement filter elements with pre-installed O-rings and one dedicated removal socket to simplify maintenance. The removal tool prevents damage to the housing cap and speeds up swap-outs, whether on the dock or in a workshop.

• Two sealed filter cartridges ready for immediate installation.
• Pre-fitted rubber O-rings for reliable, leak-free sealing.
• Durable removal tool sized to avoid cracking or stripping the cap.

What materials and build quality can I expect?

Dokili filters use fuel-resistant polymer components and tightly pleated filter media for long-lasting marine service. The construction is chosen to withstand typical vibration, fuel additives, and saltwater environments without premature swelling or failure.

• Fuel-tolerant polymers for housings and end-caps.
• High-efficiency pleated paper rated to 2 microns.
• Factory-installed seals to prevent leaks and simplify fitment.

Who is this for: Boaters and technicians who run Mercury Optimax or Verado outboards (and compatible MerCruiser stern drives) and want a cost-effective OEM-fit replacement with fine filtration and a service tool included. Ideal for owners who perform routine maintenance themselves, professional marine shops, or anyone preparing a boat for peak-season use and wanting confidence that fuel supply remains clean and dependable.