Quicksilver Cartridge Fuel Filter Assembly for Mercury/Mariner 40–60hp 4‑cylinder EFI — 20‑micron, Translucent Bowl

The Quicksilver 879884T is an under-cowl inline cartridge fuel filter assembly designed to trap water and particles before they reach Mercury and Mariner 40–60hp 4-cylinder EFI outboards.

This cartridge-type fuel filter assembly replaces the screw-on style bowl found beneath the engine cowl on compatible Mercury and Mariner four-stroke outboards. Built to OEM specifications, it includes a preinstalled replaceable filter element and a translucent bowl so you can inspect fuel condition at a glance. Use it to help maintain engine responsiveness and reduce the risk of contaminated fuel causing poor performance or service interruptions while on the water.

How does this filter protect my outboard's performance?

The 20-micron cartridge captures small particles and separates moisture that can degrade fuel quality and harm fuel system components. By collecting contaminants before they reach injectors and pumps, it helps preserve fuel delivery consistency and throttle response. Regular replacement of the cartridge keeps filtration effective over time.

• 20-micron filtration rating to trap fine debris
• Cartridge element positioned inline for efficient flow
• Removable bowl simplifies element replacement
• Designed to match Mercury Marine OEM fit and function

Will this fit my Mercury or Mariner 40–60hp 4-stroke engine?

Yes, this assembly is engineered for Mercury 40–60hp 4-cylinder EFI four-stroke outboards that use the screw-on bowl style mounted under the engine cowl. It’s a direct replacement that installs in the same location and orientation as the original part. Verify compatibility by checking your engine model year and service manual if unsure.

• Intended for Mercury/Mariner 40–60hp 4-cylinder EFI 4-strokes
• Screw-on bowl configuration for under-cowl installation
• OEM-spec dimensions and mounting points for straightforward swap
• Includes factory-installed replacement cartridge element

How easy is maintenance and filter replacement?

Maintenance is simple: remove the bowl, withdraw the spent cartridge, and insert a new element. The translucent bowl gives a quick visual check for water, varnish, or debris so you can service only when needed. Reassembly uses the same screws and seals as the original design for a secure, leak-resistant fit.

• Translucent bowl for visual inspection of fuel and contaminants
• Screw-on removal enables tool-free or minimal-tool service
• Replacement cartridge installs quickly — no special adapters required
• Matches Mercury Marine replacement protocols for reliability

What materials and quality standards does this assembly use?

Manufactured to meet Mercury Marine replacement part standards, this fuel filter assembly uses materials selected for marine environments and chemical exposure. The cartridge media and bowl materials resist degradation from modern fuels and additives. Choosing a Quicksilver branded part means the part has been designed and tested for repeated use in saltwater and freshwater conditions.

• Engineered to Mercury Marine OEM specifications
• Materials sized and rated for marine fuel systems
• Cartridge media optimized for particulate and moisture control
• Durable bowl construction for multiple service cycles

Who is this for: The Quicksilver 879884T cartridge fuel filter assembly is intended for boat owners, mechanics, and service shops maintaining Mercury or Mariner 40–60hp 4-cylinder EFI four-stroke outboards that use the under-cowl screw-on bowl style. It’s a suitable upgrade or direct replacement for anyone seeking OEM-level fit, simple visual inspection of fuel condition, and reliable particulate/moisture filtration to support consistent engine operation on day trips, fishing runs, or extended outings.