MERCURY FourStroke Screw-On Oil Filter 35-877761K01 for 75–115hp & 150hp EFI — OEM M-pleated Media

The MERCURY 35-877761K01 is an OEM screw-on oil filter engineered for FourStroke outboards to trap contaminants and protect engine oil circulation.

This genuine Mercury/Quicksilver Precision Parts oil filter fits specified FourStroke outboards and is designed for quick, reliable replacements during routine maintenance. It uses M-pleated filtration media to capture particles and help maintain clean oil flow, and it’s sized and threaded to match Mercury units so installation is straightforward with common tools.

Which engines is this oil filter compatible with?

The 35-877761K01 is specified for select Mercury FourStroke outboards. It fits most 75–115hp FourStroke models within the listed serial ranges and some higher-displacement EFI units.

• Compatible with Mercury 75–115hp FourStroke (serial No. 1B366823 - 2B094995).
• Also fits the 150hp EFI FourStroke and the 105hp EFI Jet models.
• OEM design ensures correct thread, seal, and overall dimensions for these engines.

How easy is it to replace this screw-on oil filter?

Replacing this filter is designed to be quick and simple for anyone familiar with basic outboard maintenance. The screw-on design allows removal and installation with common hand tools or a standard oil filter wrench.

• Screw-off removal with an oil filter wrench or strap wrench.
• Hand-tighten to manufacturer torque recommendations for a proper seal.
• Replacement takes just minutes during scheduled oil changes.

What filtration performance can I expect from the M-pleated media?

The filter’s M-pleated element increases surface area to capture a majority of oil-borne contaminants while maintaining flow. This balance helps keep circulating oil cleaner between service intervals when used with proper oil and change schedules.

• M-pleated media captures suspended particles and debris efficiently.
• Designed to preserve oil flow under normal operating conditions.
• OEM filtering characteristics matched to Mercury maintenance guidelines.

What tools and checks are recommended when changing this filter?

Use a quality oil filter wrench and follow standard outboard oil change procedures, including inspecting the gasket and testing for leaks after startup. Keep spare filters on hand to avoid downtime on the water.

• Oil filter wrench or strap wrench for removal and installation.
• Clean rag, drip pan, and replacement engine oil as specified by Mercury.
• Inspect gasket seating and run engine briefly to confirm no leaks.

Who is this for: Boat owners, professional technicians, and marina service shops who maintain Mercury FourStroke outboards and want an OEM replacement part that matches factory fit and filtration performance. Ideal for routine maintenance on compatible 75–115hp engines, the 150hp EFI FourStroke, and the 105hp EFI Jet, this filter helps keep oil systems clean and running reliably when used as part of recommended service intervals.