MERCURY Outboard Oil Filter 35-877761K01 — Screw-On OEM Direct-Fit with Pleated Media for 75–115hp & 150hp EFI

The MERCURY 35-877761K01 is a factory-style screw-on 4-stroke outboard oil filter designed to trap contaminants and protect engine oil systems on compatible Mercury fourstroke engines.

This oil filter is an OEM-quality replacement from MERCURY (Quicksilver Precision Parts) engineered for specific fourstroke outboard models. Built with a pleated media designed to capture particles and formed to fit exactly where your engine requires, it makes routine maintenance straightforward. The cartridge is intended for direct fitment on select Mercury 75–115hp and 150hp EFI outboards as well as the 105hp EFI jet drive, and it ships as a single screw-on filter ready to install with common tools.

Which engines will this MERCURY oil filter fit?

This filter fits designated Mercury fourstroke outboards within precise power and serial ranges. Confirm compatibility by checking your engine model and serial number against the listed ranges to ensure a correct match before purchase.

• Designed for Mercury 75–115hp FourStroke outboards (serial No. 1B366823 - 2B094995).
• Also suitable for 150hp EFI FourStroke outboards.
• Compatible with the 105hp EFI Jet drive models.
• Sold as one screw-on unit; verify part number 35-877761K01 against your parts manual.

How does the filter improve oil system longevity?

The filter’s M-pleated media captures a wide range of contaminants that circulate through the engine oil, helping reduce abrasive wear on bearings and internal surfaces. While no filter stops all wear, using a precision-fit OEM component helps maintain the designed flow and filtration characteristics of your engine.

• M-pleated cleansing media attracts and retains particulates effectively.
• Screw-on design preserves correct oil-flow dynamics specified by Mercury.
• Reduces the risk of larger debris circulating in the lubrication system.
• Engineered to meet original equipment fit and performance standards.

What tools and steps are needed to replace this filter?

Replacement is straightforward with basic tools and an oil filter wrench. Remove the drained and cooled oil, unthread the old filter, lubricate the new filter’s sealing gasket lightly with clean oil, and hand-tighten the new unit to the specified torque or snugness per the engine manual.

• Recommended: standard oil filter wrench and a drain pan for used oil.
• Hand-tighten after lightly oiling the gasket for an effective seal.
• Follow engine manual torque or turn-count guidance when installing.
• Always dispose of used oil and filters per local regulations.

Why choose the MERCURY OEM filter over aftermarket options?

OEM filters are built to match the original equipment specifications and tolerances of Mercury engines. That assures the intended fit, bypass settings and filtration characteristics rather than relying on generic substitutes that may differ in media, seal size or bypass performance.

• Manufactured to Mercury’s engineering and testing standards.
• Exact fit reduces installation issues and potential leaks.
• Consistent filtration and bypass behavior preserved for engine longevity.
• Backed by Mercury’s parts expertise and compatibility verification.

Who is this for: This part is aimed at boat owners, marine technicians and fleet managers who maintain Mercury fourstroke outboards in the specified power and serial ranges and prefer OEM replacement parts. If you perform routine oil service on compatible Mercury engines and want a direct-fit, manufacturer-specified filter that simplifies maintenance while preserving the engine’s designed flow and filtration characteristics, this MERCURY 35-877761K01 is an appropriate choice.