Mercury 877761K01 75-115/150EFI HP 4-Stroke Outboard Oil Filter

Mercury 35-877761K01 Oil Filter for 75-150 HP FourStroke Outboards

The Mercury 35-877761K01 Oil Filter is a genuine OEM replacement oil filter for select Mercury and Mariner FourStroke outboards. This screw-on oil filter is designed for Mercury 75-115 HP FourStroke outboards with serial number 1B366823 through 2B094995, as well as select 150 HP EFI FourStroke and 105 HP EFI Jet applications where specified.

Built for marine engine use, this Mercury oil filter uses superior M-pleated cleansing filter media to remove the majority of harmful oil contaminants while supporting proper oil flow to vital engine components. Replacing the oil filter during routine service helps protect your outboard and maintain reliable performance.

Product Features:

• Genuine Mercury replacement oil filter
• Fits select Mercury and Mariner 75-115 HP FourStroke outboards
• Also fits select 150 HP EFI FourStroke and 105 HP EFI Jet applications where specified
• Contains one screw-on type oil filter
• Superior M-pleated cleansing filter media removes the majority of oil contaminants
• Helps keep engine oil cleaner during service intervals
• Easy to replace with common tools and an oil filter wrench
• Built to Mercury Marine fit, function, and performance standards

Product Details:

• Brand: Mercury
• Manufacturer Part Number: 35-877761K01
• OEM Part Number: 877761K01
• Part Type: Screw-On Oil Filter
• Application: Select Mercury and Mariner FourStroke outboards
• Engine Family: 75-115 HP 1731cc FourStroke and 150 HP EFI FourStroke where specified

Fits Select Mercury Applications:

• Mercury and Mariner 75 HP FourStroke outboards, serial number 1B366823 through 2B094995
• Mercury and Mariner 90 HP FourStroke outboards, serial number 1B366823 through 2B094995
• Mercury and Mariner 115 HP FourStroke outboards, serial number 1B366823 through 2B094995
• Mercury 150 HP EFI FourStroke outboards, serial number 1B905505 and higher where specified
• Mercury 105 HP EFI Jet outboards where specified

General Installation Steps:

• Unscrew the old oil filter and clean the mounting base.
• Make sure the old gasket is removed from the mounting base.
• Apply a thin coat of oil to the new filter gasket.
• Make sure the gasket is seated properly in the base of the filter.
• Screw the filter on until the gasket contacts the base.
• Tighten 3/4 turn. Do not exceed 3/4 turn.
• Use an acceptable oil filter wrench if necessary.
• Refill the crankcase, run the engine, and check for leaks.
• Check the oil level after running the engine.

Maintenance Note: Change your oil and filter at least once each year, every 100 hours of normal use where recommended, or according to your owner’s manual based on hours of use and operating conditions.

Fitment Note: Oil filter fitment should be verified by outboard model, horsepower, engine family, serial number, parts diagram, or existing filter part number before ordering. Please confirm this oil filter is correct for your Mercury or Mariner FourStroke outboard before purchasing.

Frequently Asked Questions

What is the Mercury 35-877761K01 Oil Filter used for?

The Mercury 35-877761K01 is a genuine OEM screw-on oil filter for select Mercury and Mariner FourStroke outboards. Its M-pleated cleansing filter media is designed to remove the majority of harmful oil contaminants while supporting proper oil flow to vital engine components.

What Mercury and Mariner outboards does the Mercury 35-877761K01 oil filter fit?

The 35-877761K01 fits select Mercury and Mariner 75, 90, and 115 HP FourStroke outboards with serial numbers 1B366823 through 2B094995. It also fits select Mercury 150 HP EFI FourStroke outboards with serial number 1B905505 and higher and select 105 HP EFI Jet applications where specified.

How do I verify that the Mercury 35-877761K01 oil filter fits my outboard?

Verify the outboard model, horsepower, engine family, and serial number before ordering the Mercury 35-877761K01. You can also compare the applicable parts diagram or existing oil filter part number. The listed applications include specific serial-number ranges, so confirm your exact application before purchasing.

How do you install the Mercury 35-877761K01 oil filter?

Remove the old filter and clean the mounting base, making sure the old gasket is removed. Apply a thin coat of oil to the new gasket and seat it properly. Screw the filter on until the gasket contacts the base, then tighten 3/4 turn without exceeding 3/4 turn. Refill the crankcase, run the engine, and check for leaks and oil level.

What type of filter media does the Mercury 35-877761K01 use?

The Mercury 35-877761K01 uses M-pleated cleansing filter media. The product description states that this media removes the majority of oil contaminants while supporting proper oil flow to vital engine components during marine engine operation.

How often should the Mercury 35-877761K01 oil filter be changed?

The maintenance note recommends changing the oil and filter at least once each year, every 100 hours of normal use where recommended, or according to your owner's manual based on hours of use and operating conditions. Follow the maintenance schedule applicable to your specific Mercury or Mariner FourStroke outboard.

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