MERCURY 25W-40 4-Stroke Outboard Oil Change Kit for 1.7L 75/90/115hp EFI — 5L Oil, Filter & Seal

Mercury's 8M0081917 oil change kit supplies the correct 25W-40 4-stroke marine oil, filter, drain plug seal and instructions to service Mercury 1.7L 75/90/115hp EFI FourStroke outboards.

This complete service pack is built specifically for Mercury 1.7-liter EFI FourStroke engines (serial numbers 1B366823-2B094995) so owners and technicians can perform a proper oil change using factory-specified parts and fluids. The kit contains five 1-liter bottles of Mercury SAE 25W-40 4-Stroke Marine Engine Oil, a premium Mercury oil filter, a drain plug seal and easy-to-follow instructions, all matched to Mercury’s OEM formulation and test standards.

What exactly is included in the kit and why does it matter?

The kit bundles the oil, filter and seal required to complete a full oil change for the listed 1.7L Mercury outboards, removing guesswork and simplifying maintenance. Using the correct oil viscosity and a Mercury filter helps preserve engine internals and maintain designed operating characteristics.

• Five 1-liter bottles of Mercury SAE 25W-40 4-Stroke Marine Engine Oil
• OEM Mercury oil filter sized for the 1.7L FourStroke engine
• Replacement drain plug sealing washer
• Step-by-step instructions for the specified serial number range

How does the 25W-40 oil protect a marine engine during use and storage?

Mercury’s marine oil formula includes additives tailored for saltwater and freshwater use that help resist corrosion and maintain lubricity under heat and load. The viscosity rating supports stable oil film at operating temperature, while the additive package helps protect components during off-season storage.

• Advanced corrosion inhibitors for protection on water and in storage
• Viscosity retention under high-rpm, high-temperature operation
• Engineered lubricity to reduce wear on moving parts

Is this kit the right fit for my Mercury outboard model and serial number?

Confirm compatibility by matching your engine displacement and serial number range to the kit listing: Mercury 1.7L 75/90/115hp EFI FourStroke with serial No. 1B366823-2B094995. Using the correct kit ensures filter size, oil volume and gasket type are correct for proper sealing and performance.

• Designed for Mercury 1.7-liter 75–115hp EFI FourStroke engines
• Specified serial number range included for exact fit
• Includes correct oil volume to complete the change per factory guidance

How does this OEM kit compare to buying parts separately?

Purchasing the OEM kit saves time and guarantees all parts meet Mercury’s manufacturing and testing standards. Kits reduce the risk of mismatched filters, incorrect oil viscosity, or missing seals that can cause leaks or suboptimal performance.

• Single purchase contains all required components for one service
• Factory-formulated oil and OEM filter tested for Mercury engines
• Clear instructions reduce installation errors and service time

Who this is for: Boaters, fleet managers and marine technicians who own or service Mercury 1.7L 75–115hp EFI FourStroke outboards and want a convenient, factory-specified solution for routine oil changes. The kit is ideal for anyone who prefers OEM fluids and parts to maintain warranty alignment and ensure consistent engine protection across seasons.