OIL FILTER 825467T02

Function and technical context

This oil filter acts as a critical component in the lubrication system of Mercury 8 and 9.9 hp outboard motors, as well as Yamaha F8 and F9.9 models. Its function is to retain metal particles, sediments and contaminants from internal engine wear, ensuring that only clean and purified oil circulates through the lubrication passages. A clogged or poor filter compromises the protection capacity of the oil, which causes increased friction, greater tearing of internal components and, in extreme cases, engine seizure. In marine applications, where the engine operates under variable load and exposure to saline conditions, maintaining optimal filtration is essential to prolong the life of the unit.

When to replace this part?

Oil filters on outboard motors should be inspected regularly during each seasonal maintenance and replaced if they have visible debris buildup, marked discoloration, or have reached the manufacturer's recommended operating hours. Although there is no universal interval, it is common to check the condition after 100 to 150 hours of navigation or annually if the engine is not used intensively. Preventive filter change is a minimal investment compared to the cost of repairs resulting from poor lubrication; In addition, doing it before fishing campaigns or prolonged navigation avoids surprise breakdowns on the high seas.

Engine Compatibility

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers