The 8M0232733 is an OEM Mercury Marine 100-hour maintenance kit specifically engineered for 40‑, 50‑, and 60 hp EFI 4‑stroke outboard engines. Designed as a replacement for the earlier 8M0090558 kit, it includes all essential replacement components—oil filter, low- and high-pressure fuel filters, engine oil drain seal, two gearcase drain seals, thermostat, and dual thermostat gaskets—to simplify and streamline routine maintenance tasks. Built to factory specifications, this complete kit supports accurate fitment and reliable performance, helping extend engine life and maximize boating enjoyment.