Mercury - Fuel Filter Kit Under-Cowl White Bowl & Black Top Assembly Viton Seal & Screen Part Number 896375K01. Overview. There's something reassuring about knowing your fuel system is clean, steady, and protected long before the fuel ever reaches your engine. The Mercury 896375K01 Fuel Filter Kit brings that peace of mind back to your under-cowl setup. It's a small component, tucked away beneath the engine cover, but the difference it makes shows up every time the motor fires on the first turn