Mercury - Vented Splash Cover 8M0228514. Everyday protection for your 225 HP inline-six cowling-built for running and trailering.. Keep your Mercury 225 HP L6 looking sharp with a vented splash cover that is made to fit the inline-six cowling profile. The tailored shape hugs the curves for a clean, secure fit that helps reduce flapping at speed. A Polysoft II marine-grade outer shell helps shed spray while still allowing airflow, which helps reduce trapped moisture. Inside, a soft, non-abrasive