Yamaha Upper Casing Exhaust Kit - MAR-EXHKT-04-00. Genuine Yamaha OEM Exhaust Repair Kit For 3.3L V6 F200, F225 & F250 Outboards (2004 & Newer). The Yamaha Upper Casing Exhaust Kit (MAR-EXHKT-04-00) is a genuine OEM repair kit engineered for 2004 and newer Yamaha 3.3-liter F200, F225, and F250 four-stroke outboards. Yamaha developed this kit to simplify exhaust system repairs and help eliminate compatibility issues caused by design changes made over the years.. Ordering individual 3.3L upper cas