Essential for your 4-stroke EFI outboard, the Quicksilver Oil Change Kit for Mercury 25-30hp Engines maximizes engine performance. Kit is made for your Mercury 25-30hp, 4-stroke EFI outboard engine. It also works with Mariner outboards or MerCruiser stern drives. Includes two 1L bottles of Quicksilver 25W-40 four-stroke oil, filter, drain plug seal, and plastic drip tray. Meets with Mercury Marine manufacturer specifications and contains all essential items needed for a quick and easy oil change. Fits Mercury 25-30hp, 4-stroke EFI outboard engines Also works with Mariner outboards and MerCruiser stern drives Enhances performance, fuel efficiency, and longevity Everything needed for an easy oil change