Mercury – Active Trim Kit | 3.4L V6 & 4.6L V8 150–300 HP | Single Engine FourStroke / OptiMax | 8M0111545Mercury Active Trim Kit 3. 4L V6 & 4. 6L V8 150300 HP Single Engine FourStroke OptiMax 8M0111545 Overview The Mercury Active Trim Kit (8M0111545) is built for single engine installations of Mercury FourStroke 150 HP and OptiMax 150250 HP outboards, as well as 3. 4 L V6 175225 HP and 4. 6 L V8 200300 HP models. It automatically adjusts your engine trim for smoother takeoffs, better fuel economy, and consistent handlingno manual trimming needed. Active