The Standard Manual Adjustable Jack Plate is designed for outboard motors up to 30hp (without factory trim and tilt), with an enhanced gear ratio for effortless, precise motor lifting. Compatible with: Outboard motors up to 30 hp, if: No factory electric trim and tilt, and No manual tilt gas shock assist Outboard motors 0-20 hp with factory electric trim and tilt Not Compatible with: 25-30 hp motors with factory electric trim and tilt and any motor with manual tilt gas shock assist Any motor with mounting brackets wider than 10 3/4 inches If your motor mounting brackets are wider than 10 3/4 inches, you will need to purchase the Large Unit In those cases, use the Large Unit instead: If your motor is 25-30 hp and has factory electric trim and tilt or manual tilt gas shock assist If your motor&&';;s mounting brackets are wider than 10 3/4 inches What is a Jack Plate for an Outboard Motor? A jack plate is a mounting device that raises or lowers your outboard motor, providing essential adjustments to optimize boat performance. Here&&';;s why a jack plate is an essential addition: Height Adjustment: Easily raise or lower your motor for better performance relative to the waterline. Enhanced Performance: Reduced drag increases speed, fuel efficiency, and handling. Improved Trim and Tilt: Gain finer control of motor positioning in various water conditions. Transom and Propeller Protection: Higher mounting positions protect against water and debris. Load Balancing: Adapt motor height for better boat balance and weight distribution, enhancing efficiency. Overall, a jack plate is a valuable asset for boaters seeking peak performance and versatility from their outboard motors. Please Note: Carefully review the product measurements to ensure compatibility with your motor. Feel free to contact us for guidance!