The SeaStar JP5040R Hydraulic Jack Plate is a high-performance solution designed to provide vertical engine adjustment for outboards up to 300HP. With a compact 4-inch setback, this plate is ideal for boaters looking to optimize their engine's water depth without moving the center of gravity too far aft. This unit is in very good condition and includes a brand-new SeaStar DK4420 wiring harness for a complete, ready-to-install package.