ARCO Marine Replacement Outboard Tilt Trim Motor - Yamaha-4 Bolt, 5/8" Flat Blade Shaft [6258]Replacement Outboard Tilt Trim Motor Yamaha 4 Bolt, 5 8" Flat Blade Shaft Replacement outboard tilt trim motor that will fit Yamaha 2005 UP 75 HP 4 Stroke, 2005 UP 90 HP 4 Stroke, 2 wire connection, 4 bolt mount, Includes O ring & Coupler, Ring Terminal Ends. ARCO advises cleaning all connections: A corroded connection creates resistance, lowering the amperage required to operate the motor. Features: Tilt trim motors are dynamically tested to ensure