SEI MARINE PRODUCTS- Mercury Mariner Force Clutch Dog 52-822539T 3 Jaw 50-200 HP 2 Stroke 4 Stroke This clutch dog replaces OE#: 52-822539T and fits Mercury Mariner and Force outboard lower units with the following applications:80-150hp inline 4 & 6 cylinder 2 stroke 1978-1988, 50-125 HP 1987-current, 50-150 HP 4 Stroke, and 2.0/2.4/2.5L V6 1979-current.