B62 Mercury Quicksilver 850839T Exhaust Valve. The valve will fit 8hp, 9.9hp, 13.5hp, and 15hp Mercury Outboards. Casting number 66M. Good USED Condition. Comes as pictured. Please verify the part number is correct for your application. Thank you for shopping Madlin Marine Parts.
Mercury 850839T fits the following Mercury Outboard Intake/Exhaust Valves;