Mercury/Ouicksilver Thermostat Kit Mercury/Mariner 803061T 1 by Quicksilver Marine $30.98 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Ouicksilver Thermostat Kit Mercury/Mariner #710-803061T 1 2 Cycle 70-125hp, 1987 & Later.