Quicksilver 8M0139434 Thermostat for Select Mercury 15-20hp EFI Outboards D-2023-01-03 Solid brass inserts for efficient

Solid brass inserts for efficient electrical conductivity

0L Alpha sterndrive engines up to 150hp used in runabouts and pontoon boats

4:8:1 Gear Ratio

Copper core and ribbed suppressor seal prevent misfire and flashover

Quicksilver 8M0139434 Thermostat for Select Mercury 15-20hp EFI Outboards D-2023-01-03 Solid brass inserts for efficientQuicksilver 8M0139434 Thermostat fits newer Mercury 15 20hp EFI outboards. Featuring a self cleaning design, it allows cooling system contaminants to flush through closing surfaces. This thermostat is calibrated for a precise temperature response to ensure peak performance and efficiency. Fits Mercury 15hp and 20hp EFI 4 stroke outboards (2017+) Calibrated for proper cooling system temperature response Self cleaning design prevents blockage from