120 Deg. Thermostat for Mercury Mariner 2-cyl, 6-40 Hp | 3-cyl, 50-75 Hp | 4-cyl, 40-125 Hp | V6, 225 Hp outboards. Replaces Mercury 14586 and Sierra 18-3549.
Thermostat Kit 140 Deg. for MerCruiser V6 & V8 non-high performance GM engines with standard cooling. Replaces Mercury 807252Q4, 807252T7, and Sierra 18-3668.