Take control of your day with the versatility and performance of 804540 Thermostat 122°F /50°C 853704 For Mercury Mariner 2 2.5 3.5 4 5 6 25 30 HP Outboard Motors 8537041 Replace Sierra 18-3638. Smart, efficient, and built to last — an essential in any collection. Browse and buy online at Keser.pl — trusted products at great prices.