Sierra Thermostat Kit Mercruiser - S18-3647 thermo housing this bag is built to

this bag is built to last

Tough waterproof bags manufactured from reinforced PVC with welded seams

these lenses not only elevate the look of your port but also provide a touch of sophistication

Crafted from durable plastic

Sierra Thermostat Kit Mercruiser - S18-3647 thermo housing this bag is built toThe Sierra Thermostat Kit Mercruiser S18 3647 comes with everything you need to replace your old thermostat. This kit includes a thermostat, a thermostat cover gasket, an o ring, and a thermostat housing gasket. It is compatible with part numbers 807252Q5, 807252T8, 27 48818 1, 27 33179 2, 27 47510, 27 30224, 27 53045 1, and 27 33918. Trust the quality of Sierra's products for your marine engine needs.