Sierra 18-3544 Johnson Evinrude Thermostat Sierra high-quality replacement thermostat for JohnsonEvinrude Outboards. Interchangeable with JohnsonEvinrude Outboard 435491 437090 Mallory 9-43032 9-43036 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Engine Parts Product MPN 18-3544 Product UPC 808282227555 Fast Ship In Stock Ships Today