{"product_id":"bosch-425491-thermocouple-oem-replacement","title":"Bosch 425491 Thermocouple Oem Replacement","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe BOSCH 425491 is an OEM thermocouple designed for use in gas-fired appliances where pilot flame sensing is required. A thermocouple generates a small millivolt signal when its sensing tip is heated by a standing pilot flame, and that signal holds open the main gas valve. When the thermocouple degrades or fails, the pilot will not stay lit and the appliance shuts down. Licensed gas techs and plumbers replace this component as a standard service procedure on water heaters, boilers, and similar gas-burning equipment.\u003c\/p\u003e\u003cp\u003eThis thermocouple is suited for residential and light commercial gas appliances that use a standing pilot ignition system. It is intended as a direct OEM-style replacement, restoring the original factory-specified sensing performance without modifications to the gas valve or pilot assembly.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOEM part manufactured by BOSCH for direct replacement accuracy\u003c\/li\u003e\n\u003cli\u003eGenerates millivolt signal to hold gas valve open during normal pilot operation\u003c\/li\u003e\n\u003cli\u003eDesigned for standing pilot ignition systems in gas-fired appliances\u003c\/li\u003e\n\u003cli\u003eReplaces a failed thermocouple without requiring valve or pilot hood modifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement thermocouple for BOSCH gas-fired appliances equipped with standing pilot ignition systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or gas technician in accordance with local codes and the applicable sections of the International Fuel Gas Code. Shut off the gas supply and allow all components to cool completely before beginning work. The thermocouple tip must be positioned correctly in the pilot flame to ensure adequate millivolt output. Do not overtighten the thermocouple connection at the gas valve; hand-tight plus a quarter turn is the general industry practice for this fitting type.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type\u003c\/strong\u003e: Thermocouple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System\u003c\/strong\u003e: Standing Pilot\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: BOSCH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 425491\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BOSCH","offers":[{"title":"Default Title","offer_id":51199926731058,"sku":"00425491","price":52.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307153035.jpg?v=1779687271","url":"https:\/\/voomisupply.com\/products\/bosch-425491-thermocouple-oem-replacement","provider":"Voomi Supply","version":"1.0","type":"link"}