{"title":"Pentair MasterTemp 125 Water System Replacement Parts","description":"\u003cp\u003eFind replacement parts for the Pentair MasterTemp 125 Water System with ease using our clickable parts schematic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eClick on the Schematic Keys\u003c\/strong\u003e to view more information for each part.\u003c\/p\u003e","products":[{"product_id":"pentair-mastertemp-125-replacement-manifold-kit","title":"Pentair MasterTemp 125 Replacement Manifold Kit","description":"\u003cp\u003eThe Pentair MasterTemp 125 Manifold Kit (474972) is a genuine replacement part designed specifically for MasterTemp 125 Pool Heaters. This kit includes the Coil\/Tube Sheet Sealing O-Ring Kit, Manifold Bottom Plate, O-Ring, Manifold Baffle Plate, Bypass Valve, Manifold, Washer, and Screws.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":50301043474745,"sku":"474972","price":262.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/2320\/4665\/files\/pentair-mastertemp-125-manifold-kit.webp?v=1735339909"},{"product_id":"pentair-473715z-pressure-relief-valve","title":"Pentair 473715Z Pressure Relief Valve","description":"\u003cp\u003eReplacement pressure relief valve kit for Sta-Rite Max-E-Therm and Pentair MasterTemp (including MasterTemp 125) heaters, part 473715Z. It opens automatically to vent excess pressure and protect the heater's water circuit. OEM bronze body with female pipe-thread connection for a straightforward like-for-like swap.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52045778092345,"sku":"473715Z","price":152.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/2320\/4665\/files\/Sta_Rite_473715Z_XL.webp?v=1774283167"},{"product_id":"pentair-42001-0060s-water-pressure-switch","title":"MasterTemp Water Pressure Switch","description":"\u003cp\u003eThis low-voltage pressure switch mounts in the water system of a Pentair MasterTemp or Sta-Rite Max-E-Therm heater and signals the control board that adequate water flow is present before allowing ignition. It replaces a failed switch causing a water flow fault or fluctuating pressure readings.\u003c\/p\u003e\n\u003cp class=\"ez-section-heading\"\u003eKey Features\u003c\/p\u003e\n\u003cul class=\"ez-highlight-list\"\u003e\n  \u003cli\u003e3 psi rating\u003c\/li\u003e\n  \u003cli\u003eLow-voltage pressure switch\u003c\/li\u003e\n  \u003cli\u003eWires directly to control board\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ez-section-heading\"\u003eCompatibility\u003c\/p\u003e\n\u003cul class=\"ez-highlight-list\"\u003e\n  \u003cli\u003ePentair MasterTemp 125 pool\/spa heater\u003c\/li\u003e\n  \u003cli\u003ePentair MasterTemp 200-400 gas heater\u003c\/li\u003e\n  \u003cli\u003eSta-Rite Max-E-Therm SR-200\/333\/400\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ez-tip\"\u003eThis switch has been sold under several prior Pentair\/Sta-Rite numbers, including 3902, TDI3902 and 3903, which the old switch may still show.\u003c\/p\u003e\n\u003cp class=\"ez-warning\"\u003eDisconnect power before removing the old switch and installing the new one, as it wires directly to the heater's control board.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52046061568313,"sku":"42001-0060S","price":111.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/2320\/4665\/files\/Sta_Rite_42001-0060S_XL.webp?v=1774288319"},{"product_id":"pentair-474974-mastertemp-max-e-therm-union-kit","title":"MasterTemp Max-E-Therm Union Kit","description":"\u003cp\u003eThis 1.5\" slip x slip union kit connects plumbing to the water connections on Pentair MasterTemp 125 and Max-E-Therm pool\/spa heaters, replacing a cracked or leaking union fitting.\u003c\/p\u003e\u003cp class=\"ez-section-heading\"\u003eCompatibility\u003c\/p\u003e\u003cul class=\"ez-highlight-list\"\u003e\n\u003cli\u003eMasterTemp 125 heaters\u003c\/li\u003e\n\u003cli\u003eMasterTemp heaters (general)\u003c\/li\u003e\n\u003cli\u003eMax-E-Therm heaters\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":67619842851129,"sku":"474974","price":90.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/2320\/4665\/files\/Pentair_MasterTemp_Max_E_Therm_Union_Kit_Main.webp?v=1791424856"},{"product_id":"pentair-474989-mastertemp-125-thermal-regulator","title":"MasterTemp 125 Thermal Regulator","description":"\u003cp\u003eA replacement thermal regulator for the Pentair MasterTemp 125 heater, used in the water system of 125K BTU units to regulate temperature flow through the heater.\u003c\/p\u003e\u003cp class=\"ez-section-heading\"\u003eCompatibility\u003c\/p\u003e\u003cul class=\"ez-highlight-list\"\u003e\n\u003cli\u003eMasterTemp 125 heater water system (125K BTU heaters)\u003c\/li\u003e\n\u003cli\u003eDoes not fit Max-E-Therm\/MasterTemp thermal regulator 38000-0007S or regulator kit 77707-0010\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":67619844555065,"sku":"474989","price":76.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/2320\/4665\/files\/Pentair_MasterTemp_125_Thermal_Regulator_Main.webp?v=1791422201"},{"product_id":"pentair-474973-mastertemp-125-tubesheet-o-ring-kit","title":"MasterTemp 125 Tubesheet O-Ring Kit","description":"\u003cp\u003eThis kit contains the o-rings used to seal the coil\/tubesheet area of a Pentair MasterTemp 125 pool heater.\u003c\/p\u003e\u003cp class=\"ez-section-heading\"\u003eCompatibility\u003c\/p\u003e\u003cul class=\"ez-highlight-list\"\u003e\u003cli\u003ePentair MasterTemp 125 heater\u003c\/li\u003e\u003c\/ul\u003e\u003cp class=\"ez-tip\"\u003eReplace these o-rings when resealing the coil or header during a MasterTemp 125 servicing job, or when the tubesheet area is leaking.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":67619845931321,"sku":"474973","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/2320\/4665\/files\/Pentair_MasterTemp_125_O_Ring_Kit_Main.webp?v=1791424867"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/2320\/4665\/collections\/pentair-mastertemp-125-water-system-parts-diagram.jpg?v=1791426809","url":"https:\/\/www.ezpools.com\/collections\/pentair-mastertemp-125-water-system-replacement-parts.oembed","provider":"EZ Pools","version":"1.0","type":"link"}