{"product_id":"four-seasons-91794-hvac-heater-core","title":"Four Seasons 91794 HVAC Heater Core","description":"\u003ch2\u003eOverview of Four Seasons Heater Core 91794\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core 91794 is designed to provide reliable heating performance for select Mazda vehicles. Engineered with copper and brass materials, this heater core ensures efficient heat transfer and durability. It is compatible with Mazda 323, MX-3, and Protege models, making it a precise replacement part for your vehicle's HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCore dimensions: 5-1\/2 inches length, 7 inches width, 1-1\/4 inches thickness\u003c\/li\u003e\n\u003cli\u003eConstructed from copper and brass for enhanced heat conductivity\u003c\/li\u003e\n\u003cli\u003eTube diameter: 0.625 inches (15.875 mm) for both inlet and outlet tubes\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications for fit and function\u003c\/li\u003e\n\u003cli\u003eNon-adjustable pipe positioning for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFour Seasons Heater Core Product Line Details\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core line focuses on delivering HVAC heater cores that meet or exceed original equipment manufacturer standards. This product line emphasizes quality materials such as copper and brass to ensure effective heat exchange and long service life. The 91794 heater core is part of this line, offering a direct fit solution for Mazda vehicles requiring dependable heating system components.\u003c\/p\u003e\u003ch2\u003eProduct Description and Specifications\u003c\/h2\u003e\u003cp\u003eThis HVAC heater core features a copper\/brass construction that provides excellent thermal conductivity and corrosion resistance. The core measures 5.5 inches in height, 7 inches in width, and 1.25 inches in depth, designed to fit precisely within the HVAC housing of compatible Mazda models. Both inlet and outlet tubes have a diameter of 0.625 inches (15.875 mm), ensuring proper coolant flow. The heater core does not include adjustable pipe positioning, which simplifies installation by maintaining OEM alignment.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores heating function in Mazda 323, MX-3, and Protege vehicles\u003c\/li\u003e\n\u003cli\u003eResolves heater core leaks causing coolant loss or interior fogging\u003c\/li\u003e\n\u003cli\u003eEliminates insufficient cabin heat due to clogged or damaged cores\u003c\/li\u003e\n\u003cli\u003ePrevents overheating issues related to faulty heater cores\u003c\/li\u003e\n\u003cli\u003eReplaces corroded or deteriorated OEM heater cores\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with Mazda 323, MX-3, or Protege before installation\u003c\/li\u003e\n\u003cli\u003eDrain the cooling system prior to heater core removal to avoid spills\u003c\/li\u003e\n\u003cli\u003eHandle the copper\/brass core carefully to prevent damage to tubes and fins\u003c\/li\u003e\n\u003cli\u003eVerify hose connections match the 0.625-inch tube diameter for a secure fit\u003c\/li\u003e\n\u003cli\u003eFollow vehicle-specific service manual instructions for HVAC disassembly and reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core 91794 meets or exceeds OEM standards, ensuring reliable performance and fitment. Manufactured with quality copper and brass materials, this heater core is built for durability and efficient heat transfer. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44617596993717,"sku":"BBRN-91794","price":88.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_91794_Ang.jpg?v=1775070887","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-91794-hvac-heater-core","provider":"PartCatalog","version":"1.0","type":"link"}