{"product_id":"four-seasons-90791-hvac-heater-core-front","title":"Four Seasons 90791 HVAC Heater Core - Front","description":"\u003ch2\u003eOverview of Four Seasons Heater Core 90791 for Toyota 4Runner\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core 90791 is designed specifically for Toyota 4Runner models, providing reliable heating performance. This aluminum heater core ensures efficient heat transfer and durability for your vehicle's HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCore dimensions: 8-5\/8 inches length, 6-1\/2 inches width, 1-1\/4 inches thickness\u003c\/li\u003e\n\u003cli\u003eConstructed from lightweight, corrosion-resistant aluminum\u003c\/li\u003e\n\u003cli\u003eCore depth of 1.25 inches and height of 8.625 inches for precise fitment\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 Toyota 4Runner heater cores\u003c\/li\u003e\n\u003cli\u003eNon-adjustable pipe positioning for direct replacement\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 durable and efficient heating components for automotive HVAC systems. The 90791 model is part of this line, featuring aluminum construction that balances heat transfer efficiency with corrosion resistance. This product line is engineered to meet or exceed original equipment manufacturer standards, ensuring compatibility and performance for Toyota 4Runner vehicles.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core 90791 is an aluminum heater core designed to replace the factory unit in Toyota 4Runner models. Its core dimensions—8-5\/8 inches in length, 6-1\/2 inches in width, and 1-1\/4 inches in thickness—allow for a precise fit within the vehicle’s HVAC housing. The aluminum core material offers effective heat conduction while resisting corrosion, which helps maintain long-term functionality. Both inlet and outlet tubes measure 0.625 inches (15.875 mm) in diameter, matching OEM specifications for seamless integration. The heater core does not feature adjustable pipe positioning, making it a direct replacement part that simplifies installation.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores heating performance in Toyota 4Runner HVAC systems\u003c\/li\u003e\n\u003cli\u003eResolves coolant leaks within the heater core assembly\u003c\/li\u003e\n\u003cli\u003eEliminates reduced cabin heat output due to clogged or damaged cores\u003c\/li\u003e\n\u003cli\u003ePrevents overheating caused by inefficient heat exchange\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\u003cp\u003eWhen installing the Four Seasons Heater Core 90791, ensure the vehicle’s cooling system is properly drained to avoid spills. Verify that the core dimensions match the original part to guarantee fitment. Since pipe positioning is fixed, no adjustments are necessary during installation. It is recommended to inspect and replace any worn hoses or seals to prevent future leaks. Follow Toyota 4Runner service manual guidelines for safe and correct installation procedures.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThis Four Seasons heater core meets or exceeds OEM standards for fit, form, and function, providing reliable heating performance for Toyota 4Runner vehicles. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in materials and workmanship. Refer to the manufacturer’s warranty documentation for complete terms and conditions.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":52118513713333,"sku":"BBRN-90791","price":74.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_90791_Fro.jpg?v=1775161882","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-90791-hvac-heater-core-front","provider":"PartCatalog","version":"1.0","type":"link"}