{"product_id":"four-seasons-91541-hvac-heater-core","title":"Four Seasons 91541 HVAC Heater Core","description":"\u003ch2\u003eReliable Heater Core Replacement for Buick, Cadillac, and Oldsmobile\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core 91541 is designed to restore efficient heating performance in select Buick, Cadillac, and Oldsmobile vehicles. Engineered with durable copper and brass materials, this heater core ensures consistent heat transfer and long-lasting operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCore dimensions: 8-1\/4 inches length, 8-5\/8 inches width, 2-1\/2 inches thickness\u003c\/li\u003e\n\u003cli\u003eConstructed from copper\/brass for enhanced thermal conductivity\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications for reliable fit and function\u003c\/li\u003e\n\u003cli\u003eIncludes two tubes: 0.625 inch and 0.750 inch diameter for proper coolant flow\u003c\/li\u003e\n\u003cli\u003eCompatible with Buick Commercial Chassis, Cadillac DeVille, Eldorado, Fleetwood, Riviera, and Oldsmobile Toronado models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFour Seasons Heater Core Product Line Overview\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core line focuses on delivering replacement cores that match or exceed original equipment standards. The Heater Core 91541 is part of this line, offering a copper\/brass construction that provides durability and efficient heat transfer. This product line is tailored to meet the specific requirements of various vehicle makes and models, ensuring proper fitment and performance.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis HVAC heater core features a core height of 8.250 inches, width of 8.625 inches, and a depth of 2.500 inches, making it suitable for precise fitment in designated vehicle models. The copper core material enhances heat exchange efficiency, while the brass components contribute to corrosion resistance. The heater core does not include adjustable pipe positioning, maintaining OEM-style installation. Tubes measuring 0.625 inch and 0.750 inch in diameter facilitate proper coolant circulation through the core.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores heating system performance in Buick Commercial Chassis and Cadillac DeVille models\u003c\/li\u003e\n\u003cli\u003eReplaces leaking or clogged heater cores in Cadillac Eldorado and Fleetwood vehicles\u003c\/li\u003e\n\u003cli\u003eSolves insufficient cabin heat problems in Oldsmobile Toronado and Riviera models\u003c\/li\u003e\n\u003cli\u003eAddresses coolant leaks inside the passenger compartment\u003c\/li\u003e\n\u003cli\u003eEliminates heater core blockages that reduce heat output\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Four Seasons Heater Core 91541 requires removal of the HVAC housing to access the core. Ensure all coolant is drained before removal to prevent spills. Verify tube diameters and core dimensions match the vehicle’s specifications for proper fit. Since this heater core does not have adjustable pipe positioning, alignment with existing hoses is critical. Follow vehicle-specific service manuals for detailed installation procedures.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Core 91541 meets or exceeds OEM standards, providing reliable performance and durability. Manufactured with high-quality copper and brass materials, this heater core is designed for long service life. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in materials and workmanship.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":52118514139317,"sku":"BBRN-91541","price":151.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_91541_Ang.jpg?v=1775161886","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-91541-hvac-heater-core","provider":"PartCatalog","version":"1.0","type":"link"}