{"product_id":"dayco-87645-hvac-heater-hose-heater-to-engine-heater-to-thermostat-or-heater-to-water-pump","title":"Dayco 87645 HVAC Heater Hose - Heater To Engine, Heater To Thermostat or Heater To Water Pump","description":"\u003ch2\u003eOverview of Dayco Small I.D. Heater Hose 87645\u003c\/h2\u003e\u003cp\u003eThe Dayco Small I.D. Heater Hose 87645 is designed for reliable HVAC system performance in Ford Bronco, F-150, F-250, and F-350 models. Constructed from durable EPDM material, this dual inside diameter hose ensures proper coolant flow and temperature regulation within your vehicle's heating system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMade from high-quality EPDM rubber for heat and ozone resistance\u003c\/li\u003e\n\u003cli\u003eDual inside diameters: 5\/8 inch and 3\/4 inch for versatile fitment\u003c\/li\u003e\n\u003cli\u003eComplies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards\u003c\/li\u003e\n\u003cli\u003eBlack color for standard OEM appearance\u003c\/li\u003e\n\u003cli\u003eTrunk height of 39 1\/4 inches for precise installation length\u003c\/li\u003e\n\u003cli\u003eCompatible with Ford Bronco, F-150, F-250, and F-350 models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Small I.D. Heater Hose Product Line\u003c\/h2\u003e\u003cp\u003eThe Dayco Small I.D. Heater Hose line focuses on providing hoses with smaller inside diameters tailored for specific HVAC applications. This product line emphasizes compliance with SAE specifications to ensure durability and proper fitment in various vehicle models. The 87645 hose exemplifies this approach by offering a dual inside diameter design that accommodates different connection points within the heating system.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis HVAC heater hose is constructed from EPDM, a synthetic rubber known for its resistance to heat, ozone, and weathering, making it suitable for automotive heating systems. The dual inside diameter design features one end with a 5\/8 inch inside diameter and the other with a 3\/4 inch inside diameter, allowing it to connect different sized fittings securely. The hose meets SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses. Its black color matches OEM specifications, and the 39 1\/4 inch trunk height provides the correct length for installation in compatible Ford vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement of worn or cracked heater hoses in Ford Bronco and F-Series trucks\u003c\/li\u003e\n\u003cli\u003eResolving coolant leaks within the HVAC heating system\u003c\/li\u003e\n\u003cli\u003eMaintaining proper coolant flow to prevent engine overheating\u003c\/li\u003e\n\u003cli\u003eEnsuring secure connections between different diameter fittings\u003c\/li\u003e\n\u003cli\u003eUpgrading old hoses that do not meet SAE specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dayco Small I.D. Heater Hose 87645, ensure the hose is routed without kinks or sharp bends to maintain coolant flow. Verify that the 5\/8 inch and 3\/4 inch ends correspond correctly to the vehicle’s fittings. Use appropriate clamps to secure the hose ends firmly. Inspect surrounding components for wear or damage during installation to prevent future leaks.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDayco manufactures this heater hose to meet strict SAE standards, ensuring durability and performance in demanding automotive environments. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls to support reliable operation in Ford Bronco, F-150, F-250, and F-350 vehicles.\u003c\/p\u003e","brand":"Dayco","offers":[{"title":"Default Title","offer_id":51847577305269,"sku":"BCWL-87645","price":32.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DY_87645_Fro.jpg?v=1774728749","url":"https:\/\/www.partcatalog.com\/products\/dayco-87645-hvac-heater-hose-heater-to-engine-heater-to-thermostat-or-heater-to-water-pump","provider":"PartCatalog","version":"1.0","type":"link"}