{"product_id":"gates-18021-hvac-heater-hose","title":"Gates 18021 HVAC Heater Hose","description":"\u003ch2\u003eGates Molded Heater Hose 18021 Overview\u003c\/h2\u003e\u003cp\u003eThe Gates 18021 molded heater hose is an OEM-style coolant hose built for tight engine bays and factory routing. With a small 8 mm inside diameter at both ends and a 396 mm centerline length, it supports precise fitment in heater, coolant, water, and air applications.\u003c\/p\u003e\u003cp\u003eCompatible With select Honda, Toyota, Acura, Nissan, Hyundai, Kia, Lexus, Mazda, and Mitsubishi applications, this molded hose follows the shape needed for crowded engine compartments. The Gates Molded Heater Hose line is made for direct-routing replacement where a straight hose will not match the original path.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGates Molded Heater Hose, part number 18021\u003c\/li\u003e\n\u003cli\u003eFactory-molded, OE-style shape for tighter engine compartments\u003c\/li\u003e\n\u003cli\u003eEPDM construction for coolant and heater service\u003c\/li\u003e\n\u003cli\u003e8 mm inside diameter at both ends\u003c\/li\u003e\n\u003cli\u003e396 mm centerline length for routed applications\u003c\/li\u003e\n\u003cli\u003eApproved for marine applications\u003c\/li\u003e\n\u003cli\u003eCross-reference example: Bosch 18021\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis molded coolant hose is built to replace formed heater hose routing where exact bends matter. The EPDM material is suited for coolant transfer and other fluid or air routing needs, while the molded profile helps maintain the original hose path in applications such as a 1994-2001 Acura Integra intake manifold to pipe-1, a 1991-1995 Toyota MR2 engine to pipe-3, or a 1999-2001 Honda CR-V pipe-3 to pipe-4. The Gates 18021 is also listed for vehicles including the 2002-2005 Hyundai XG350 and 2004 Kia Amanti in throttle-body-related coolant routing.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCracked or hardened molded heater hose sections\u003c\/li\u003e\n\u003cli\u003eCoolant leaks at formed hose routing points\u003c\/li\u003e\n\u003cli\u003eIncorrect hose shape after prior repairs\u003c\/li\u003e\n\u003cli\u003eRestricted fitment in compact engine compartments\u003c\/li\u003e\n\u003cli\u003eReplacement needs for heater, coolant, water, or air routing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify end diameter, centerline length, and routing before installation. This hose is molded, so compare the original bend profile and connection points on the vehicle before removal. Confirm the exact application for your Honda Civic del Sol, Toyota 4Runner, or Acura Integra by matching the listed position and hose path. Use proper coolant service procedures and inspect adjoining clamps, pipes, and fittings for wear before reassembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eGates Molded Heater Hose products are built to OE-style dimensions and routing requirements for service replacement use. Part number 18021 is listed across multiple interchange references and vehicle applications for consistent fit verification.\u003c\/p\u003e","brand":"Gates","offers":[{"title":"Default Title","offer_id":45303954407605,"sku":"BBSC-18021","price":28.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/ZO_18021_Fro_fa411ccb-a00b-4b15-a5a5-8d17f2a646d7.jpg?v=1775145680","url":"https:\/\/www.partcatalog.com\/products\/gates-18021-hvac-heater-hose","provider":"PartCatalog","version":"1.0","type":"link"}