{"product_id":"gates-21659-radiator-coolant-hose-upper","title":"Gates 21659 Radiator Coolant Hose - Upper","description":"\u003ch2\u003eReliable Radiator Coolant Hose for Chevrolet and GMC Vehicles\u003c\/h2\u003e\u003cp\u003eThe Gates Molded Coolant Hose 21659 is engineered to provide a durable and precise fit for select Chevrolet and GMC models. Designed with quality EPDM material, this radiator coolant hose ensures efficient coolant flow and long-lasting performance in demanding engine environments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from high-quality EPDM material for heat and chemical resistance\u003c\/li\u003e\n\u003cli\u003eMolded design for exact fit and secure installation\u003c\/li\u003e\n\u003cli\u003eEnd 1 inside diameter: 1.26 inches (32 mm)\u003c\/li\u003e\n\u003cli\u003eEnd 2 inside diameter: 1.5 inches (38 mm)\u003c\/li\u003e\n\u003cli\u003eCenterline length: 29.4 inches (747 mm)\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet and GMC R20, R20 Suburban, R30, R2500, R2500 Suburban, R3500, V20 Suburban, V30, and V3500 models\u003c\/li\u003e\n\u003cli\u003eDoes not contain a spring or quick connect fittings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Gates Molded Coolant Hose Product Line\u003c\/h2\u003e\u003cp\u003eThe Molded Coolant Hose line by Gates focuses on precision-engineered hoses that are molded to exact specifications for specific vehicle applications. This approach ensures a reliable seal and fitment, reducing the risk of leaks and premature wear. The molded construction of part number 21659 supports consistent coolant flow and durability under typical operating conditions for Chevrolet and GMC trucks and SUVs.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Gates 21659 radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids. Its molded design eliminates the need for additional clamps or fittings, providing a secure connection between the radiator and engine cooling system. With a centerline length of 29.4 inches (747 mm), this hose is tailored to fit specific Chevrolet and GMC models, including R20 and R2500 series trucks and Suburban variants. The hose features two different inside diameters—1.26 inches (32 mm) on one end and 1.5 inches (38 mm) on the other—to accommodate varying connection points within the cooling system.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement of worn or cracked radiator coolant hoses\u003c\/li\u003e\n\u003cli\u003ePrevention of coolant leaks that can lead to engine overheating\u003c\/li\u003e\n\u003cli\u003eRestoration of proper coolant flow in Chevrolet and GMC R20 and R2500 models\u003c\/li\u003e\n\u003cli\u003eAddressing hose swelling or softening due to heat exposure\u003c\/li\u003e\n\u003cli\u003eEnsuring secure connections without the need for springs or quick connect fittings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eBefore installation, ensure the engine is cool to avoid injury from hot coolant. Inspect the radiator and engine fittings for corrosion or damage. The molded design of the Gates 21659 hose allows for straightforward installation without additional clamps or springs. Verify that the hose is properly seated on both ends to prevent leaks. It is recommended to replace any worn clamps or seals during installation to maintain system integrity.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eGates manufactures the Molded Coolant Hose 21659 to meet or exceed OEM specifications for durability and performance. The EPDM material and molded construction provide resistance to heat, pressure, and automotive fluids. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in material and workmanship. Consult the product packaging or manufacturer for exact warranty terms.\u003c\/p\u003e","brand":"Gates","offers":[{"title":"Default Title","offer_id":51991370825909,"sku":"BBSC-21659","price":35.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/ZO_21659_Fro.jpg?v=1775163734","url":"https:\/\/www.partcatalog.com\/products\/gates-21659-radiator-coolant-hose-upper","provider":"PartCatalog","version":"1.0","type":"link"}