Gates 21736 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 21736

The Gates Molded Coolant Hose 21736 is designed for reliable cooling system performance in select Ford and Mazda vehicles. Engineered with durable EPDM and plastic materials, this radiator coolant hose ensures proper coolant flow and system integrity for models like the Ford Explorer and Mazda Navajo.

• Constructed from EPDM and plastic for heat and chemical resistance
• Molded design for precise fit and secure connections
• End 1 inside diameter: 1.44 inches (37 mm)
• End 2 inside diameter: 1.5 inches (38 mm)
• Centerline length of 19.2 inches (488 mm)
• Compatible with Ford B4000, Bronco II, Explorer, Ranger, and Mazda Navajo
• Part number 21736 for accurate identification

Details on the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-engineered radiator hoses that are molded to exact specifications. This approach eliminates the need for multiple hose clamps and reduces the risk of leaks by providing a consistent shape and fit. The 21736 hose benefits from this design philosophy, offering a reliable replacement part that matches OEM dimensions and material standards.

Product Description and Specifications

This radiator coolant hose features a molded construction using EPDM rubber and plastic components, materials known for their resistance to heat, ozone, and coolant chemicals. The hose has two different inside diameters at each end—1.44 inches (37 mm) and 1.5 inches (38 mm)—to accommodate specific radiator and engine connections. With a centerline length of 19.2 inches (488 mm), it fits the cooling system layout of compatible Ford and Mazda models without modification. The hose does not contain any springs or quick connect fittings, simplifying installation and maintenance.

Common Applications and Problem Solving

• Replacement of cracked or leaking radiator coolant hoses
• Restoring proper coolant flow in Ford Explorer and Mazda Navajo cooling systems
• Addressing hose swelling or softening due to heat exposure
• Eliminating coolant leaks caused by deteriorated or misshapen hoses
• Ensuring secure coolant system connections without additional clamps

Installation Notes and Tips

Before installation, verify the part number 21736 matches your vehicle’s requirements. Ensure the engine is cool and the cooling system is depressurized. Remove the old hose carefully to avoid damaging radiator or engine fittings. The molded design of this hose allows for a direct replacement without trimming or modification. Use appropriate tools to secure hose ends if clamps are required, although the molded shape often provides a tight fit. Inspect all connections for leaks after installation and during initial engine operation.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21736 is manufactured to meet or exceed OEM standards for durability and performance. The use of EPDM and plastic materials ensures resistance to heat and coolant chemicals, contributing to long service life. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.