Gates 21639 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 21639

The Gates Molded Coolant Hose 21639 is designed for reliable cooling system performance in select Dodge, Plymouth, and Pontiac vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures proper coolant flow and heat resistance for models like the Caravan, Grand Caravan, Grand Voyager, Tempest, and Voyager.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure installation
• End 1 inside diameter: 1.25 inches (32 mm)
• End 2 inside diameter: 1.5 inches (38 mm)
• Centerline length of 29.1 inches (739 mm) for accurate routing
• Contains no internal spring, ensuring smooth coolant flow
• Compatible with Dodge Caravan, Plymouth Grand Caravan, Grand Voyager, Tempest, and Voyager models

About the Molded Coolant Hose Product Line

The Gates Molded Coolant Hose line focuses on precision-molded radiator hoses designed to meet exact OEM specifications. This product line emphasizes durability and fitment accuracy, reducing the risk of leaks and coolant loss. The molded construction of part number 21639 provides a reliable seal and consistent coolant flow, essential for maintaining engine temperature in compatible Dodge, Plymouth, and Pontiac vehicles.

Detailed Product Description

The Gates Molded Coolant Hose 21639 is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. The hose features two different inside diameters—1.25 inches (32 mm) on one end and 1.5 inches (38 mm) on the other—allowing it to connect seamlessly between varying radiator and engine fittings. With a centerline length of 29.1 inches (739 mm), this molded hose is designed to fit the cooling system layout of specific Dodge Caravan, Plymouth Grand Caravan, Grand Voyager, Tempest, and Voyager models. The absence of an internal spring ensures unobstructed coolant flow, reducing the risk of blockages or pressure drops.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in Dodge Caravan and Plymouth Grand Caravan
• Addressing coolant leaks caused by hose degradation in Pontiac Tempest and Voyager models
• Restoring proper coolant circulation to prevent engine overheating
• Eliminating hose collapse or kinking issues due to flexible yet sturdy molded design
• Ensuring secure connections without quick connect fittings for reliable coolant system integrity

Installation Notes and Tips

• Verify compatibility with your vehicle’s make, model, and year before installation
• Ensure all old hose clamps and fittings are removed and cleaned prior to fitting the new hose
• Use appropriate clamps to secure both ends of the hose, matching the 1.25 inch and 1.5 inch diameters
• Inspect the cooling system for leaks after installation and during initial engine operation
• Handle the hose carefully to avoid twisting or kinking during installation

Quality Assurance and Warranty

Gates Molded Coolant Hose 21639 is manufactured to meet stringent quality standards, ensuring durability and performance under typical operating conditions. The EPDM material and molded construction provide resistance to heat, pressure, and automotive fluids. While specific warranty details may vary, Gates products generally come with a limited warranty against defects in material and workmanship. Consult product documentation or authorized sources for exact warranty terms.