Gates 21940 Radiator Coolant Hose - Lower or Upper - Engine To Pipe

Reliable Radiator Coolant Hose for Chevrolet and GMC Vehicles

The Gates Molded Coolant Hose 21940 is engineered to provide dependable cooling system performance for select Chevrolet and GMC trucks and SUVs. Designed with durable EPDM and plastic materials, this radiator coolant hose ensures a secure fit and long-lasting service life in demanding engine environments.

• Constructed from high-quality EPDM and plastic for heat and chemical resistance
• Molded design for precise fit and reliable sealing
• End 1 inside diameter: 1.5 inches (38 mm)
• End 2 inside diameter: 1.75 inches (44 mm)
• Centerline length: 30.7 inches (780 mm)
• Compatible with multiple Chevrolet and GMC models including Blazer, Suburban, Yukon, and various C/K series trucks
• Does not contain a spring or quick connect fittings

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-molded radiator hoses designed to meet exact OEM specifications. These hoses are engineered to maintain consistent coolant flow and resist degradation from heat and automotive fluids. The molded construction of part number 21940 ensures a secure, leak-free connection tailored for specific vehicle applications.

Product Details and Specifications

This radiator coolant hose features a molded design with no springs or quick connect fittings, providing a straightforward replacement solution. The hose measures 30.7 inches (780 mm) in centerline length, with end diameters of 1.5 inches (38 mm) and 1.75 inches (44 mm), accommodating the cooling system requirements of Chevrolet and GMC trucks and SUVs. The EPDM and plastic materials offer resistance to heat, ozone, and coolant chemicals, supporting durability under typical engine operating conditions.

Compatible Vehicles and Common Applications

• Chevrolet Blazer
• Chevrolet C35, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500
• GMC K1500, K1500 Suburban, K2500, K2500 Suburban, K3500
• Chevrolet Suburban 1500
• GMC Yukon

Issues This Radiator Coolant Hose Addresses

• Prevents coolant leaks caused by cracked or worn hoses
• Maintains proper coolant flow to avoid engine overheating
• Replaces hoses with incorrect fit or degraded materials
• Eliminates coolant contamination from hose deterioration
• Restores cooling system integrity for reliable vehicle operation

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to prevent burns. Verify hose diameters and length match the original part for proper fitment. Use appropriate clamps to secure the hose ends and check for leaks after installation. This molded hose does not include quick connect fittings or springs, so standard hose clamps are required.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21940 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. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in material and workmanship.