Gates 20931 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 20931

The Gates Molded Coolant Hose 20931 is designed for reliable cooling system performance in select Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures proper coolant flow and heat dissipation for models like the S10, Jimmy, Bravada, and Nova.

• Constructed from high-quality EPDM for heat and chemical resistance
• Molded design for precise fit and leak prevention
• End 1 inside diameter: 1.5 inches (38 mm)
• End 2 inside diameter: 1.75 inches (44 mm)
• Centerline length of 16.5 inches (419 mm)
• Contains no internal spring for flexibility
• Compatible with multiple GM vehicle models

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on delivering hoses that are pre-formed to exact specifications, reducing installation time and improving sealing performance. This product line uses EPDM material known for its resistance to heat, ozone, and coolant chemicals, making it suitable for radiator applications in various GM vehicles. The molded construction of part number 20931 ensures a secure fit without the need for additional modifications.

Detailed Product Description

The Gates Molded Coolant Hose 20931 is a radiator coolant hose designed to maintain optimal engine temperature by facilitating coolant flow between the radiator and engine components. Its EPDM construction offers durability against high temperatures and exposure to automotive fluids. The hose features two different inside diameters—1.5 inches (38 mm) on one end and 1.75 inches (44 mm) on the other—allowing it to connect seamlessly with corresponding fittings. With a centerline length of 16.5 inches (419 mm), it fits specific GM models including the Chevrolet S10 Blazer, GMC Jimmy, Pontiac Phoenix, and Buick Skylark.

Common Applications and Problem Solving

• Replacement for cracked or leaking radiator coolant hoses
• Restores proper coolant flow to prevent engine overheating
• Eliminates coolant leaks caused by hose deterioration
• Addresses fitment issues with non-molded or generic hoses
• Prevents coolant contamination from hose material breakdown

Installation Notes and Tips

• Ensure engine is cool before removing the old hose
• Check hose connections for corrosion or damage before installation
• Use proper clamps to secure the hose ends without over-tightening
• Verify the hose routing matches original configuration to avoid kinks
• Inspect the cooling system for leaks after installation

Quality Assurance and Warranty

Gates Molded Coolant Hose 20931 is manufactured to meet OEM specifications for durability and performance. The EPDM material and molded design contribute to long service life under normal operating conditions. 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 manufacturer resources for exact warranty terms.