Gates 21979 Radiator Coolant Hose - Upper

Overview of Gates Molded Coolant Hose 21979

The Gates Molded Coolant Hose 21979 is designed specifically for Volvo 740 and 940 models, providing reliable radiator coolant flow. Constructed from durable EPDM material, this molded radiator coolant hose ensures consistent performance under various operating conditions.

• Material: EPDM for heat and chemical resistance
• End 1 Inside Diameter: 1.22 inches (31 mm)
• End 2 Inside Diameter: 1.34 inches (34 mm)
• Centerline Length: 19.1 inches (485 mm)
• Molded design for precise fit and durability
• No spring reinforcement included
• Compatible with Volvo 740 and 940 models

Details on 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 fitment accuracy. This product line uses EPDM material known for its resistance to heat, ozone, and coolant chemicals, making it suitable for radiator applications in Volvo vehicles. The molded design of part number 21979 ensures a secure connection without the need for additional fittings or springs.

Product Description and Specifications

The Gates Molded Coolant Hose 21979 is engineered to maintain optimal coolant flow in Volvo 740 and 940 radiator systems. Its EPDM construction offers resistance to high temperatures and coolant fluids, helping to prevent leaks and hose degradation. The hose features two different inside diameters—1.22 inches (31 mm) on one end and 1.34 inches (34 mm) on the other—allowing for a precise fit between radiator components. With a centerline length of 19.1 inches (485 mm), this molded hose is designed to match the original equipment specifications for these Volvo models.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Volvo 740 and 940
• Prevention of coolant leaks caused by hose deterioration
• Restoration of proper coolant flow to avoid engine overheating
• Elimination of hose collapse or deformation under pressure
• Ensuring secure connections without the need for spring reinforcement

Installation Notes and Tips

When installing the Gates Molded Coolant Hose 21979, ensure the vehicle is cool and the cooling system is depressurized. Verify the hose orientation matches the original routing to avoid kinks or stress points. Use appropriate clamps to secure each end, matching the specified inside diameters of 1.22 inches and 1.34 inches. Avoid twisting the hose during installation to maintain the molded shape and ensure a proper seal.

Quality Assurance and Warranty

Gates manufactures the Molded Coolant Hose 21979 to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction contribute to long service life under typical operating conditions. While specific warranty details are not provided here, Gates products generally come with a limited warranty against defects in material and workmanship.