Gates 21978 Radiator Coolant Hose - Upper

Overview of Gates Molded Coolant Hose 21978

The Gates Molded Coolant Hose 21978 is designed for reliable cooling system performance in select Chevrolet, GMC, and Oldsmobile vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent coolant flow and heat resistance for models like the Chevrolet S10 Blazer and GMC Jimmy.

• Constructed from high-quality EPDM for heat and chemical resistance
• Molded design for precise fit and durability
• Centerline length of 28.7 inches (729 mm) for accurate installation
• Inside diameter of 1.27 inches (32 mm) on both ends
• Compatible with Chevrolet Bravada, GMC Jimmy, Oldsmobile S10, S10 Blazer, and Sonoma

Detailed Product Description

This radiator coolant hose from Gates is part of the Molded Coolant Hose product line, which focuses on delivering hoses that are pre-formed to exact specifications for a secure and leak-free fit. The molded construction eliminates the need for additional shaping during installation, reducing the risk of kinks or improper coolant flow. Made from EPDM, the hose resists degradation from heat, ozone, and automotive fluids, ensuring long service life in demanding engine environments.

The hose features a consistent inside diameter of 1.27 inches (32 mm) on both ends, providing uniform coolant flow. With a centerline length of 28.7 inches (729 mm), it fits precisely within the cooling system layout of compatible vehicles. This part does not contain any springs or quick connect fittings, simplifying its integration into existing systems.

Compatible Vehicles and Applications

• Chevrolet Bravada radiator coolant hose replacement
• GMC Jimmy cooling system hose upgrade
• Oldsmobile S10 and S10 Blazer coolant hose repair
• GMC Sonoma radiator hose maintenance

Installation Notes and Tips

• Ensure the cooling system is fully drained before removing the old hose
• Check hose clamps and replace if worn to prevent leaks
• Verify the hose orientation matches the molded shape for proper fit
• Inspect surrounding components for wear or damage during installation

Quality Assurance and Warranty

Gates Molded Coolant Hose 21978 is manufactured to meet or exceed OEM specifications for durability and performance. The EPDM material and molded design contribute to a reliable cooling system component. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support long-term use in Chevrolet, GMC, and Oldsmobile vehicles.