Gates 21826 Radiator Coolant Hose - Lower

Reliable Radiator Coolant Hose for Chevrolet and GMC Vehicles

The Gates Molded Coolant Hose 21826 is engineered to provide dependable cooling system performance for select Chevrolet and GMC models. Designed with durable EPDM material, this radiator coolant hose ensures consistent heat resistance and flexibility for long-lasting operation.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure connections
• End 1 inside diameter: 1.75 inches (44 mm)
• End 2 inside diameter: 2.12 inches (54 mm)
• Centerline length of 21 inches (533 mm) for accurate fitment
• Compatible with Chevrolet and GMC G20, G30, P20, P30, P2500, and P3500 models
• 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-engineered hoses designed to meet exact OEM specifications. These molded hoses provide a reliable seal and consistent coolant flow, reducing the risk of leaks and overheating. The 21826 part benefits from this product line's emphasis on durability and fitment accuracy, making it suitable for heavy-duty Chevrolet and GMC vehicles.

Detailed Product Description

This radiator coolant hose is molded from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. The hose features two different inside diameters—1.75 inches (44 mm) on one end and 2.12 inches (54 mm) on the other—allowing it to connect seamlessly between components with varying sizes. With a centerline length of 21 inches (533 mm), the hose is designed to fit specific cooling system layouts in Chevrolet and GMC vans and trucks. The molded construction ensures a secure, leak-resistant fit without the need for springs or quick connect fittings.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Chevrolet G20 and G30 vans
• Restoring proper coolant flow in GMC P20 and P30 models
• Preventing coolant leaks in Chevrolet P2500 and P3500 trucks
• Addressing overheating issues caused by deteriorated hoses
• Maintaining cooling system integrity in heavy-duty applications

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to avoid burns. Verify the hose orientation matches the original part, paying attention to the differing inside diameters on each end. Use appropriate clamps to secure the hose and check for leaks after installation. The molded design simplifies alignment, but proper tightening is essential to prevent coolant loss.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21826 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction contribute to a reliable service life under normal operating conditions. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in materials and workmanship.