Gates 21850 Radiator Coolant Hose - Upper

Overview of Gates Molded Coolant Hose 21850

The Gates Molded Coolant Hose 21850 is designed specifically for Chevrolet and GMC P30 and P3500 models. Constructed from durable EPDM material, this radiator coolant hose ensures reliable performance in your vehicle's cooling system.

• Made from high-quality EPDM for heat and chemical resistance
• Molded design for precise fit and durability
• End 1 inside diameter: 1.5 inches (38 mm)
• End 2 inside diameter: 1.75 inches (44 mm)
• Centerline length: 28.8 inches (732 mm)
• Contains no spring or quick connect fittings
• Compatible with Chevrolet and GMC P30 and P3500 models

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on providing pre-formed hoses that match exact OEM specifications. This eliminates the need for bending or cutting during installation, ensuring a secure and leak-free connection. The molded construction of part number 21850 offers consistent shape and fitment, which is critical for maintaining proper coolant flow in Chevrolet and GMC P30 and P3500 vehicles.

Detailed Product Description

The Gates Molded Coolant Hose 21850 is engineered from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. This hose features a molded design with 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 between components with varying sizes. With a centerline length of 28.8 inches (732 mm), it fits precisely within the cooling system layout of Chevrolet and GMC P30 and P3500 models. The absence of springs and quick connect fittings simplifies the hose design, reducing potential failure points.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses
• Resolving coolant leaks caused by hose degradation
• Maintaining proper coolant flow to prevent engine overheating
• Restoring OEM fitment and performance in Chevrolet and GMC P30 and P3500 cooling systems
• Eliminating hose collapse or kinking due to molded design

Installation Notes and Tips

Before installing the Gates Molded Coolant Hose 21850, ensure the engine is cool to avoid burns. Drain the coolant system to prevent spills. Verify the hose orientation matches the molded shape for proper fit. Use appropriate clamps to secure each end, matching the specified inside diameters of 1.5 inches and 1.75 inches. Inspect adjacent components for wear or damage during installation to maintain system integrity.

Quality Assurance and Warranty

Gates manufactures the Molded Coolant Hose 21850 to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction provide resistance to heat, pressure, and automotive fluids. While specific warranty details are not provided here, Gates typically offers coverage against defects in materials and workmanship. Consult product documentation or Gates directly for warranty terms related to this part.