Gates 21420 Radiator Coolant Hose - Lower, Lower - Engine To Pipe or Lower - Pipe To Radiator

Overview of Gates Molded Coolant Hose 21420

The Gates Molded Coolant Hose 21420 is engineered for reliable radiator coolant transfer in various vehicle applications. Constructed from durable EPDM material, this molded hose ensures consistent performance under demanding engine conditions.

• Made from high-quality EPDM for heat and chemical resistance
• Molded design for precise fit and leak prevention
• Contains internal spring reinforcement for shape retention
• End 1 and End 2 inside diameters both measure 3 inches (76 mm)
• Centerline length of 9.7 inches (246 mm) for accurate fitment
• Zero branch quantity and no quick connect fittings for straightforward installation

Detailed Product Description

The Gates Molded Coolant Hose 21420 is part of the Molded Coolant Hose product line, which focuses on delivering hoses with exact molded shapes to match specific radiator and engine configurations. This hose is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in automotive cooling systems. The molded construction ensures a precise fit, reducing the risk of leaks and improving coolant flow efficiency. Additionally, the internal spring reinforcement helps maintain hose shape and prevents collapse under vacuum or pressure fluctuations.

Applications and Problem Solving

• Replaces worn or cracked radiator coolant hoses in compatible vehicles
• Prevents coolant leaks caused by hose deformation or aging
• Maintains proper coolant flow to avoid engine overheating
• Resists damage from heat and chemical exposure in engine compartments
• Supports stable coolant system pressure with internal spring reinforcement

Installation Notes and Tips

Ensure the vehicle’s cooling system is cool before removing the old hose. Verify that the 3-inch (76 mm) inside diameter and 9.7-inch (246 mm) centerline length match the original hose specifications. The molded shape of the Gates 21420 hose requires proper alignment during installation to avoid kinks or stress points. Use appropriate clamps to secure each end firmly without over-tightening, which could damage the hose.

Quality Assurance and Warranty

Gates is a recognized manufacturer of automotive hoses with stringent quality control standards. The Molded Coolant Hose 21420 is designed to meet or exceed OEM specifications for durability and performance. While specific warranty details are not provided, Gates products typically come with manufacturer-backed warranties covering defects in materials and workmanship.