Gates 21778 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 21778

The Gates Molded Coolant Hose 21778 is designed specifically for Mercedes-Benz vehicles including the 260E, 300CE, 300E, and 300TE 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
• Centerline length of 14.8 inches (376 mm) for exact replacement
• Inside diameter of 1.34 inches (34 mm) on both ends
• Does not contain a spring or quick connect fittings

Detailed Product Description

The Gates Molded Coolant Hose 21778 is engineered to meet the specifications required by Mercedes-Benz 260E, 300CE, 300E, and 300TE models. Its EPDM construction offers excellent resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in radiator cooling systems. The molded design ensures a precise fit, reducing the risk of leaks and improving overall system reliability. With a centerline length of 14.8 inches (376 mm) and consistent inside diameters of 1.34 inches (34 mm) on both ends, this hose provides a direct replacement for the original part.

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on delivering hoses that are pre-formed to exact OEM specifications. This eliminates the need for bending or shaping during installation, ensuring a secure and leak-free connection. The molded design also enhances durability by reducing stress points commonly found in flexible hoses. The 21778 part is a representative example of this product line, tailored for specific Mercedes-Benz models.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses
• Prevention of coolant leaks that can cause engine overheating
• Restoration of proper coolant flow in Mercedes-Benz 260E, 300CE, 300E, and 300TE
• Elimination of hose collapse or deformation under pressure
• Addressing coolant hose failures due to aging or chemical degradation

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns. Verify that the hose dimensions match the original part, specifically the 1.34 inch (34 mm) inside diameters and 14.8 inch (376 mm) centerline length. Use appropriate clamps to secure the hose ends and check for leaks after installation. Avoid twisting or stretching the hose during fitting to maintain the molded shape and integrity.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21778 is manufactured to meet strict quality standards for durability and performance. The EPDM material and molded construction contribute to long service life under normal operating conditions. Warranty details should be confirmed with the parts distributor or manufacturer documentation.