Gates 21189 Radiator Coolant Hose - Lower or Upper

Overview of Gates Molded Coolant Hose 21189

The Gates Molded Coolant Hose 21189 is designed for reliable cooling system performance in select Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent coolant flow and heat resistance for models like the Chevrolet C1500 and Pontiac Grand Prix.

• Constructed from high-quality EPDM for heat and chemical resistance
• Molded design for precise fit and secure installation
• End 1 and End 2 inside diameters both measure 1.25 inches (32 mm)
• Centerline length of 32.3 inches (820 mm) for accurate routing
• Contains no internal spring, ensuring smooth coolant flow
• Compatible with multiple GM makes and models from the late 1990s

Detailed Product Description

The Gates Molded Coolant Hose 21189 is a molded radiator coolant hose made from EPDM (ethylene propylene diene monomer) rubber, known for its excellent resistance to heat, ozone, and coolant chemicals. This hose features a consistent inside diameter of 1.25 inches (32 mm) on both ends, facilitating a secure connection to the cooling system components. With a centerline length of 32.3 inches (820 mm), it is designed to fit specific vehicle applications without the need for modification. The molded construction ensures a precise shape that matches original equipment specifications, improving installation accuracy and reducing the risk of leaks. This hose does not contain an internal spring, which helps maintain smooth coolant flow and reduces turbulence within the cooling system.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with a range of GM vehicles, including Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models. Notable compatible vehicles include the Chevrolet C1500 and C2500 trucks, Buick LeSabre and Century, Pontiac Bonneville and Grand Prix, Oldsmobile Cutlass and 98, and GMC K1500 and K2500. The part number 21189 is specifically designed to meet the cooling system requirements of these models, ensuring proper fit and function.

Common Cooling System Issues Addressed

• Replacement of cracked or leaking radiator coolant hoses
• Resolving coolant flow restrictions caused by collapsed or damaged hoses
• Preventing overheating due to compromised hose integrity
• Eliminating coolant leaks that can lead to engine damage
• Restoring proper coolant circulation in aging or worn cooling systems

Installation Notes and Tips

• Ensure the engine is cool before removing the old hose to avoid burns
• Inspect hose connections and clamps for corrosion or damage and replace if necessary
• Use proper tools to avoid damaging hose ends during installation
• Verify the hose routing matches the original to prevent kinks or interference
• Check for leaks after installation by running the engine and monitoring coolant flow

Quality Assurance and Warranty

The Gates Molded Coolant Hose 21189 is manufactured to meet or exceed OEM specifications for durability and performance. Gates is a recognized brand in automotive cooling components, known for rigorous quality control. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in materials and workmanship. For warranty information, consult the product packaging or manufacturer documentation.

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line from Gates focuses on precision-molded hoses designed to replicate original equipment shapes and dimensions. This product line emphasizes durability and fitment accuracy, using EPDM material to withstand the thermal and chemical demands of modern cooling systems. The molded design reduces installation time and improves sealing performance, making it suitable for a variety of GM vehicles requiring reliable radiator coolant hoses.