Gates 21237 Radiator Coolant Hose - Upper

Overview of Gates Molded Coolant Hose 21237

The Gates Molded Coolant Hose 21237 is engineered for reliable cooling system performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed with durable EPDM material, this radiator coolant hose ensures consistent coolant flow and heat resistance for models like the Bonneville, Malibu, and Monte Carlo.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure connections
• Centerline length of 34.8 inches (884 mm) for accurate routing
• Inside diameter of 1.5 inches (38 mm) on both ends for standard coolant flow
• Compatible with multiple GM makes and models including Buick LeSabre and Pontiac Grand Prix

Detailed Product Description

This radiator coolant hose from Gates is part of the Molded Coolant Hose line, which focuses on delivering hoses that are pre-formed to match specific vehicle applications. The molded construction eliminates the need for bending or shaping during installation, reducing the risk of kinks or leaks. Made from EPDM, the hose resists degradation from heat, ozone, and automotive fluids, ensuring durability and longevity in the cooling system.

The hose features a centerline length of 34.8 inches (884 mm) and an inside diameter of 1.5 inches (38 mm) on both ends, providing a consistent and reliable coolant path. It does not contain any springs or quick connect fittings, simplifying the installation process and maintaining a straightforward design.

Compatible Vehicles and Applications

• Buick models including LeSabre, Century, and Riviera
• Chevrolet models such as Malibu, Monte Carlo, and El Camino
• Oldsmobile models including Cutlass, Cutlass Supreme, and Delta 88
• Pontiac models like Grand Prix, Catalina, and Skylark

This hose is designed specifically for radiator coolant circulation, helping to maintain optimal engine temperature and prevent overheating.

Common Issues Addressed by This Radiator Coolant Hose

• Replacement of cracked or leaking radiator hoses
• Restoring proper coolant flow to prevent engine overheating
• Eliminating hose collapse or kinking due to aging or improper fit
• Upgrading worn or brittle hoses to improve cooling system reliability
• Ensuring compatibility with original equipment specifications for GM vehicles

Installation Notes and Tips

Before installation, ensure the engine is cool to avoid burns from hot coolant. Verify hose dimensions and fitment against your vehicle’s specifications. The molded design of the Gates 21237 hose allows for direct replacement without modification. Use appropriate clamps to secure the hose ends and check for leaks after installation. Regular inspection of coolant hoses is recommended to maintain system integrity.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21237 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material provides resistance to heat, ozone, and automotive fluids, contributing to a longer service life. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Buick, Chevrolet, Oldsmobile, and Pontiac vehicles.