Gates 21191 Radiator Coolant Hose - Upper

Reliable Radiator Coolant Hose for Chevrolet and GMC Vehicles

The Gates Molded Coolant Hose 21191 is engineered to provide dependable cooling system performance for select Chevrolet and GMC models. Designed with precision molding and durable EPDM material, this radiator coolant hose ensures a secure fit and long-lasting service life.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and leak prevention
• End 1 inside diameter: 1.25 inches (32 mm)
• End 2 inside diameter: 1.5 inches (38 mm)
• Centerline length: 38.6 inches (980 mm)
• Compatible with multiple Chevrolet and GMC models including Astro, Blazer, Suburban, Tahoe, Yukon, and more
• Does not contain a spring or quick connect fittings

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on delivering hoses that are precisely shaped to match original equipment specifications. This molded construction reduces the risk of leaks and improves installation accuracy. The 21191 part benefits from this product line's emphasis on durability and fitment, making it suitable for various Chevrolet and GMC trucks and SUVs.

Detailed Product Description

This radiator coolant hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. The molded design ensures the hose maintains its shape and fits securely between the radiator and engine components. With a centerline length of 38.6 inches (980 mm), and differing inside diameters on each end (1.25 inches/32 mm and 1.5 inches/38 mm), it accommodates specific coolant flow requirements. The absence of springs and quick connect fittings indicates a straightforward installation process compatible with the original vehicle setup.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses on Chevrolet Astro and GMC Safari
• Resolving coolant leaks in Chevrolet Suburban 1500 and GMC Yukon cooling systems
• Maintaining proper coolant flow in Chevrolet K1500 and GMC C2500 trucks
• Preventing overheating caused by deteriorated or collapsed hoses in Chevrolet Tahoe and GMC Blazer
• Ensuring reliable cooling system performance in GMC P30 and Chevrolet G30 vans

Installation Notes and Tips

Before installation, ensure the engine is cool to avoid injury from hot coolant. Verify hose dimensions and fitment against your vehicle’s specifications. Use appropriate clamps to secure the hose ends firmly without over-tightening, which can damage the hose. Inspect surrounding components for wear or damage during replacement to maintain overall cooling system integrity.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21191 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction contribute to a reliable, long-lasting replacement part. Warranty details should be confirmed with the supplier or manufacturer, as they may vary.