Dayco 71989 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71989

The Dayco Curved Radiator Hose 71989 is designed to provide reliable coolant flow for select GM vehicles. Engineered with durable EPDM material and a protective sleeve, this radiator coolant hose supports efficient engine cooling in Cadillac, Chevrolet, GMC, and Hummer models.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Black color with a curved design for precise fitment
• Single inside diameter hose with 1 5/16 inch ends on both sides
• Includes a protective sleeve for added durability
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 25 for proper clearance and installation

Details on the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on delivering hoses shaped to fit specific radiator and engine configurations. This product line ensures proper coolant flow and fitment by using curved designs that match OEM specifications. The 71989 hose is part of this line, providing a tailored solution for various GM trucks and SUVs requiring a curved radiator coolant hose.

Product Description and Attributes

This radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, making it suitable for demanding engine environments. Both ends of the hose have an inside diameter of 1 5/16 inches, ensuring compatibility with corresponding radiator and engine fittings. The hose features a protective sleeve to guard against abrasion and wear, although it does not include a heat shield. Its single inside diameter design simplifies installation and maintenance.

Compatible Vehicles and Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500, Silverado 1500/2500/3500, Suburban 1500/2500, Tahoe
• GMC Sierra 1500/2500/3500, Sierra 1500 HD/2500 HD, Yukon, Yukon XL 1500/2500
• Hummer H2

This hose is intended for use in cooling system repairs or replacements where a curved radiator coolant hose with these specifications is required.

Common Issues Addressed by Dayco Radiator Hose 71989

• Cracked or leaking radiator hoses causing coolant loss
• Swollen or softened hoses due to heat degradation
• Improper fitment from generic or straight hoses
• Wear from abrasion without protective sleeve
• Coolant system overheating due to hose failure

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to prevent burns. Verify the inside diameter and curvature match the original hose to maintain proper coolant flow. Use appropriate clamps and check for leaks after installation. The protective sleeve on this hose helps reduce abrasion during routing, but avoid contact with sharp edges or moving parts.

Quality Assurance and Warranty

Dayco manufactures this radiator coolant hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to maintain durability and performance.