Dayco 71078 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71078

The Dayco Curved Radiator Hose 71078 is designed to provide reliable coolant flow for a range of vehicles including Buick, Chevrolet, Chrysler, Dodge, GMC, Isuzu, Oldsmobile, Plymouth, and Saab models. Engineered with durable EPDM material, this dual inside diameter hose ensures a secure fit and efficient cooling system performance.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Dual inside diameters: 1 1/4 inch and 1 3/8 inch for precise fitment
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color for standard OEM appearance
• Trunk height of 9 1/4 inches to accommodate curved radiator connections

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line is specifically designed to meet the demands of modern cooling systems requiring hoses with precise bends and dual inside diameters. This product line focuses on delivering hoses that maintain coolant flow integrity while fitting complex radiator and engine configurations. The 71078 part number is a representative model within this line, offering compatibility with multiple vehicle makes and models.

Detailed Product Description

The Dayco 71078 radiator coolant hose is manufactured from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. This hose features a dual inside diameter design, with one end measuring 1 1/4 inches and the other 1 3/8 inches, allowing it to connect different sized radiator fittings securely. The hose’s curved shape and 9 1/4 inch trunk height accommodate specific radiator layouts found in vehicles such as the Chevrolet Trailblazer, GMC Envoy, and Chrysler Town & Country. It does not include a heat shield or protective sleeve, focusing on core durability and fitment.

Common Applications and Problem Solving

• Replacement for cracked or leaking radiator coolant hoses
• Restores proper coolant flow in Buick LeBaron and Oldsmobile New Yorker cooling systems
• Addresses hose swelling or softening due to heat exposure
• Prevents coolant leaks in Dodge Aries and Plymouth Reliant models
• Ensures secure connections in Saab 9-7x and Isuzu Bravada radiator assemblies

Installation Notes and Tips

• Verify hose dimensions and fitment against vehicle specifications before installation
• Ensure all clamps are properly tightened to prevent leaks
• Inspect radiator and engine fittings for corrosion or damage prior to hose installation
• Replace coolant and bleed the system after hose installation to avoid air pockets
• Use appropriate tools to avoid damaging the hose during installation

Quality Assurance and Warranty

Dayco manufactures the 71078 radiator hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. The EPDM material and construction provide durability under typical operating conditions. Warranty details should be confirmed with the original equipment manufacturer or supplier.