Dayco 72978 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 72978

The Dayco Curved Radiator Hose 72978 is designed specifically for the Infiniti Q50, providing reliable coolant flow and engine temperature regulation. Made from durable EPDM material, this black radiator coolant hose ensures consistent performance under demanding conditions.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black color with a curved design for precise fitment
• End 1 and End 2 inside diameter: 1 5/16 inches
• End 1 and End 2 outside diameter: 1 21/32 inches
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Single inside diameter hose type for streamlined coolant flow
• Compatible with Infiniti Q50 models

Detailed Product Description

The Dayco Curved Radiator Hose 72978 is engineered to meet the cooling system requirements of the Infiniti Q50. Its EPDM construction offers excellent resistance to heat, ozone, and coolant chemicals, ensuring durability and longevity. The hose features a curved design that matches the original equipment specifications, facilitating a secure and leak-free connection between radiator components. Both ends have an inside diameter of 1 5/16 inches and an outside diameter of 1 21/32 inches, making it a precise replacement part. This hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive cooling systems.

Applications and Problem Solving

• Replaces worn or cracked radiator coolant hoses on Infiniti Q50 vehicles
• Prevents coolant leaks that can cause engine overheating
• Restores proper coolant flow for efficient engine temperature control
• Eliminates hose swelling or softening due to heat exposure
• Addresses fitment issues with curved radiator hose replacements

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to avoid burns. Inspect hose clamps and radiator fittings for corrosion or damage and replace if necessary. Confirm that the hose orientation matches the original to maintain proper coolant flow. Tighten clamps securely to prevent leaks but avoid over-tightening, which can damage the hose ends.

Quality Assurance

Dayco's Curved Radiator Hose line, including part number 72978, adheres to strict SAE specifications to guarantee performance and reliability. Manufactured with EPDM material, this hose resists heat and chemical degradation common in automotive cooling systems. While specific warranty details are not provided, Dayco products are known for meeting industry standards and quality benchmarks.