Dayco 70785 Engine Coolant Bypass Hose

Overview of Dayco Curved Radiator Hose 70785

The Dayco Curved Radiator Hose 70785 is engineered for reliable engine coolant bypass in select Chevrolet and GMC trucks and SUVs. Designed with durable EPDM material, this black single inside diameter hose ensures consistent performance under typical operating conditions.

• Constructed from EPDM for heat and chemical resistance
• Black color with 5/8 inch inside diameter on both ends
• Single inside diameter hose type for streamlined coolant flow
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 4 1/2 inches for precise fitment

Detailed Product Description

The Dayco Curved Radiator Hose line focuses on providing reliable coolant hose solutions tailored to specific vehicle applications. The 70785 model is a curved engine coolant bypass hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. This hose features a consistent 5/8 inch inside diameter on both ends, facilitating efficient coolant circulation within the engine system. It does not include a heat shield or protective sleeve, which is typical for this hose type and application. The hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for coolant hoses in automotive use.

Compatible Vehicles and Applications

This hose is compatible with a range of Chevrolet and GMC models, including C10, C20, C20 Suburban, C30, C1500, C2500, C2500 Suburban, C3500, G20, G30, K10, K20, K20 Suburban, K30, K1500, K2500, K2500 Suburban, K3500, P10, P20, P30, P1500, P2500, P3500, R20, R30, R2500, R3500, V20, V30, V2500, and V3500. The Dayco 70785 hose is designed to replace the engine coolant bypass hose in these vehicles, maintaining proper coolant flow and engine temperature regulation.

• Replaces worn or cracked engine coolant bypass hoses
• Prevents coolant leaks that can cause engine overheating
• Restores proper coolant circulation in Chevrolet and GMC trucks and SUVs
• Addresses hose swelling or softening due to age or heat exposure
• Helps maintain engine cooling system integrity

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70785, ensure the hose is routed correctly to avoid kinks or contact with moving parts. Verify that the 5/8 inch inside diameter matches the vehicle’s fittings for a secure connection. Inspect clamps and surrounding components for wear and replace as necessary to prevent leaks. Since this hose does not include a heat shield or protective sleeve, take care to position it away from excessive heat sources to prolong service life.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70785 to meet SAE specifications, ensuring consistent quality and durability. The EPDM material provides resistance to heat and coolant chemicals, contributing to long-term reliability. Warranty details are subject to Dayco’s standard policies; please refer to official documentation for specific coverage information.