Dayco 71030 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71030

The Dayco Curved Radiator Hose 71030 is designed to provide reliable coolant flow for a range of GM vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a secure fit and long-lasting performance in Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models.

• Constructed from high-quality EPDM for heat and chemical resistance
• Dual inside diameters: 1 1/4 inch and 1 9/16 inch ends
• Black color for standard OEM appearance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 22 inches for precise fitment

Detailed Product Description

The Dayco Curved Radiator Hose 71030 is a dual inside diameter hose designed to replace original equipment on select GM vehicles. Made from EPDM (ethylene propylene diene monomer), this hose offers excellent resistance to heat, ozone, and coolant chemicals, making it suitable for radiator coolant systems. The hose features a curved design to accommodate specific engine bay layouts and has a trunk height of 22 inches, ensuring proper routing without kinks or stress. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive coolant applications.

The Curved Radiator Hose product line from Dayco focuses on providing precise fitment and durability for radiator coolant hoses that require specific bends and dual inside diameters. This hose line supports a variety of GM vehicles, ensuring compatibility and reliable coolant flow under demanding conditions.

Compatible Vehicles and Applications

• Buick models including Century, LeSabre, Regal, and Riviera
• Chevrolet trucks and SUVs such as C10, C10 Suburban, C1500, C1500 Suburban, and C2500 Suburban
• GMC trucks and SUVs including C1500 Suburban and C2500 Suburban
• Oldsmobile models like Cutlass, Cutlass Calais, Cutlass Cruiser, Cutlass Salon, Cutlass Supreme, Delta 88, and 98
• Pontiac models including Bonneville, Catalina, Grand LeMans, Grand Prix, and Safari

Common Issues Addressed by This Radiator Hose

• Coolant leaks caused by cracked or worn radiator hoses
• Overheating due to restricted or collapsed hoses
• Improper fitment from incorrect hose diameter or length
• Premature hose failure from exposure to heat and chemicals
• Coolant system pressure loss affecting engine temperature regulation

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to prevent burns. Verify the hose ends match the required inside diameters of 1 1/4 inch and 1 9/16 inch for proper sealing. Inspect hose clamps and replace if necessary to maintain secure connections. Route the hose carefully to avoid contact with moving parts or sharp edges. After installation, refill the coolant system and check for leaks during engine warm-up.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71030 to meet stringent SAE specifications, including J20R4 Class D-1 and J1684 Type EC, ensuring durability and performance. The EPDM material provides resistance to heat, ozone, and coolant chemicals, contributing to extended service life. Warranty details should be confirmed with the original equipment manufacturer or supplier.