Gates 19779 HVAC Heater Hose - Auxiliary Water Pump Outlet, Tee-1 To Intake Manifold or Tee-2 To Intake Manifold

Reliable HVAC Heater Hose for Audi and Cadillac Models

The Gates Molded Heater Hose 19779 is engineered to provide dependable heating system performance for select Audi and Cadillac vehicles. Designed with durable EPDM material, this molded heater hose ensures a precise fit and long-lasting service in your HVAC system.

Key Features of Gates Molded Heater Hose 19779

• Constructed from high-quality EPDM for heat and chemical resistance
• Molded design for exact fit and leak prevention
• End 1 inside diameter: 0.74 inches (19 mm)
• End 2 inside diameter: 0.99 inches (25 mm)
• Centerline length: 12.7 inches (323 mm)
• Compatible with Audi A6 Quattro, RS4, S4 and Cadillac DeVille, Eldorado, Seville

About the Gates Molded Heater Hose Product Line

The Molded Heater Hose line by Gates focuses on precision-engineered hoses that are molded to exact specifications for specific vehicle applications. This approach reduces the risk of leaks and ensures optimal flow within the HVAC system. The 19779 part number is part of this line, offering a tailored solution for Audi and Cadillac models requiring reliable heater hose replacement.

Detailed Product Description

This HVAC heater hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. The molded construction provides a secure, leak-resistant connection between the heater core and the engine cooling system. With a centerline length of 12.7 inches (323 mm), and differing inside diameters on each end (0.74 inches/19 mm and 0.99 inches/25 mm), this hose is designed to match the specific routing and connection points in compatible Audi and Cadillac vehicles. The absence of quick connect fittings and branches simplifies installation and reduces potential failure points.

Common Applications and Issues Addressed

• Replacement of cracked or leaking heater hoses in Audi A6 Quattro, RS4, S4
• Restoring proper coolant flow in Cadillac DeVille, Eldorado, Seville heating systems
• Preventing coolant leaks that cause HVAC system inefficiency
• Eliminating overheating issues related to faulty heater hoses
• Maintaining consistent cabin heating performance

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns from hot coolant. Verify hose routing matches the original to prevent kinks or interference with other engine components. Use appropriate clamps to secure the hose ends firmly. Inspect surrounding components for wear or damage during replacement to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Gates Molded Heater Hose 19779 is manufactured to meet or exceed OEM specifications for durability and performance. The EPDM material and molded design contribute to long service life under normal operating conditions. Please refer to Gates' official warranty policy for specific coverage details.