Gates 19594 HVAC Heater Hose - Engine To Tee or Heater Outlet

Overview of Gates Molded Heater Hose 19594

The Gates Molded Heater Hose 19594 is designed for reliable HVAC system performance in select Chevrolet and Lexus vehicles. Engineered with durable EPDM material, this molded heater hose ensures consistent heat transfer and long-lasting service in models like the Chevrolet Bolt EV and Lexus GS350.

• Constructed from high-quality EPDM for heat and chemical resistance
• Molded design for precise fit and easy installation
• End 1 inside diameter: 0.62 inches (16 mm)
• End 2 inside diameter: 0.72 inches (18 mm)
• Centerline length: 16.6 inches (422 mm)
• No quick connect fittings or branches, simplifying HVAC hose routing

Detailed Product Description

The Gates Molded Heater Hose 19594 is part of the Molded Heater Hose product line, which focuses on delivering pre-formed hoses that match OEM specifications for HVAC systems. This hose is molded to exact dimensions, including a centerline length of 16.6 inches (422 mm), ensuring a precise fit in the heater core circuit. The EPDM material offers excellent resistance to heat, ozone, and coolant chemicals, making it suitable for the demanding environment of automotive heating systems. The hose features two different inside diameters—0.62 inches (16 mm) on one end and 0.72 inches (18 mm) on the other—to accommodate specific connection points within the HVAC system of Chevrolet Bolt EV and Lexus GS350, IS250, IS300, IS350, and RC350 models.

Applications and Common Issues Addressed

• Replacement of cracked or leaking heater hoses in Chevrolet Bolt EV and Lexus GS series vehicles
• Resolving coolant leaks that cause HVAC system inefficiency
• Addressing hose deformation or swelling due to heat exposure
• Preventing heater core overheating by maintaining proper coolant flow
• Eliminating rattling or misfit issues caused by non-molded hoses

Installation Notes and Tips

• Ensure the vehicle is cool and the cooling system is depressurized before installation
• Verify hose orientation matches the molded shape for proper fit
• Use appropriate clamps to secure hose ends without over-tightening
• Inspect adjacent components for wear or damage during replacement
• Flush the cooling system if contamination or debris is present

Quality Assurance and Warranty

Gates Molded Heater Hose 19594 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM construction provides resistance to heat, ozone, and coolant chemicals, contributing to extended service life. While specific warranty details are subject to the original equipment manufacturer and distributor policies, Gates products typically come with a limited warranty against defects in material and workmanship.