Gates 19363 HVAC Heater Hose - Heater (Upper)

Overview of Gates Molded Heater Hose 19363

The Gates Molded Heater Hose 19363 is designed specifically for HVAC systems in select Lexus and Toyota vehicles. Engineered with durable EPDM material, this molded heater hose ensures reliable performance and precise fitment for models like the Lexus GX470 and Toyota 4Runner.

• Constructed from high-quality EPDM rubber for heat and chemical resistance
• Molded design for exact fit and easy installation
• Centerline length of 14.5 inches (368 mm) for accurate replacement
• Consistent inside diameter of 0.63 inches (16 mm) on both ends
• Compatible with Lexus GX470 and Toyota 4Runner HVAC systems

Detailed Product Description

This HVAC heater hose from Gates, part number 19363, is part of the Molded Heater Hose product line, which focuses on precision-molded components tailored to specific vehicle applications. The molded construction eliminates the need for bending or cutting, providing a direct replacement that maintains the integrity of the heating system. Made from EPDM, the hose resists heat, ozone, and coolant chemicals, ensuring durability and long service life under demanding engine compartment conditions.

Applications and Common Issues Addressed

• Replacement of cracked or leaking heater hoses in Lexus GX470 and Toyota 4Runner models
• Restoring proper coolant flow to the HVAC heater core
• Preventing coolant leaks that can cause engine overheating
• Eliminating hose collapse or blockage that reduces heater performance
• Maintaining system pressure and preventing air intrusion

Installation Notes and Tips

When installing the Gates Molded Heater Hose 19363, ensure the vehicle is cool and the cooling system is depressurized. The molded design allows for straightforward installation without modification. Verify the hose orientation matches the original to maintain proper coolant flow. Inspect hose clamps and replace if necessary to ensure a secure seal.

Quality Assurance and Warranty

Gates Molded Heater Hose 19363 is manufactured to meet or exceed OEM specifications for fit, form, and function. The EPDM material and molded construction provide reliable performance in HVAC applications. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in material and workmanship.