Gates 19803 HVAC Heater Hose - Auxiliary Water Pump Inlet or Valve To Heater

Overview of Gates Molded Heater Hose 19803

The Gates Molded Heater Hose 19803 is designed for reliable HVAC system performance in select Infiniti and Saturn vehicles. Engineered with durable EPDM material, this molded heater hose ensures consistent heat transfer and long-lasting service in your vehicle's heating system.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure connections
• Centerline length of 11.5 inches (292 mm) for accurate replacement
• Inside diameter of 0.77 inches (20 mm) on both ends
• Compatible with Infiniti L300, LS2, LW2, LW300, QX56 and Saturn models

Detailed Product Description

The Gates Molded Heater Hose 19803 is part of the Molded Heater Hose product line, which focuses on delivering pre-formed hoses that match original equipment specifications. This hose is molded to exact dimensions, including a centerline length of 11.5 inches (292 mm) and an inside diameter of 0.77 inches (20 mm) on both ends, ensuring a precise fit without the need for modifications. Made from EPDM, the hose offers resistance to heat, ozone, and automotive fluids, making it suitable for HVAC heater core connections in your Infiniti or Saturn vehicle. The molded construction eliminates the risk of kinks and leaks, providing reliable coolant flow and maintaining optimal cabin heating performance.

Compatible Vehicles and Applications

This HVAC heater hose is compatible with the following makes and models:

• Infiniti L300, LS2, LW2, LW300, QX56
• Saturn models requiring a 0.77 inch (20 mm) heater hose with an 11.5 inch (292 mm) centerline length

It is designed to replace worn or damaged heater hoses that cause issues such as coolant leaks, poor heater performance, or overheating in the HVAC system.

Common Issues Addressed by Part Number 19803

• Heater core coolant leaks due to cracked or brittle hoses
• Reduced cabin heating efficiency from restricted coolant flow
• Overheating caused by compromised heater hose integrity
• Hose deformation or kinking affecting coolant circulation
• Premature hose failure from exposure to heat and chemicals

Installation Notes and Tips

When installing the Gates Molded Heater Hose 19803, ensure the vehicle is cool and the cooling system is depressurized. Verify the hose orientation matches the molded shape to avoid kinks. Use proper clamps to secure both ends and check for leaks after installation. This hose does not include quick connect fittings, so ensure compatibility with existing hardware on your Infiniti or Saturn model.

Quality Assurance and Warranty

Gates manufactures the Molded Heater Hose 19803 to meet or exceed OEM specifications, using EPDM material for durability and resistance to automotive fluids and heat. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in material and workmanship. For precise warranty information, refer to Gates documentation or your parts supplier.