Gates 19817 HVAC Heater Hose - Heater To Thermostat

Gates Molded Heater Hose for Saturn L-Series

The Gates 19817 molded heater hose is an OEM-style coolant hose built for tight engine bays and factory routing. It is shaped to match the heater-to-thermostat path on select Saturn L-Series models, helping maintain proper coolant flow in a compact fitment.

Made from EPDM and factory-molded for consistent routing, this Gates Molded Heater Hose is also approved for coolant, water, air, and marine applications. For Saturn L300, Saturn L200, and related L-Series vehicles, the 19817 provides a direct replacement format that follows the original hose path.

Key Features

• Gates Molded Heater Hose, part number 19817
• OEM-style molded construction for tight engine compartments
• EPDM material for coolant hose service
• 19 mm (0.76 in) inside diameter at both ends
• 15.2 in (386 mm) centerline length
• Factory-shaped for heater-to-thermostat routing
• Approved for coolant, water, air, and marine applications

Product Details

The Gates Molded Heater Hose line focuses on factory-molded replacement hoses that follow original equipment routing in smaller, tighter engine compartments. Part number 19817 is a molded EPDM hose with equal 19 mm end diameters and a 15.2-inch centerline length, making it a direct-format replacement for the specified Saturn heater-to-thermostat application. This part cross-references Dayco 88475 for the same application.

Common Problems This Hose Can Address

• Coolant leaks from a cracked or aged heater hose
• Restricted coolant circulation between the heater circuit and thermostat
• Improper hose routing after a previous repair
• Heat-related hose deterioration in the engine bay
• Fitment issues caused by a straight hose where a molded hose is required

Installation Notes and Tips

• Verify the hose route and end diameters before installation.
• Inspect adjoining clamps, thermostat housing, and heater connections for wear or corrosion.
• Confirm the hose follows the original molded path to avoid kinks or tension.
• Drain coolant as needed before removing the existing hose.

Quality Assurance

Gates is known for OE-style fluid transfer components, and this molded heater hose is built to match factory routing requirements for the listed Saturn applications. Compatible With 2004 Saturn L300, Heater To Thermostat; 2001-2003 Saturn L200, Heater To Thermostat; 2001-2003 Saturn LW200, Heater To Thermostat; 2001-2002 Saturn L100, Heater To Thermostat; 2000 Saturn LS, Heater To Thermostat; 2000 Saturn LS1, Heater To Thermostat; 2000 Saturn LW1, Heater To Thermostat.