Gates 19166 HVAC Heater Hose - Pipe-2 To Heater

Gates Molded Heater Hose for Toyota Cooling Systems

The Gates Molded Heater Hose, part number 19166, is a factory-molded EPDM coolant hose built for tight engine bays and OE-style routing. It is sized for 16 mm (0.63 in) connections with a 15.1 in (384 mm) centerline length, making it a direct replacement style hose for select Toyota heater and coolant applications.

Key Features

• Factory-molded design for precise hose routing in compact engine compartments
• EPDM construction for coolant, water, and air service
• 16 mm (0.63 in) inside diameter at both ends
• 15.1 in (384 mm) centerline length
• Approved for marine applications
• OE-style molded replacement hose from Gates

Product Details

Gates Molded Heater Hose 19166 is part of the Molded Heater Hose line, which focuses on shaped coolant hoses that follow original equipment routing in modern vehicles with tighter packaging. This hose is molded to maintain fit and alignment in the heater circuit, helping preserve proper coolant flow where a straight hose would not match the factory path. It is a practical replacement for Toyota Sequoia and Toyota Tundra heater hose service, including Pipe-2 To Heater applications. This part cross-references Davico Mfg 19166 for the same application.

Common Problems This Hose Can Address

• Cracked or leaking heater hose connections
• Collapsed or softened coolant hose sections
• Improper hose routing after repair
• Restricted heater coolant flow from a damaged hose
• Fitment issues in tight engine compartments

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length before installation. This hose is listed for Fits 2001-2007 Toyota Sequoia, Pipe-2 To Heater and Fits 2000-2006 Toyota Tundra, Pipe-2 To Heater. Confirm the routing matches the original molded shape before transferring clamps or connecting to the heater circuit. For Toyota Sequoia and Toyota Tundra repairs, compare the old hose to the new hose to ensure the molded bends align with the factory layout.

Quality Assurance

Gates manufactures this molded heater hose using EPDM material and OE-style construction for coolant system service. The molded design and application-specific dimensions support consistent replacement fitment for select Toyota heater hose applications.