Gates 19793 HVAC Heater Hose - Heater To Pipe-1

Gates Molded Heater Hose 19793

The Gates 19793 molded heater hose is an OEM-style coolant hose built for tight engine compartments where a straight hose will not route correctly. It is formed to match factory-style bends and is suitable for coolant, water, and air applications, with marine application approval.

Key Features

• Factory-molded design for accurate routing in compact engine bays
• EPDM construction for heater and coolant service
• End I.D. at both ends: 19 mm (0.76 in.)
• Centerline length: 447 mm (17.6 in.)
• Fits heater-to-pipe applications on Audi A4, Audi A4 Quattro, and Volkswagen Passat
• Gates Molded Heater Hose line for OE-style replacement fitment

Product Details

Built as a molded heater hose, this Gates 19793 part follows the shape needed for heater-to-pipe routing in vehicles with limited clearance. The EPDM material supports coolant transfer in heating and cooling circuits, while the molded profile helps maintain the correct path around nearby components. This hose is a direct fit for 1997-2002 Audi A4, 1997-2002 Audi A4 Quattro, and 1998-2005 Volkswagen Passat heater-to-pipe-1 applications. This part cross-references Rein CHH0354 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened heater hose material
• Coolant leaks at a molded hose section
• Poor routing caused by a straight replacement hose
• Restricted heater circuit flow from a damaged hose
• Fitment issues in tight engine compartments

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length before installation. Compare the original hose shape to the molded profile to confirm correct alignment at the heater-to-pipe connection. Inspect adjoining pipes, clamps, and sealing surfaces for wear or corrosion before installing the replacement hose.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement part for factory-type fitment and routing. The design supports coolant, water, and air service and is approved for marine applications.