Gates 19798 HVAC Heater Hose - Tee-9 To Tee-8

Gates Molded Heater Hose 19798

Gates 19798 is a factory-molded, OEM-style heater hose built for tight engine compartments where a straight hose will not route correctly. Made from EPDM, it is shaped for consistent fitment and is suitable for coolant, water, and air service, with marine application approval.

Key Features

• Factory-molded design for precise routing in compact engine bays
• EPDM construction for heater and coolant system service
• Small I.D. molded hose for tight-fitting applications
• Approved for coolant, water, air, and marine use
• Centerline length: 17.8 in. (452 mm)
• End 1 inside diameter: 0.76 in. (19 mm)
• End 2 inside diameter: 0.96 in. (24 mm)

Product Details

This Gates Molded Heater Hose line is built around OEM-style routing and formed bends, making it a practical choice for vehicles with limited clearance around the engine. Part number 19798 is a molded EPDM hose with a 17.8-inch centerline length and stepped inside diameters that support heater and coolant connections where a formed hose is required. It is a direct-fit style replacement for select 1999-2003 Volkswagen Golf and 1999-2003 Volkswagen Jetta heater hose applications at the Tee-9 to Tee-8 position. This part cross-references 1J0122101AR and 11798 for the same application.

Common Problems It Can Address

• Cracked or hardened heater hose material
• Coolant seepage at a worn molded hose section
• Poor hose routing in tight engine compartments
• Incorrect fit from a universal straight hose
• Heat-related hose deformation near the heater circuit

Installation Notes and Tips

Verify the Tee-9 to Tee-8 routing before installation and compare the hose shape, centerline length, and end diameters to the original part. Inspect adjoining fittings and clamps for wear, and confirm the hose is seated without twist or kinks after installation. For Volkswagen Golf and Volkswagen Jetta heater hose replacement, matching the molded shape is important for proper clearance and flow.

Quality Assurance

Gates is known for OE-style fluid transfer components, and this molded heater hose is built to the same routing-focused standard used in factory-style replacement parts. Part number 19798 is engineered for consistent fit and service in the listed applications.