Gates 19751 HVAC Heater Hose - Heater To Tee-2

Gates Molded Heater Hose for Tight Engine Bays

The Gates 19751 molded heater hose is an OEM-style coolant hose built for compact engine compartments where a straight hose will not route correctly. It is formed from EPDM and sized with 3/4 in. inside diameter ends to support coolant, water, and air transfer in the heater circuit.

Compatible With 1996-2000 Nissan Pathfinder and 1997-2000 INFINITI QX4 heater-to-tee-2 applications, this molded hose follows the factory routing used in these vehicles. The Gates Molded Heater Hose line focuses on shaped replacement hoses for modern underhood layouts, and part number 19751 is part of that OE-style approach.

Key Features

• Factory-molded replacement hose for heater circuit routing
• EPDM construction for coolant, water, and air applications
• 3/4 in. inside diameter at both ends
• 16.5 in. centerline length for shaped fitment
• Approved for marine applications
• OE-style form factor for tighter engine compartments

Detailed Product Overview

Gates 19751 is a molded heater hose designed to match the routing needs of the Nissan Pathfinder and INFINITI QX4 heater-to-tee-2 connection. Its molded shape helps maintain the correct path through crowded engine bays, while the EPDM material is selected for use in coolant and related fluid or air transfer applications. If you are replacing a worn or damaged heater hose on a 1996-2000 Nissan Pathfinder or a 1997-2000 INFINITI QX4, this part number 19751 provides the correct molded configuration for those listed applications.

This part cross-references Continental 64372 for the same application.

Common Problems This Hose Can Address

• Cracked or deteriorated heater hose material
• Incorrect hose routing in a tight engine compartment
• Coolant leaks at a molded heater hose section
• Heat-related hose deformation near the heater circuit
• Replacement needs for the heater-to-tee-2 hose path on Pathfinder and QX4 models

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length before installation. This molded hose is listed for heater-to-tee-2 routing on the specified Nissan Pathfinder and INFINITI QX4 applications, and a protective sleeve is required for the listed fitments. Inspect adjoining clamps, tees, and nearby connections for wear before installing the new hose.

Quality Assurance

Gates manufactures molded coolant hoses to OE-style specifications for proper routing and fit in compact engine bays. Part number 19751 is built as a molded replacement hose for the listed vehicle applications and uses EPDM construction for demanding underhood service.