Gates 19373 HVAC Heater Hose - Pipe-2 To Water Pump

Gates 19373 Molded Heater Hose Overview

The Gates 19373 molded heater hose is an OEM-style coolant hose built for tight engine bays where a straight hose will not route correctly. It is formed to match factory routing and is suitable for coolant, water, and air service, with marine application approval.

Gates Molded Heater Hose products focus on factory-shaped routing and reliable fitment in compact engine compartments. This small I.D. molded coolant hose follows that product line approach for vehicles that need a precise formed hose rather than a universal cut-to-fit length.

Key Features

• EPDM construction for coolant hose service
• Factory-molded shape for OEM-style routing
• End 1 inside diameter: 0.62 in. (16 mm)
• End 2 inside diameter: 0.62 in. (16 mm)
• Centerline length: 18.6 in. (472 mm)
• Approved for coolant, water, air, and marine applications
• Direct replacement style for compact engine compartments

Application Details

This Gates 19373 hose is a molded heater hose for the pipe-2 to water pump position. It is listed for 2004-2011 Ford Ranger, 2004-2010 Mazda B4000, 2004-2005 Ford Explorer, 2003-2005 Ford Explorer Sport Trac, and 2003 Ford Explorer Sport. This part cross-references Continental 64673 and Dayco 87734 for the same application.

What It Helps Address

• Coolant leaks caused by cracked or aged heater hose rubber
• Poor hose routing in tight engine compartments
• Incorrect fit from universal hose bends
• Restricted coolant flow from collapsed or softened hose sections
• Service issues on Ford Ranger and Mazda B4000 heater hose routing

Installation Notes and Tips

Verify hose routing against the original formed hose before installation. Confirm the 0.62 in. inside diameter and 18.6 in. centerline length match the vehicle’s pipe-2 to water pump layout. Inspect adjoining fittings, clamps, and coolant passages for wear or corrosion before reassembly.

Quality Assurance

Gates manufactures this molded hose as an OE-style replacement built to factory-shaped dimensions for proper routing in smaller engine compartments. The EPDM material and molded construction support consistent fitment for the listed Ford and Mazda applications.