Gates 19049 HVAC Heater Hose - Heater To Adapter, Heater To Pipe-1 or Pipe To Engine

Gates Molded Heater Hose 19049 Overview

The Gates 19049 molded heater hose is an OEM-style coolant hose built for tight engine bays where a straight hose will not route cleanly. It is formed to match factory-style bends and is suitable for coolant, water, and air service, with marine application approval.

Built from EPDM, this molded heater hose is sized with a 0.6 in. (15 mm) end I.D. and a 0.72 in. (18 mm) end I.D., with a 16.9 in. (429 mm) centerline length. The Gates Molded Heater Hose line focuses on factory-shaped routing for vehicles that need precise hose geometry in compact HVAC and cooling layouts.

Key Features

• Gates part number 19049 molded heater hose
• Factory-molded, OE-style shape for tighter engine compartments
• EPDM construction for coolant, water, and air service
• End 1 inside diameter: 0.6 in. (15 mm)
• End 2 inside diameter: 0.72 in. (18 mm)
• Centerline length: 16.9 in. (429 mm)
• Approved for marine applications
• Compatible with HVAC heater hose routing where molded geometry is required

Detailed Description

The Gates 19049 is a molded HVAC heater hose designed for direct routing in applications that use a factory-formed hose path. Its molded profile helps maintain proper hose alignment in compact engine compartments, while the EPDM material supports coolant transfer in heater and cooling circuits. This part is listed for multiple vehicle applications, including Mazda Miata, Pontiac Grand Am, and Chevrolet Malibu, along with other fitments such as Oldsmobile Alero, Isuzu Rodeo, and Honda Passport. For buyers searching for a molded heater hose for Mazda Miata or a Gates 19049 heater hose for Chevrolet Malibu, this OE-style hose matches the type of routing used in those systems.

This part cross-references Dayco (e.g., 87730, 87763) for the same application.

Common Uses

• Replacing a cracked or leaking molded heater hose
• Restoring heater circuit flow in a vehicle with factory-shaped hose routing
• Addressing coolant seepage at a hose bend or formed section
• Replacing a hose that no longer holds its original molded shape
• Servicing HVAC heater hose connections on compatible Mazda Miata, Pontiac Grand Am, and Chevrolet Malibu applications

Installation Notes and Tips

Verify end diameters, centerline length, and routing before installation to confirm the hose follows the original path without kinking. Check the connection points for corrosion, scale, or hardened residue before attaching the new hose. Because this is a molded hose, correct orientation matters for proper fit in tight spaces. Confirm the vehicle application against the listed fitment, including positions such as Heater To Pipe-1, Heater To Adapter, and Pipe To Engine.

Quality Assurance

Gates Molded Heater Hose products are built to OE-style dimensions and formed for factory-type routing in compact engine compartments. The EPDM construction and molded design support consistent fitment across the listed applications, including 1999-2005 Mazda Miata, 1997-2003 Chevrolet Malibu, and 1999-2005 Pontiac Grand Am.