Gates 18440 HVAC Heater Hose - Heater To Valve, Heater To Valve-1 or Oil Cooler To Engine

Gates 18440 Molded Heater Hose Overview

The Gates 18440 Molded Heater Hose is a factory-molded, OEM-style coolant hose built for tight engine bays and small-diameter routing. Made from EPDM, it is suitable for coolant, water, and air service, and it is also approved for marine applications.

Use this molded Gates heater hose when you need a direct-fit style replacement for select Toyota Tundra and Honda Accord applications. The 18440 part number is engineered for consistent routing where a straight hose will not match the original path.

Key Features

• Gates Molded Heater Hose, part number 18440
• EPDM construction for coolant, water, and air applications
• Factory-molded shape for compact engine compartments
• OEM-style routing for cleaner hose alignment
• Approved for marine applications
• End I.D.: 0.5 in. / 13 mm
• Centerline length: 12.2 in. / 310 mm

Detailed Description

The Gates Molded Heater Hose line is built for vehicles that require a formed hose to follow the original coolant path without excess stress or kinking. This 18440 hose uses EPDM material and a molded profile to support reliable routing in smaller, tighter-fitting engine compartments. It is a practical replacement for heater and coolant transfer points where the hose must maintain a specific bend and length.

Compatible With 2000-2002 Toyota Tundra, Oil Cooler To Engine; 1985 Honda Accord, Heater To Valve; and 1984 Honda Accord, Heater To Valve-1. The Gates 18440 is also a fitment-based choice for drivers searching for a molded heater hose for Toyota Tundra oil cooler to engine routing or Honda Accord heater to valve replacement.

This part cross-references Continental 63530 for the same application.

What It Helps Fix

• Coolant hose routing that no longer matches the original molded shape
• Cracked or deteriorated heater hose sections
• Restricted flow caused by collapsed or kinked hose bends
• Leak points at formed hose runs in tight engine compartments
• Replacement needs for heater, coolant, water, or air hose service

Installation Notes and Tips

Verify hose routing, end diameter, and centerline length before installation. Confirm the molded shape matches the original path on the vehicle, especially on 2000-2002 Toyota Tundra oil cooler to engine routing and 1984-1985 Honda Accord heater-to-valve applications. Inspect adjoining fittings, clamps, and connection surfaces for wear before installing the new hose.

Quality Assurance

Gates manufactures this molded hose as an OEM-style replacement built to support factory-style fitment and routing. The EPDM construction and molded design reflect the product line’s focus on formed coolant hose applications for automotive and marine service.