Gates 18261 HVAC Heater Hose - Reservoir To Thermostat

Gates 18261 Molded Heater Hose Overview

The Gates 18261 molded heater hose is an OEM-style coolant hose built for tight engine bays where a formed routing path matters. It is made from EPDM and is approved for coolant, water, air, and marine applications.

Compatible with 2000-2003 Ford Focus reservoir to thermostat routing, this molded hose supports the factory-style path needed in compact HVAC and cooling layouts. The Gates Molded Heater Hose line is built for applications that require a precise bend and small inside diameter fitment.

Key Features

• Factory-molded, OE-style shape for accurate routing
• EPDM construction for coolant, water, and air service
• Small inside diameter design for tighter engine compartments
• Approved for marine applications
• Part number 18261 for easy identification

Detailed Product Description

Gates 18261 is a molded heater hose designed to follow the original reservoir-to-thermostat path on 2000-2003 Ford Focus models. The formed construction helps maintain the correct hose shape in confined spaces, which is important in modern engine compartments where straight hose sections can create routing issues. With EPDM material and a small I.D. profile, this hose is suited for coolant transfer and related fluid or air routing where an OEM-style molded replacement is required. This part cross-references Four Seasons 64129 for the same application.

Common Problems This Hose Can Address

• Cracked or leaking heater hose at the reservoir-to-thermostat route
• Collapsed or softened hose from heat and coolant exposure
• Poor hose routing in a tight engine compartment
• Loss of coolant flow through a damaged molded hose section
• Replacement needs on 2000-2003 Ford Focus cooling and HVAC hose routing

Installation Notes and Tips

Verify the reservoir-to-thermostat routing before installation and compare the molded shape to the original hose. Inspect adjoining clamps, fittings, and nearby coolant components for wear or corrosion before reassembly. Confirm the hose is seated fully and routed without twist or contact against hot or moving parts.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement for applications that require a formed fit and durable EPDM construction. The Gates Molded Heater Hose line is intended to match factory routing needs in compact engine compartments.