Gates 18255 HVAC Heater Hose - Pipe-1 To Throttle Body or Reservoir To Engine

Gates Molded Heater Hose 18255 Overview

The Gates 18255 molded heater hose is an OEM-style coolant hose formed for tighter engine compartments where a straight hose will not route correctly. Built from EPDM, it is made for coolant, water, and air service, and it is also approved for marine applications.

For drivers searching for a molded heater hose for a 2001-2005 Saturn L300 or a 2001-2004 Subaru Outback, this hose follows the factory-style shape needed for the reservoir-to-engine and pipe-to-throttle-body routing shown in the fitment data.

Key Features

• Gates Molded Heater Hose product line for factory-style routing
• Part number 18255
• EPDM construction for coolant, water, and air applications
• Factory-molded shape for compact engine bays
• End inside diameter: 7 mm (.29 in) at both ends
• Centerline length: 572 mm (22.5 in)
• Approved for marine applications

Product Details

The Gates 18255 heater hose is built to match the shape and routing demands of modern engine compartments. Its molded design helps maintain proper hose alignment in applications where a formed hose is required, including Saturn L300, Saturn LW300, Saturn LS2, Saturn LW2, and Subaru Outback fitments listed below. This part cross-references Bosch 18255 for the same application.

Use this molded coolant hose when replacing a worn, cracked, or incorrectly routed hose in a vehicle that needs an OEM-style formed profile. The Gates molded heater hose line is intended for direct-fit routing where the hose must follow the original path between components.

What It Helps Address

• Coolant leaks from a cracked or deteriorated molded hose
• Improper hose routing in tight engine compartments
• Heat-related hose hardening or splitting
• Loss of heater circuit flow caused by a damaged hose
• Fitment issues when a straight hose cannot follow the factory path

Installation Notes

Verify the hose routing, end diameters, and centerline length before installation. Confirm the vehicle application against the listed fitment for Saturn L300, Saturn LW300, Saturn LS2, Saturn LW2, and Subaru Outback models. Inspect adjoining pipes, clamps, and connection points for wear or corrosion before installing the new hose.

For best results, compare the original hose shape to the molded profile of Gates 18255 before removal. Proper routing is important on reservoir-to-engine and pipe-to-throttle-body applications to maintain clearance and alignment.

Quality Assurance

Gates manufactures this molded heater hose as an OEM-style replacement part with EPDM material and factory-molded construction. The design supports consistent fitment for the listed applications and follows the routing requirements common to compact engine bay cooling and heater hose service.